Publications by authors named "Ahmed Jahid"

34 Publications

Concurrent Angiomyolipoma and Clear Cell Renal Cell Carcinoma in the Same Kidney: A Rare Finding in a Patient without Tuberous Sclerosis.

Case Rep Urol 2021 1;2021:6663369. Epub 2021 Sep 1.

Department of Pathology, Ibn Sina University Hospital Center, Rabat, Morocco.

Synchronous renal cell carcinomas (RCC) and angiomyolipomas (AML) occurring in the same kidney are rare. Cases in the setting of tuberous sclerosis (TS) have been reported in the literature. However, the association of these tumors in the same kidney without TS is even more rare. We report here a case of a clear cell renal cell carcinoma (CCRCC) associated with an AML in the same kidney in a 42 years old female lacking the TS diagnostic criteria. The patient underwent a radical nephrectomy. Six months after surgery, the patient is healthy without signs of tumor recurrence or distant metastasis.
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http://dx.doi.org/10.1155/2021/6663369DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8426085PMC
September 2021

Cystic mass of the right iliac fossa: don't forget about lymphatic malformation.

BJR Case Rep 2021 May 22;7(3):20200165. Epub 2020 Dec 22.

Department of Radiology, University Hospital Center IBN SINA, Mohammed V-Souissi University, Rabat, Morocco.

Lymphatic malformation or cystic lymphangioma is a benign tumour of the lymphatic vessels. It is more commonly reported among children and has polymorphic clinical presentations. The diagnosis is based on imaging but requires histological confirmation. The treatment of choice is surgical excision for the abdominal and symptomatic localization. We report the case of a 30-year-old female who consulted for right iliac fossa pain mimicking an acute appendicitis. The physical examination revealed a slight tenderness in the right iliac fossa without fever or palpable mass. Though the biological screening was normal, the imaging exploration has revealed the presence of a multiloculated cyst located in the right iliac fossa at the ascending colon and measuring 15 cm. The mass matches with lymphatic malformation. Therefore, a laparoscopy was performed, and complete resection of the cystic tumor was accomplished with right hemicolectomy. The histologic exam has confirmed the diagnosis. Colonic lymphatic malformation is a rare and benign tumour, requiring a complete surgical excision to minimise any recidivism. The definitive diagnosis remains histological.
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http://dx.doi.org/10.1259/bjrcr.20200165DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8171127PMC
May 2021

Leiomyosarcoma of the Renal Vein Mimicking a Primitive Renal Cell Carcinoma: Case Report of an Unusual Presentation.

Case Rep Pathol 2021 12;2021:6637533. Epub 2021 May 12.

Department of Pathology, Ibn Sina University Hospital Center, Rabat, Morocco.

Primary leiomyosarcomas (LMS) of vascular origin are rare tumors, and more than half of the cases arise in the inferior vena cava (IVC). Primary LMS of the renal vein are extremely rare tumors with only a few cases reported in the literature. Their diagnosis is made only by pathological features. Histologically, they are made of atypical spindle-shaped cells arranged in long intersecting fascicles. Tumor cells stain positive for myogenic markers in immunohistochemistry. Standard treatment consists of radical nephrectomy followed by chemotherapy and/or radiotherapy. Because of insufficient histological data and follow-up, the prognosis factors are not well identified. Overall prognosis of renal vein LMS is poor. We report here an exceptional case of a huge LMS of the right renal vein mimicking a primitive renal cell carcinoma, occurring in a 56-year-old male patient.
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http://dx.doi.org/10.1155/2021/6637533DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8133846PMC
May 2021

Primary Hodgkin lymphoma of the ulnar nerve: the first case report with review of the literature.

J Surg Case Rep 2021 May 20;2021(5):rjab185. Epub 2021 May 20.

Department of Pathology, Ibn Sina Teaching Hospital, Abderrahim Bouabid Avenue, Rabat 12000, Morocco.

Hodgkin lymphoma is a lymphoid malignancy characterized by minority population of neoplastic cells (Reed-Sternberg cells and its variants) within a reactive inflammatory background. It encompasses two entities: classical HL (∼95% of cases) and nodular lymphocyte predominant HL (∼5% of cases). Primary lymphoma of peripheral nerves (PLPN) represent a very rare condition, since only 19 cases have been reported in the English literature to date, all of which are of a non-HL phenotype. A 20-year-old female presented an intramural mass of the ulnar nerve. Histological analysis revealed a Classical Hodgkin lymphoma. Further investigations failed to reveal nodal or extranodal involvement. PLPN is a very rare entity. There is a need for further understanding of this unusual lymphoma presentation.
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http://dx.doi.org/10.1093/jscr/rjab185DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8136864PMC
May 2021

Retroperitoneal leiomyoma of gynecologic type: a case report and review of the litterature.

J Surg Case Rep 2020 Dec 24;2020(12):rjaa489. Epub 2020 Dec 24.

Department of Pathology, Ibn Sina Teaching Hospital, Rabat, Morocco.

Retroperitoneal leiomyomas are rare benign tumors with smooth muscle differentiation, with only ~1001 cases reported in the English literature to date. Because of its scarcity and non-specific presentation, the preoperative diagnosis might be challenging. On histology, these neoplasms share the same macroscopic, morphological and phenotypic features with uterine leiomyoma; thus, they are referred to as leiomyoma of gynecologic type. Herein, we describe a case of a voluminous retroperitoneal leiomyoma in a 51-year-old woman with a history of total hysterectomy to raise awareness about this condition, as its differential diagnosis might be challenging.
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http://dx.doi.org/10.1093/jscr/rjaa489DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7758995PMC
December 2020

[Recurrence of pseudomyxoma peritonei with liver and splenic metastases: about a case and literature review].

Pan Afr Med J 2018 25;30:225. Epub 2018 Jul 25.

Laboratoire d'Anatomie Pathologique, Centre Hospitalier Universitaire Avicenne, Rabat, Maroc.

Pseudomyxoma peritonei (PMP) is a clinicopathologic syndrome characterized by mucinous ascites and pools of mucin resulting in neoplastic mucinous epithelium in the peritoneal cavity. PMP is uncommon and it is characterized by clinical and unusual pathologic manifestations posing diagnostic and therapeutic problems. Involvement of abdominal viscera and lymph node metastases are rare and sporadic cases have been reported in the literature. We here report the case of a 56-year old patient who had undergone two operations for PMP of appendicular origin presenting with progressive abdominal pain five years after his last treatment. Scanner objectified a recurrence of peritoneal pseudo-myxoma with liver and splenic intraparenchymatous lesions. Anatomopathological examination showed intrasplenic and hepatic recurrence of low-grade peritoneal pseudo-myxoma confirming the metastases.
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http://dx.doi.org/10.11604/pamj.2018.30.225.15484DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6295300PMC
January 2019

[A splenic tendonitis ?]

Presse Med 2019 01 12;48(1 Pt 1):91-94. Epub 2018 Dec 12.

Hôpital Ibn Sina, service d'anatomie pathologique, Rabat, Maroc.

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http://dx.doi.org/10.1016/j.lpm.2018.11.013DOI Listing
January 2019

Lymphoepithelioma-Like Carcinoma of the Bladder: A Case Report of a Rare and Particular Variant of Urothelial Carcinoma.

Case Rep Urol 2018 8;2018:7975454. Epub 2018 Jul 8.

Urology B Department, Ibn Sina Teaching Hospital, Rabat, Morocco.

Lymphoepithelioma-like carcinoma of the bladder (LELCB) is a rare variant of urothelial carcinoma first described by Zukerberg in 1991 and confirmed as a variant of urothelial carcinoma by the WHO classification of tumors of the urinary system. LELCB is characterized by a marked infiltration of lymphocytes in the area involved by the tumor which may coexist with the conventional urothelial carcinoma. LELCB are classified according to the percentage of lymphoepithelioma component within the tumor with the prognosis depending on the percentage. We report a new case of pure LELCB occurring in 63-year-old woman presenting with hematuria. Ultrasonography and cystoscopy revealed a large tumor on the left lateral wall of the bladder. Transurethral resection of the bladder tumor (TURBT) was performed. Pathological and immunohistochemical analysis revealed a high-grade muscle-invasive LELCB (G3pT2). The patient underwent an adjuvant systemic chemotherapy with no recurrence after a ten-month follow-up. To our knowledge, this is the second Moroccan case of LELCB reported in the English literature. Although its rare occurrence prognosis and ideal therapeutic management of LELCB have not been clearly established yet, literature findings encourage the adoption of a conservative approach in treatment of LELCB.
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http://dx.doi.org/10.1155/2018/7975454DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6057318PMC
July 2018

Perineal schwannoma.

BMC Res Notes 2016 Jun 13;9:304. Epub 2016 Jun 13.

Surgery Unit C, Ibn Sina University Hospital, Rabat, Morocco.

Background: Schwannoma is a benign tumor arising from Schwann cells of the peripheral nerve sheath. Perineal schwannomas are exceptional, and rarely reported in the literature. We report a case of a perineal schwannoma, close to the anal sphincter, and provide a short summary of clinical, radiological and surgical features of this rare entity.

Case Presentation: A 62 year-old male patient was admitted for a suspected perineal mass. At clinical examination, he had a soft mass, located on the right of the anus. Computed tomography showed a perineal mass, located on the right side of the anal sphincter that enhanced after injection of the contrast medium. Complete surgical excision of the tumor was performed. The most challenging part during the surgery was the dissection and preservation of the anal sphincter to avoid anal incontinence. Pathologic examination revealed a completely excised schwannoma.

Conclusions: Perineal schwannomas are very rare tumors that are usually asymptomatic, and which present as large masses. Complete excision is necessary to avoid recurrences. Surgical resection may be difficult depending of proximity to the anal sphincter. A cautious dissection in such cases is required in order to reduce the risk of incontinence.
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http://dx.doi.org/10.1186/s13104-016-2108-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4907005PMC
June 2016

Ileocecal resection for massive rectal bleeding due to Yersinia enterocolitica: a case report and review of the literature.

J Med Case Rep 2016 Jan 19;10. Epub 2016 Jan 19.

EFD-Hepatogastroenterology, Ibn Sina Hospital, Rabat, Morocco.

Introduction: Massive gastrointestinal bleeding is an emergency that can sometimes require immediate surgery. We report the first case, to the best of our knowledge, of massive rectal bleeding due to Yersinia enterocolitica, requiring ileocecal resection.

Case Presentation: A 41-year-old North African woman was admitted to our emergency department for massive rectal bleeding. She had a history of an iron deficiency anemia of unknown cause, and diarrhea 2 months before the admission. On admission to our emergency unit, she was in a state of hemodynamic collapse. An examination showed discolored conjunctivas, massive rectal bleeding with clots and no abdominal pain. The first medical treatment included the use of noradrenaline. An upper gastrointestinal endoscopy was performed and did not show any lesions. Computed tomography of her abdomen showed significant and hypervascular wall thickening of her terminal ileum suggestive of a tumor. Because her massive rectal bleeding worsened and her collapse persisted, an exploratory laparotomy and ileocecal resection were immediately performed on the patient. Histopathological analysis showed enteritis caused by Yersinia enterocolitica. Her outcome was favorable.

Conclusion: Enteritis due to Yersinia enterocolitica can take a pseudotumoral form and mislead the diagnosis of gastrointestinal bleeding.
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http://dx.doi.org/10.1186/s13256-015-0786-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4717558PMC
January 2016

[Unusual cause of intussusception in adult].

Ann Pathol 2016 Apr 12;36(2):143-5. Epub 2015 Nov 12.

Service central d'anatomie pathologique, CHU Ibn Sina, Rabat, Maroc; Central Department of Pathology, Ibn Sina university hospital, Rabat, Maroc.

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http://dx.doi.org/10.1016/j.annpat.2015.08.013DOI Listing
April 2016

Synchronous adenomyomas of the ileum in an adult-an exceptional cause of intussusception.

Clin Case Rep 2015 Jul 20;3(7):578-81. Epub 2015 May 20.

Department of Pathology, Ibn Sina University Hospital Rabat, Morocco.

In this article, we report a case of two synchronous ileal adenomyomas leading to intussusception. This rare occurrence has never been reported in the literature. Our case is noteworthy, because the lesion is rare and should be considered in the differential diagnosis of intussusception in adults.
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http://dx.doi.org/10.1002/ccr3.290DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4527800PMC
July 2015

Malignant renal epithelioid angiomyolipoma associated with abdominopelvic hydatid cysts: a case report.

J Med Case Rep 2015 Apr 10;9:80. Epub 2015 Apr 10.

Department of Pathology, Ibn Sina University Hospital, Ahmed Balafrej Avenue, 10000, Rabat, Morocco.

Introduction: The World Health Organization defines epithelioid angiomyolipoma as a potentially malignant mesenchymal neoplasm characterized by proliferation of predominantly epithelioid cells and as closely related to the triphasic (classic) angiomyolipoma. It can be benign, potentially aggressive or malignant. The pathologist's role is crucial in making a positive diagnosis, providing appropriate patient management and assessing prognosis. In this report, we present a case of a patient with an epithelioid angiomyolipoma and hydatid cyst association. To the best of our knowledge, such an association has not been reported previously in the literature.

Case Presentation: A 70-year-old Arabian woman presented to our hospital with a 6-month history of a right lumbago and weight loss. Computed tomography objectified a mid-right renal tumor, several locoregional lymph nodes and four abdominopelvic cystic formations. The patient underwent a right nephroureterectomy and removal of abdominal and pelvic masses. Histologically, the tumor corresponded to a proliferation of large eosinophil cells, polygonal or ovoid, with epithelial appearance, and associated with thickened, hyalinized vessel walls, fat cells and bundles of smooth muscle cells. Mitoses were estimated at 2 per 50 high-power fields. In immunohistochemical study, epithelioid tumor cells expressed S-100 protein and Melan-A. The diagnosis of malignant epithelioid angiomyolipoma was made. The wall of the abdominopelvic cysts was eosinophilic and lamellar, corresponding to the cuticular membrane of hydatid cysts.

Conclusion: In our patient, careful histological examination and immunohistochemical study allowed us to make the correct diagnosis of angiomyolipoma in its malignant form. The association with hydatid cysts is what makes our case original.
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http://dx.doi.org/10.1186/s13256-015-0556-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4395905PMC
April 2015

[Not Available].

Can Urol Assoc J 2014 Nov;8(11-12):e910-2

Service d'Urologie A, Hôpital Ibn Sina, CHU Rabat, Maroc;

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http://dx.doi.org/10.5489/cuaj.2024DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4277532PMC
November 2014

Acute intestinal obstruction revealing synchronous gastrointestinal stromal tumors in a small bowel diverticulum and mucinous adenocarcinoma of the colon: a case report.

Pan Afr Med J 2015 2;21:172. Epub 2015 Jul 2.

Department of Pathology, Ibn Sina University Hospital, Rabat, Morocco.

Unlabelled: Gastrointestinalstromal tumors are rare neoplasms and represent 0,1% to 3% of all gastrointestinal cancers. They are the most frequent mesenchymal neoplasms of the gastrointestinal tract with a malignant potential and unpredictable behavior. The synchronous association with other primary gastrointestinal carcinoma has been rarely reported in the literature with increasing number in the last ten years. The associated Gastrointestinalstromal tumor is usually discovered incidentally during surgery for carcinoma. The limited number of these cases cannot confirm the existence of a common factor in tumorigenesis of these different tumors and other studies are needed to clarify the possible association. We report the first case in the literature of synchronous primary Gastrointestinalstromal tumors developed in small bowel diverticulum and mucinous adenocarcinoma of the colon.

Key Words: Synchronous, Gastrointestinalstromal tumors, Adenocarcinoma, Colon.
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http://dx.doi.org/10.11604/pamj.2015.21.172.2828DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4802801PMC
December 2016

[Not Available].

Can Urol Assoc J 2014 Sep;8(9-10):E666-9

Service d'urologie B, CHU Ibn Sina, Faculté de médecine et pharmacie de Rabat, Université Mohamed V souissi, Rabat, Maroc;

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http://dx.doi.org/10.5489/cuaj.700DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4164562PMC
September 2014

[Not Available].

Can Urol Assoc J 2014 Sep;8(9-10):E663-5

Service d'urologie B, CHU Ibn Sina, Faculté de médecine et pharmacie de Rabat, Université Mohamed V souissi, Rabat, Maroc;

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http://dx.doi.org/10.5489/cuaj.676DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4164561PMC
September 2014

Combined myoepithelial carcinoma and myoepithelioma in soft tissue: a case report and review of the literature.

J Med Case Rep 2014 Sep 24;8:317. Epub 2014 Sep 24.

Department of Pathology, Ibn Sina University Hospital, Rabat, Morocco.

Introduction: Soft tissue myoepithelial carcinoma and myoepithelioma are rare entities, part of myoepithelial tumors. They were incorporated into the World Health Organization classification of soft tissue tumors in 2002. Here we present an exceptional case of myoepithelial carcinoma and myoepithelioma association. To the best of our knowledge, such an association has never been reported in the literature.

Case Presentation: We report a case of myoepithelial carcinoma combined with myoepithelioma occurring in the soft tissue of the right forearm of an 84-year-old Arabian man. We describe the clinical, radiological and pathological features dominated by histological polymorphism. We will also describe the proposed histological criteria of malignancy and the major role of immunohistochemistry in positive and differential diagnosis. We finally mention the therapeutic arsenal available.

Conclusion: Through this work, we report that myoepithelioma of soft tissue can progress to malignant myoepithelioma.
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http://dx.doi.org/10.1186/1752-1947-8-317DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4181467PMC
September 2014

Juxtaglomerular cell tumor: a distinct mesenchymal tumor of kidney.

J Clin Imaging Sci 2014 30;4:33. Epub 2014 Jun 30.

Department of Pathology, Ibn Sina Hospital, Rabat, Morocco.

Juxtaglomerular cell tumor (JGCT) is an unusual mesenchymal entity of the kidney. It is a benign renin-secreting tumor causing hypertension and hypokalemia due to secondary hyperaldosteronism. It is curable if it is discovered early and surgically removed, but may cause a fatal outcome usually due to complications of associated hypertension.
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http://dx.doi.org/10.4103/2156-7514.135482DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4142465PMC
August 2014

Renal myelolipoma: a rare extra-adrenal tumor in a rare site: a case report and review of the literature.

J Med Case Rep 2013 Apr 4;7:92. Epub 2013 Apr 4.

Department of Pathology, Ibn Sina University Hospital, Rabat, Morocco.

Introduction: Myelolipomas are uncommon, benign tumors composed of mature adipose tissue and hematopoietic elements. They mostly occur in the adrenal glands, but extra-adrenal myelolipomas have also been reported in other locations such as the presacral region, retroperitoneum, pelvis and mediastinum. Here, we present a case of an extra-adrenal myelolipoma in a rare site: the renal parenchyma. To the best of our knowledge, it is only the third case reported in this unusual location.

Case Presentation: We report a case of primary myelolipoma occurring in the kidney of a 55-year-old Moroccan man. We describe the radiological and clinicopathologic features of this unusual tumor with a review of the literature, and we discuss differential diagnosis of retroperitoneal myelolipomas.

Conclusion: This case is noteworthy because the tumor site was unusual. Although renal myelolipoma is rare, it should be considered in the differential diagnosis of lesions in this site.
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http://dx.doi.org/10.1186/1752-1947-7-92DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3653706PMC
April 2013

[Frantz tumor: 2 new cases].

Pan Afr Med J 2013 4;14. Epub 2013 Jan 4.

Service Central D'anatomie Pathologique et Cytologie, CHU Ibn Sina, Rabat, Morocco.

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http://dx.doi.org/10.11604/pamj.2013.14.7.1412DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3597855PMC
September 2013

A gallbladder tumor revealing metastatic clear cell renal carcinoma: report of case and review of literature.

Diagn Pathol 2013 Jan 10;8. Epub 2013 Jan 10.

Department of Pathology, Ibn Sina Univesity Hospital, Rabat, Morocco.

Unlabelled: Metastatic renal cell carcinoma in the gallbladder is extremely rare, with reported frequencies of less than 0.6% in large autopsy reviews. Only 40 cases were reported in the literature. We report a first case of gallbladder polypoid tumor revealing metastatic clear cell renal cell carcinoma, which demonstrates the importance of radiological tests, histology and immunohistochemistry when making a definitive diagnosis. These examinations also allow differentiating metastatic clear cell renal cell carcinoma from other polypoid lesions in the gallbladder with clear cell morphology. Cholecystectomy should be performed to obtain a definitive diagnosis and to improve survival in case of solitary metastatic renal cell carcinoma.

Virtual Slides: The virtual slides' for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8956897238238989
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http://dx.doi.org/10.1186/1746-1596-8-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546909PMC
January 2013

Primary endobronchial leiomyosarcoma of the lung: clinical, gross and microscopic findings of two cases.

J Clin Imaging Sci 2012 29;2:35. Epub 2012 Jun 29.

Department of Pathology, Ibn Sina Hospital, Rabat, Morocco.

Primary leiomyosarcoma of the lung is an unusual malignant tumor. Among this entity, the endobronchial form is very rare and the preoperative diagnosis is extremely difficult. We present two different presentations and outcomes of primary endobronchial leiomyosarcoma of the lung. In both cases, the histological study and the immunohistochemical stain, of the surgical resection, provided the final diagnosis. Through those cases we present the diagnostic and therapeutic difficulties encountered.
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http://dx.doi.org/10.4103/2156-7514.97757DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3424854PMC
October 2012

[Pseudo tumoral textilome discovered twenty five years after laparotomy].

Rev Prat 2012 Feb;62(2):160

Service de chirurgie génêrale B, université Mohamed V, CHU lbn Sina, BP 1005, Rabat, Maroc.

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February 2012

Primary solitary fibrous tumor of the retroperitoneum.

Clin Pract 2011 Sep 13;1(4):e137. Epub 2011 Dec 13.

Department of pathology;

Solitary fibrous tumor is an uncommon neoplasm affecting adults and typically located in the pleura and can also occur in a large number of other extra thoracic sites. We present the case of a solitary fibrous tumor (SFT) of the retroperitoneum and describe their histopathological and immunohistochemical features. The identification of SFT in the retroperitoneum is of importance because its clinico-pathological behaviour is still unclear. The pathologist plays a fundamental role in establishing both the positive and differential diagnosis.
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http://dx.doi.org/10.4081/cp.2011.e137DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3981394PMC
September 2011

Calcified multilocular thymic cyst associated with thymoma: a case report.

J Med Case Rep 2011 Jun 21;5:225. Epub 2011 Jun 21.

Department of Pathology, Ibn Sina Hospital, Rabat, Morocco.

Introduction: There are few case reports of thymoma with a thymic cyst. Such an association renders it difficult for any pathologist to differentiate from other neoplasms, such as a cystic thymoma.

Case Presentation: A 50-year-old Berber woman from Morocco was admitted with a chronic cough of more than 10 years duration. Her medical history and physical examination were normal. Anterior chest radiography demonstrated a calcified opacity in her right anterior mediastinum. A chest-computed tomogram revealed a round cystic tumor, with significant calcification in her right anterior mediastinum. A surgical exploration was performed. The tumor seemed to be a well-encapsulated and totally calcified lesion, arising from the right lobe of her thymus. It was removed by partial resection of her thymus. Through histology, the calcified tumor exhibited some areas of multilocular fibrous-wall cysts. These cysts were partially lined by small cuboidal cells with severe chronic inflammation and an AB thymoma that arose from the wall of the cyst.

Conclusion: Greater attention should be given to multilocular thymic cysts, to exclude the possibility of neoplasm, especially when the cyst wall is thickened.
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http://dx.doi.org/10.1186/1752-1947-5-225DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3130682PMC
June 2011

Primary retroperitoneal mucinous cystadenoma with borderline malignancy in a male patient: a case report.

Cases J 2009 Nov 27;2:9098. Epub 2009 Nov 27.

Pathology Departement. Ibn Sina Hopital. Mohamed V University, Rabat, Morocco.

Introduction: Primary retroperitoneal mucinous cystadenoma is a rare tumor prevailing specifically in female gender. Its histogenesis is still unclear and its diagnosis is mainly based on morphological characteristics.

Case Presentation: the subject is a 44 years old man presenting an abdominal pain on the right side, with a palpable mass which appeared four months ago. Abdominal ultrasound (echography) revealed a retroperitoneal cystic process, which was successfully resected through laparotomy. Histopathological examination concluded to a mucinous cystadenoma with borderline malignancy foci. After a year of follow-up, no relapse was noticed in this patient.

Conclusion: Retroperitoneal mucinous cystadenoma is a rare tumor that should be considered in front of a retroperitoneal cystic process. Several hypotheses may explain the histogenesis of this pathological process. The interest in publishing this case report on primary retroperitoneal mucinous cystadenoma in a male patient lies in the rarity of occurrence of this syndrom in males as compared to females.
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http://dx.doi.org/10.1186/1757-1626-2-9098DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803895PMC
November 2009
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