3,857 results match your criteria Benign Skull Tumors

Traumatic Rupture of a Skull Base Dermoid Cyst Mimicking Chronic Meningitis.

Cureus 2022 May 17;14(5):e25066. Epub 2022 May 17.

Department of Neurology, Mount Auburn Hospital, Harvard Medical School, Boston, USA.

Cranial dermoid cysts are rare, embryologic tumors containing fat, hair, and other ectodermal elements. They occur most frequently in the posterior fossa and are typically diagnosed as incidental findings on brain imaging done for an unrelated reason. Traumatic rupture of a previously unidentified intracranial dermoid cyst can mimic symptoms of post-concussion syndrome and should be ruled out with magnetic resonance imaging (MRI). Read More

View Article and Full-Text PDF

[Application of personalized guide plate combined with real-time navigation in repairing mandibular defect using fibula muscle flap].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2022 Jun;36(6):691-697

Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Bengbu Medical College, Bengbu Anhui, 233004, P. R. China.

Objective: To explore the application of personalized guide plate combined with intraoperative real-time navigation in repairing of mandibular defect using fibula muscle flap, providing the basis for the precise repair and reconstruction of mandible.

Methods: The clinical data of 12 patients (9 males and 3 females) aged from 23 to 71 years (mean, 55.5 years) between July 2019 and December 2021 were recorded. Read More

View Article and Full-Text PDF

Infra-Temporal and Pterygo-Palatine Fossae Tumors: A Frontier in Endoscopic Endonasal Surgery-Description of the Surgical Anatomy of the Approach and Report of Illustrative Cases.

Int J Environ Res Public Health 2022 May 25;19(11). Epub 2022 May 25.

Programma Neurochirurgia Ipofisi-Pituitary Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, 40139 Bologna, Italy.

Infratemporal and pterygopalatine fossae (ITF and PPF) represent two complex paramedian skull base areas, which can be defined as jewelry boxes, containing a large number of neurovascular and osteomuscular structures of primary importance. They are in close communication with many craniofacial areas, such as nasal/paranasal sinuses, orbit, middle cranial fossa, and oral cavities. Therefore, they can be involved by tumoral, infective or inflammatory lesions spreading from these spaces. Read More

View Article and Full-Text PDF

[Surgical Strategy of Benign Skull Base Tumors Based on Membrane Structure].

No Shinkei Geka 2022 May;50(3):681-694

Department of Neurosurgery, The Jikei University School of Medicine.

Meningiomas, schwannomas, and pituitary adenomas are typically benign tumors of intracranial origin, but all of these tumors have a border with the surrounding tissue. The basic structure is a clear "boundary" between the tumor and its surroundings, with a thin membrane layer to create that separation. This layer of membrane is the boundary between the tumor and its surroundings and provides a space for the tumor to grow its cells, and can be viewed as the so-called "tumor capsule. Read More

View Article and Full-Text PDF

[Basic Concept of Skull Base Reconstructive Surgery].

No Shinkei Geka 2022 May;50(3):586-594

Department of Plastic and Reconstructive Surgery, Graduate School of Medical and Dental Sciences(Medicine), Tokyo Medical and Dental University.

In most cases of anterior cranial fossa defects, the cranial cavity and the nasal cavity are connected, and it is necessary to reconstruct the skull base in a narrow sense to separate both cavities. If the surgical purpose is only separation, reconstruction with a pedicled local flap is often possible. As other surgical purposes such as the reconstruction of surrounding tissues are added, the transplanted tissue volume becomes insufficient, and free tissue transfer is required. Read More

View Article and Full-Text PDF

[Latest Findings on Meningioma:WHO grades 1/2/3].

Soichi Oya

No Shinkei Geka 2022 May;50(3):564-571

Department of Neurosurgery, Saitama Medical Center.

While most meningiomas are histologically benign tumors, higher grade meningiomas classified as WHO grades 2 and 3 are not always amenable to the standard treatment. To accurately assess the biological characteristics and prognosis of the tumor, the WHO classification of meningiomas has been continuously revised based on the latest findings. This article describes the recent modifications of the WHO classification of meningiomas. Read More

View Article and Full-Text PDF

Osteoid osteoma of the rib: A report of an extremely rare condition.

Int J Surg Case Rep 2022 May 6;94:107139. Epub 2022 May 6.

Department of Thoracic Surgery, Ibn Rochd-Casablanca University Hospital Center, Morocco; Hassan 2 University of Casablanca, Morocco.

Introduction: Osteoid osteoma (OO) is a type of benign bone tumor that usually affects long bones of the lower extremities. In this case report, we describe a successful surgical resection of an OO located in the rib which is an extremely rare location.

Case Presentation: This is a 23-year-old man, referred to our thoracic surgery department for a very intense nocturnal right chest pain for over two months, the physical examination was normal without clinically palpable chest mass. Read More

View Article and Full-Text PDF

Primary intraosseous cavernous hemangioma of the cranium: A systematic review of the literature.

World Neurosurg 2022 May 30. Epub 2022 May 30.

2nd Department of Neurosurgery, "Attikon" University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.

Primary intraosseous cavernous hemangioma (PICH) is a rare, benign tumor of vascular origin, typically arising in the vertebral body. Its presence in the skull is exceedingly rare, with only a few cases being reported worldwide. We carried out the first systematic review of the literature, covering the epidemiology, clinical and imaging features, management, and prognosis of cranial PICH. Read More

View Article and Full-Text PDF

Does reconstruction affect outcomes following exclusively endoscopic endonasal resection of benign orbital tumors: A systematic review with meta-analysis.

World J Otorhinolaryngol Head Neck Surg 2022 Mar 31;8(1):25-35. Epub 2022 Mar 31.

Division of Rhinology and Endoscopic Skull Base Surgery, Department of Otolaryngology-Head and Neck Surgery University of Washington Seattle Washington USA.

Objective: As exclusively endoscopic endonasal resection of benign orbital tumors has become more widespread, high-quality outcomes data are lacking regarding the decision of when and how to reconstruct the medial orbital wall following resection. The goal of this study was to systematically review pertinent literature to assess clinical outcomes relative to orbital reconstruction practices.

Methods: Data Sources: PubMed, EMBASE, Web of Science. Read More

View Article and Full-Text PDF

The development of a clinical algorithm for the diagnosis of tumours in the parapharyngeal space. A systematic review.

Acta Otorrinolaringol Esp (Engl Ed) 2022 May-Jun;73(3):141-150

Sección de Cirugía de Cabeza y Cuello, Servicio de Cirugía General, Hospital Nacional Profesor A. Posadas, El Palomar, Buenos Aires, Argentina.

Introduction: Parapharyngeal space (PPS) is defined as a deep space, located around the upper pharynx, in the shape of an inverted pyramid. Primary tumours in this region are rare, accounting for 0.5% of head and neck neoplasms, and most are benign. Read More

View Article and Full-Text PDF

Types of endoscopic surgical approaches for benign parapharyngeal space tumors.

Oral Oncol 2022 Jul 13;130:105875. Epub 2022 May 13.

Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China. Electronic address:

View Article and Full-Text PDF

Peripheral T-Cell Lymphoma Presenting as a Scalp Mass.

Brain Tumor Res Treat 2022 Apr;10(2):113-116

Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.

Peripheral scalp T-cell lymphoma is a very rare disease. We report a case of a 22-year-old man who presented an indolent large scalp mass in the right frontal scalp region. The patient's physical examination demonstrated no palpable mass in the chest, abdomen, and extremities. Read More

View Article and Full-Text PDF

Unresectable Clival Giant Cell Tumor, Tumor Control With Denosumab After Relapse: A Case Report and Systematic Review of the Literature.

J Pediatr Hematol Oncol 2022 Jul 9;44(5):201-209. Epub 2022 May 9.

Department of Pediatric Oncohematology.

Giant cell tumors (GCTs) of the skull base are rare entities. Although considered histologically benign, GCTs are locally aggressive with a high rate of local recurrence. The present case describes a 14-year-old girl with a clival GCT who underwent long-term therapy with denosumab after local relapse. Read More

View Article and Full-Text PDF

Skull Base Tumor Mimics.

Neuroimaging Clin N Am 2022 May;32(2):327-344

Department of Radiology, NYU Langone Health, 222 East 41st Street, 5th Floor Radiology, New York, NY 10017, USA. Electronic address:

Many different benign and malignant processes affect the central skull base and petrous apices. Clinical evaluation and tissue sampling are difficult because of its deep location, leaving imaging assessment the primary means for lesion evaluation. Skull base lesions demonstrate a variety of confusing appearances on imaging, creating diagnostic dilemmas. Read More

View Article and Full-Text PDF

Two-step treatment of a giant skull vault hemangioma: A rare case report and literature review.

Neurocirugia (Astur : Engl Ed) 2022 May-Jun;33(3):135-140

Department of Neurosurgery, 401 General Military Hospital of Athens, Kanellopoulou & Mesogeion Avenue, 11527 Athens, Greece.

Skull vault hemangiomas are benign vascular tumours of the calvaria that are usually asymptomatic or present as firm, painless lumps. We present a case of a 59-year-old female with a giant intraosseous calvarial hemangioma that was admitted in our department with a palpable mass over the left frontoparietal region, personality changes and impaired emotional and cognitive functions. The patient was treated with a two-step approach involving endovascular and surgical treatment, and suffered two rare, but recognized complications, a contrecoup intracerebral haemorrhage and valproate-induced stupor and parkinsonism. Read More

View Article and Full-Text PDF

A Systematic Review of Nasal Chondromesenchymal Hamartoma (NCMH) with a New Case Report.

Head Neck Pathol 2022 May 4. Epub 2022 May 4.

Clinical Dermatology, Leatherhead Hospital, Leatherhead, UK.

Nasal chondromesenchymal hamartoma (NCMH) is a very rare, benign sinonasal tract tumor commonly affecting infants. In this paper, in addition to presenting a systematic review of the literature on NCMH, we also report an unusual case of NCMH in an adolescent patient. A systematic review conducted following the PRISMA guidelines. Read More

View Article and Full-Text PDF

Extent of Resection Research in Skull Base Neurosurgery: Previous Studies and Future Directions.

World Neurosurg 2022 May;161:396-404

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA. Electronic address:

Surgery is the first-line therapy for most benign and malignant skull base tumors. Extent of resection (EOR) is a metric commonly used for preoperative surgical planning and to predict risk of postoperative tumor recurrence. Therefore, understanding the evidence on EOR in skull base neurosurgery is essential to providing optimal care for each patient. Read More

View Article and Full-Text PDF

Resection of Intracochlear Schwannomas With Immediate Cochlear Implantation.

Ann Otol Rhinol Laryngol 2022 May 2:34894221092844. Epub 2022 May 2.

Department of Otorhinolaryngology-Head and Neck Surgery, Rush University Medical Center, Chicago, IL, USA.

Introduction: Intralabyrinthine schwannomas, including the intracochlear variety, are rare benign tumors. They can cause a number of symptoms and have the potential to grow to involve other critical structures of the inner ear and skull base. While surgical resection is feasible, there is typically permanent hearing dysfunction as a result of resection and subsequent fibrosis. Read More

View Article and Full-Text PDF

A cartilage-forming tumor of the mandibular angle: a case report.

J Med Case Rep 2022 Apr 28;16(1):176. Epub 2022 Apr 28.

Department of Pathology and Biopathology Unit, Clinical Research Center, MOHAMMED VI University Hospital of Marrakech, Faculty of Medicine and Pharmacy of Marrakech, Cadi Ayyad University of Marrakech, Marrakech, Morocco.

Background: Mandible can be the site of benign or malignant lesions of different origins, including odontogenic and non-odontogenic lesions. Cartilage-forming tumors have been rarely reported at this site. Chondrosarcoma is a rare malignant cartilage-producing neoplasm that is extremely rare in the mandible. Read More

View Article and Full-Text PDF

[Surgical approach of transnasal endoscopic resection of benign lesions in the paramedian lateral skull base].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022 May;36(5):352-356

Department of Otolaryngology Head and Neck Surgery,Tianjin Huanhu Hospital,Tianjin,300350,China.

To investigate the surgical approach of transnasal endoscopic resection of benign lesions in the paramedian lateral skull base. Retrospectively analyze 40 cases of the clinical data of patients with benign lesions of the skull base from August 2018 to February 2021 with transnasal endoscopic surgery, including 9 cases of cholesteatoma, 6 cases of hemangioma, 1 case of hemangiopericytoma, 6 cases of schwannoma, 15 cases of sphenoid sinus lateral crypt meningocele and cerebrospinal fluid leak, 3 cases of nasopharyngeal carcinoma bone inflammation after radiotherapy. All patients underwent transnasal endoscopic surgery, and different surgical approaches were selected according to the lesion location. Read More

View Article and Full-Text PDF

Osteomas of temporal bone: a rare presentation.

BMJ Case Rep 2022 Apr 22;15(4). Epub 2022 Apr 22.

ENT, Head and Neck Surgery, Sri Ramachandra University Medical College, Chennai, India.

Osteoma of the temporal bone is an unusual benign slow-growing tumour composed of mature lamellar bone. It is a single pedunculated mass that often occurs unilaterally. Osteomas of external auditory canal are more common than in the other parts of temporal bone. Read More

View Article and Full-Text PDF

Identification and Management of Aggressive Meningiomas.

Front Oncol 2022 23;12:851758. Epub 2022 Mar 23.

Department of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, United States.

Meningiomas are common primary central nervous system tumors derived from the meninges, with management most frequently entailing serial monitoring or a combination of surgery and/or radiation therapy. Although often considered benign lesions, meningiomas can not only be surgically inaccessible but also exhibit aggressive growth and recurrence. In such cases, adjuvant radiation and systemic therapy may be required for tumor control. Read More

View Article and Full-Text PDF

Update from the 5th Edition of the World Health Organization Classification of Head and Neck Tumours: Tumours of the Ear.

Ann Sandison

Head Neck Pathol 2022 Mar 9;16(1):76-86. Epub 2022 Apr 9.

Guy's & St Thomas' NHS Foundation Trust, King's College London, London, UK.

In the recently published 5th Edition of the World Health Organisation Classification of Head and Neck Tumours, there are relatively few changes to report in terms of nomenclature in lesions of ear and temporal bone and fewer developments in molecular pathogenesis in comparison to other sites, particularly in sinonasal tract. Ear and temporal bone tumours are rare and biopsy material is limited. As a result, resources in the literature are scarce with few large series, no controlled clinical trials and the approaches to staging and management are not standardised. Read More

View Article and Full-Text PDF

Characterization and Classification of Keratinized Odontogenic Cysts in 29 Dogs.

J Vet Dent 2022 Jun 31;39(2):182-193. Epub 2022 Mar 31.

Specialty Oral Pathology for Animals, Geneseo, IL.

This retrospective case series presents a unique group of odontogenic cysts that are lined by heavily keratinized epithelium and contain laminated keratin. Keratinized odontogenic cyst (KOC) is proposed as appropriate terminology for the described lesions. The series evaluates cysts from 29 dogs, including clinical presentation, diagnostic imaging, and histopathology. Read More

View Article and Full-Text PDF

Rapid Automated Analysis of Skull Base Tumor Specimens Using Intraoperative Optical Imaging and Artificial Intelligence.

Neurosurgery 2022 06 30;90(6):758-767. Epub 2022 Mar 30.

Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.

Background: Accurate specimen analysis of skull base tumors is essential for providing personalized surgical treatment strategies. Intraoperative specimen interpretation can be challenging because of the wide range of skull base pathologies and lack of intraoperative pathology resources.

Objective: To develop an independent and parallel intraoperative workflow that can provide rapid and accurate skull base tumor specimen analysis using label-free optical imaging and artificial intelligence. Read More

View Article and Full-Text PDF

Anterior Petrosal Approach to Petrous Apex Meningioma: Climbing the Rock-Two-Dimensional Operative Video.

World Neurosurg 2022 Jun 18;162:67. Epub 2022 Mar 18.

Department of Neurosurgery and Skull Base Surgery, Hospital Ernesto Dornelles, Porto Alegre, Brazil.

A 47-year-old woman was referred to the neurological surgery department after a self-limiting episode of dizziness and headache. Magnetic resonance imaging showed an extra-axial mass in the right petrous apex, suggesting a meningioma. We chose the anterior petrosal approach (APA) because meningioma is a benign tumor with brainstem compression, and our goal was total removal for potential cure of the disease. Read More

View Article and Full-Text PDF

Displaced humeral pathological fracture secondary to intraosseous hemangioma.

Radiol Case Rep 2022 May 18;17(5):1609-1613. Epub 2022 Mar 18.

Orthopaedic Oncology Department, Miami Cancer Institute, 8900 N Kendall Dr., Miami, FL, 33176, USA.

Intraosseous hemangiomas are uncommon slow-growing benign bone tumors. Most of these lesions are located in the spine or skull and long bone location is rare. Here we present the case of a 63-year-old female with a pathological fracture of the left proximal humerus through an intraosseous hemangioma. Read More

View Article and Full-Text PDF

Inferior alveolar nerve preservation during resection and reconstruction of the mandible for benign tumors as a factor improving patient's quality of life.

J Craniomaxillofac Surg 2022 May 7;50(5):393-399. Epub 2022 Mar 7.

Burdenko Main Military Clinical Hospital, 3 Gospitalnaya Poloschad, Moscow, 105229, Russian Federation.

This prospective study aimed to evaluate neurosensory disturbance and quality of life in patients who underwent mandibular resection for benign tumors and whose inferior alveolar nerve (IAN) was either preserved or sacrificed. Mandibular resection was indicated owing to the presence of osteoradionecrosis in 25 patients and ameloblastoma in 15 patients. Resection was unilateral in 24 patients and bilateral in 16 patients. Read More

View Article and Full-Text PDF

Comparing the use of conventional and three-dimensional printing (3DP) in mandibular reconstruction.

Biomed Eng Online 2022 Mar 19;21(1):18. Epub 2022 Mar 19.

Department of Engineering, College of Engineering, Mathematics, and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK.

Background: There are a number of clinical disorders that require mandibular reconstruction (MR). Novel three-dimensional (3D) printing technology enables reconstructions to be more accurate and beneficial to the patient. However, there is currently no evidence identifying which techniques are better suited for MR, based on the type of clinical disorder the patient has. Read More

View Article and Full-Text PDF

Coexistence of craniopharyngioma and cranial fibrous dysplasia: a case series of clinicopathological study.

Yang-Hua Fan Zhi Li

Orphanet J Rare Dis 2022 03 18;17(1):126. Epub 2022 Mar 18.

Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No.119, the South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.

Background: Craniopharyngioma (CP) and cranial fibrous dysplasia (CFD) are rare embryonic benign cranial diseases that most commonly present during childhood or adolescence. The coexistence of CP and CFD is extremely rare and has not yet been reported.

Methods: We retrospectively reviewed the data of five patients with concomitant CP and CFD treated at Beijing Tiantan Hospital from January 2003 to January 2021 and summarized their clinicopathological features, treatment modalities, and outcomes. Read More

View Article and Full-Text PDF