Publications by authors named "Akif Doğan"

6 Publications

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Does systemic anti-tumor therapy increase COVID-19 risk in patients with cancer?

J Oncol Pharm Pract 2021 May 7:10781552211015762. Epub 2021 May 7.

Department of Medical Oncology, Kartal Dr. Lütfi Kirdar City Hospital, Health Science University, İstanbul, Turkey.

Purpose: We aimed to determine the COVID-19 infection rate and determine the factors that affect hospitalization and prognosis in patients receiving systemic chemotherapy (CT), immunotherapy (IT) and molecular-targeted therapies at our hospital within three months after the onset of COVID-19 pandemic.

Materials And Methods: The patients who received systemic treatment at chemotherapy unit with diagnosis of cancer between 11 March 2020 and 11 June 2020 were included. The clinical and demographic characteristics of patients, the systemic treatments that they received (CT, IT, targeted therapies), and the stage of disease were determined. For the parameters that affect the hospitalization of COVID-19 infected patients were also determined.

Results: Among 1149 patients with cancer, 84 of them were infected with COVID-19, and the median age of infected patients was 61.0 (IQR: 21-84) and 60.7% of them were male. As a subtype of cancers lung cancer was more frequent in the patients who infected with COVID compared with non-infected ones and the difference was statistically significant when the underlying malignities were compared (32.1% vs 19.0%,  = 0.031). The hospitalization rate and receiving COVID-19 treatment were more frequent in metastatic patients who were receiving palliative therapy, and the difference was statistically significant ( = 0.01,  = 0.03). In our study, infection rate was similar among patients treated with CT, IT and CT plus targeted therapy; however, fewer COVID-19 infections were seen at patients who received only targeted therapy.

Conclusion: COVID-19 infection is more frequent in cancer patients and tends to be more severe in metastatic cancer patients receiving anticancer treatment, and the continuation of palliative cancer treatments in these patients may cause increased cancer and infection-related morbidity and mortality.
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http://dx.doi.org/10.1177/10781552211015762DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8107490PMC
May 2021

Primary testicular lymphoma: Two case reports and review of the literature.

Arch Ital Urol Androl 2016 Jan 14;87(4):332-4. Epub 2016 Jan 14.

Department of Urology, Hisar Intercontinental Hospital, Umraniye, Istanbul.

Primary testicular lymphoma, is a rare testis tumor that accounts for only less than 9% of all testis tumors. In the preoperative period, it is extremely difficult to distinguish this tumor from other testis tumors. Its diagnosis is done by histological analysis. Most commonly encountered histological type is diffuse large Bcell lymphoma. Adjuvant radiotheraphy and/or chemotheraphy is given after orchiectomy. Prognosis is worse than other testis tumors. Non-metastatic tumors indicates good prognosis within one year. Ongoing research in patients with primary testicular lymphoma, are on efficacy of adjuvant theraphies and preventive and cure effect on extranodal extension to central nervous system which is the most common site for recurrency. There are conflicting results because of the small number of patient size. Here we present two cases with primary testicular lymphoma at the ages 71 and 82.
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http://dx.doi.org/10.4081/aiua.2015.4.332DOI Listing
January 2016

Safety of greenlight photoselective vaporisation of prostate in lower urinary tract symptoms due to benign prostatic hyperplasia in patients using anticoagulants due to cardiovascular comorbidities.

Arch Ital Urol Androl 2015 Jul 7;87(2):141-3. Epub 2015 Jul 7.

Hisar Intercontinental Hospital, Department of Urology, Umraniye, Istanbul.

Unlabelled: Lasers have been used in the management of benign prostatic hyperplasia for the last two decades. To be comparable, they should reduce or avoid the immediate and long-term complications of transurethral resection of the prostate (TURP) or open prostatectomy (OP), especially bleeding and need for blood transfusion. Although Holmium laser treatment of the prostate was compared frequently in terms of cardiovascular safety with TURP or OP, photoselective vaporisation of the prostate (PVP) was not largely evaluated. In this article we analyzed the current literature to see if there is convincing data to support the observation of some authors that use of PVP is associated with increased safety in patients on anticoagulants with cardiovascular comorbidities. With this purpose a Medline search between January 2004 to March 2013 was performed using evidence obtained from randomised trials, well-designed controlled studies without randomisation, individual cohort studies, individual case control studies and case reports

Results: In the last 10 years, several case-control and cohort studies have demonstrated the efficacy of PVP as well as its safety in patients with cardiovascular comorbidities using anticoagulants. The results confirmed the overall lower perioperative and postoperative morbidity of PVP, whereas the efficacy was comparable to TURP in the short term, despite a higher reoperation rate.

Conclusion: Although it is still developing, PVP with KTP or LBO seems to be a promising alternative to both TURP and OP in terms of cardiovascular safety and in patients using anticoagulants.
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http://dx.doi.org/10.4081/aiua.2015.2.141DOI Listing
July 2015

An unusual cause of hematuria; primary epiploic appendagitis.

Int J Surg Case Rep 2014 28;5(12):902-5. Epub 2014 Oct 28.

Department of General Surgery, Hisar Intercontinental Hospital, Saray Mahallesi Site Yolu Caddesi No. 7, Umraniye, 34768 Umraniye, Istanbul, Turkey.

Introduction: Primary epiploic appendagitis (PEA) is self limiting inflammatory disease of colonic epiploic appendices.

Presentation Of Case: Herein, a 40 years old patient describing abdomino-inguinal pain with clotty hematuria having PEA was presented. At first, the patient was thought to have a primary bladder pathology, but after a meticioulus examination, he found to have PEA and managed by conservative measures.

Discussion: Although PEA does not require surgical intervention, it may mimic other acute abdominal disorders which can be difficult to differentiate. Appendices overlying the sigmoid colon and cecum are more prone to be affected as they are more elongated and wider in size. The patient is usually admitted due to sudden onset of abdominal pain accompanied with fever, abdominal tenderness and leucocytosis.

Conclusion: The present case demonstrated that PEA located close to the lower urinary tract especially urinary bladder might present with urinary symptoms such as hematuria. dysuria, pollakuria and inguinal pain.
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http://dx.doi.org/10.1016/j.ijscr.2014.09.012DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4275855PMC
December 2014

Neutrophil lymphocyte ratio can be a valuable marker in defining disease activity in patients who have started anti-tumor necrosis factor (TNF) drugs for ankylosing spondylitis.

Eur J Rheumatol 2014 Sep 1;1(3):101-105. Epub 2014 Sep 1.

Department of Rheumatology, Uludağ University Faculty of Medicine, Bursa, Turkey.

Objective: Neutrophil lymphocyte ratio (NLR) has emerged as a valuable and reliable method for follow-up of systemic inflammatory disease. We herein aimed to evaluate the role of NLR in the clinical follow-up of inflammation and also to compare its relationship with other measures, such as erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and Bath Ankylosing Spondylitis Disease Activity Index (BASDAI).

Material And Methods: A total of 35 active ankylosing spondylitis (AS) and 38 healthy volunteers were included in the study. The patient group was enrolled for treatment with one anti-tumor necrosis factor (TNF) drug. Total blood count, ESR, CRP, and BASDAI score were obtained before and 3 months following the treatment. NLR was found with a mathematical calculation of the ratio of neutrophils with lymphocytes.

Results: The mean NLR value of the control group and patients was 1.90±0.89 and 2.67±1.17, respectively (p<0.05). After a 3-month course of treatment, the patient group had a mean NLR value of 1.8±0.7, which was significantly lower than pretreatment values (p<0.001). The post-treatment mean ESR, CRP, and BASDAI scores were significantly lower than mean baseline scores (p<0.001, p=0.007, p<0.001, respectively). Also, NLR was found to be correlated with BASDAI, ESR, and CRP (r=0.388, p<0.001; r=0.455, p<0.0001; and r=0.3389, p<0.005, respectively).

Conclusion: Neutrophil lymphocyte ratio could be a reliable and easily accessible method for follow-up of patients with AS.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5042217PMC
http://dx.doi.org/10.5152/eurjrheumatol.2014.034DOI Listing
September 2014

A case of recurrent renal aluminum hydroxide stone.

Case Rep Urol 2014 9;2014:212314. Epub 2014 Jun 9.

Hisar Intercontinental Hospital, Department of Clinical Biochemistry, Umraniye, 34768 Istanbul, Turkey.

Renal stone disease is characterized by the differences depending on the age, gender, and the geographic location of the patients. Seventy-five percent of the renal stone components is the calcium (Ca). The most common type of the stones is the Ca oxalate stones, while Ca phosphate, uric acid, struvite, and sistine stones are more rarely reported. Other than these types, triamterene, adenosine, silica, indinavir, and ephedrine stones are also reported in the literature as case reports. However, to the best of our knowledge, aluminum hydroxide stones was not reported reported before. Herein we will report a 38-years-old woman with the history of recurrent renal colic disease whose renal stone was determined as aluminum hydroxide stone in type. Aluminum mineral may be considered in the formation of kidney stones as it is widely used in the field of healthcare and cosmetics.
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http://dx.doi.org/10.1155/2014/212314DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4070326PMC
July 2014