Publications by authors named "Fatih Gŏktay"

Scabies, caused by the Sarcoptes scabiei var hominis mite burrowing into the skin, is a highly contagious disease characterized by intense nocturnal itching. Its global impact is considerable, affecting more than 200 million individuals annually and posing significant challenges to healthcare systems worldwide. Transmission occurs primarily through direct skin-to-skin contact, contributing to its widespread prevalence and emergence as a substantial public health concern affecting large populations.

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Background: The diagnosis of superficial fungal infections is still mostly based on direct microscopic examination with potassium hydroxide solution. However, this method can be time consuming, and its diagnostic accuracy rates vary widely depending on the clinician's experience.

Objectives: This study presents a deep neural network structure that enables the rapid solutions for these problems and can perform automatic fungi detection in grayscale images without dyes.

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Background: Digital myxoid pseudocysts (DMPs) are the most common benign degenerative lesions of the nail unit. There is currently no consensus regarding first-line treatments for DMPs.

Objective: To evaluate demographic and clinical features and treatment methods of DMP and examine recurrence rates and factors that may affect recurrence.

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Background And Objectives: The dermoscopic features of glomus tumors have only been described in a few case reports. The aim of this research was to define the clinical and dermoscopic features of subungual glomus tumors.

Methods: Thirty-two patients with subungual glomus tumors were evaluated retrospectively.

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Introduction: Dermatologists see many patients with nail disorders requiring surgical interventions. However, nail surgery is often found to be difficult by dermatologists. The aim of this study was to evaluate the effectiveness of an integrated nail surgery course.

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Background: Ultrasonography has demonstrated a shortening of the distance between the origin of the nail plate and the base of the distal phalanx in retronychia. The aim of this study was to analyze the clinical and ultrasonographic features of retronychia.

Methods: We evaluated the clinical findings in 18 patients with retronychia, along with the ratio of ultrasonographic distance a, extending between the nail plate origin and the base of the distal phalanx, to distance b, perpendicular to distance a, extending between the nail plate origin and the upper margin of the distal phalanx.

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A case of adult-onset longitudinal melanonychia caused by a compound nevus is described. Longitudinal melanonychias are mainly caused by melanocytic activation (hypermelanosis), lentigo (benign melanocytic hyperplasia), nevus, and melanoma. Nevi are more commonly seen in children than adults; however, melanocytic activation, atypical melanocytic proliferation, and melanoma are more frequent in adults.

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Introduction: Chronic paronychia (CP) is an inflammatory disease of the nail folds. Staging of CP is important for clinicians. We developed an objective scale that evaluates each finding of CP separately in addition to evaluating the treatment process and follow-up.

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Melanocytic lesions of the nail unit are traditionally classified as follows: melanocytic activation, lentigo, nevi, and melanoma. Undoubtedly, melanoma is the most important malignant tumor of the nail unit. Differentiating nail unit melanoma from other melanocytic lesions is often difficult both clinically and histopathologically.

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Pregnancy causes some physiological skin changes, such as hyperpigmentation and striae gravidarum. Thickening of scalp hair and a prolonged anagen phase are also known to occur during pregnancy. However, a limited number of studies have been conducted on the effect of pregnancy on the nails.

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Background: Subungual exostosis (SE) and subungual osteochondroma (SO) are an uncommon, benign tumor of the distal phalanx. The purpose of this retrospective study was to evaluate clinical, demographical, and radiological features; treatment modalities; and follow-up results in SE and SO cases.

Methods: Twenty-five cases were confirmed histopathologically as SE or SO.

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Eccrine poroma is a rare benign adnexal neoplasm originating from a portion of the intraepidermal eccrine sweat gland duct and the acrosyringium. Typically, the lesions are asymptomatic, slow-growing nodules, which may be found in any sweat gland-bearing area. Multiple red lacunae, glomerular vessels, hairpin vessels, flower- and leaf-like vascular patterns, a polymorphic vascular pattern, globule/lacunae-like structures, a frog egg-like appearance, and comedo-like openings have been defined as characteristic dermoscopic patterns of the disease.

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Recently dermoscopic patterns, that can be useful in the diagnosis of distal and lateral subungual onychomycosis, were identified. In this study, we aimed to determine the frequency of the defined patterns so far and additionally to identify other patterns that were observed and to investigate the place of these patterns in the diagnosis of Distal Lateral Subungual Onychomycosis (DLSO) in the dermoscopic examination of the patients with pre-diagnosis of DLSO. Patients admitted dermatology outpatient clinic of Haydarpasa Numune Training and Research Hospital with the complaint of nail disturbance suspicious for DLSO (97 patients) between the August 2015 and February 2016.

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