Alireza Ghannadan

Department of Pathology, Cancer Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.

[ 1 ] - Head and Neck Lymphoma in an Iranian Population

Introduction: This study is aimed to assess the prevalence and characteristics of head and neck lymphoma in a defined group of an Iranian population.   Materials and Methods: In this retrospective study, 126,450 biopsy reports from two referral Pathology Departments, (Tehran, the capital of Iran) were evaluated. In cases with head and neck lymphoma, other variables such as age, sex, specific lo...

[ 2 ] - Cutaneous Metaplastic Synovial Cyst: A Case Report

Cutaneous metaplastic synovial cyst (CMSC), presents as a solitary, tender subcutaneous nodule that usually occurs at the site of previous surgery or trauma. Histologically, the lesion is characterized by a cystic structure with villous-like projections that lined by metaplastic synovial tissue. The main cause remains unclear, but trauma is presumed to be a precipitating factor, as most reporte...

[ 3 ] - Palmoplantar Psoriasis versus Eczema: Major Histopathologic Clues for Diagnosis

Background & Objectives:  Accurate differentiation of eczema and psoriasis can be difficult, especially in areas of palm and sole. This study was designed to evaluate histopathological features and identify statistically significant parameters in distinguishing palmoplantar psoriasis from eczema of these regions in patients referring to Razi Skin Hospital, Tehran, Iran. Methods: In a cross-sec...

[ 4 ] - Hydroxychloroquine-induced Unusual Generalized Pustular Cutaneous Reaction As a New Clinical Entity: A Case Series

Background: Pustular Psoriasis (PP) and Acute Generalized Exanthematous Pustulosis (AGEP) clinically resemble each other. There are many patients with generalized pustular presentations like hydroxychloroquine-induced pustular reaction who do not completely fall within PP or AGEP categories and needed to be more evaluated. So we examined a large series of these reactions to hyd...