Malignant peripheral nerve sheath tumor (MPNST) is a rare malignant tumor that develops either from a preexisting neurofibroma or de novo. The cell of origin is believed to be the Schwann cell and possibly other nerve sheath cells. In this report, we describe a rare case of MPNST that arise from the socket of second left maxillary molar that has been already extracted in a young man. He was ref...

Most pancreatic ductal adenocarcinomas (PDAs) show solid growth pattern, but ductal adenocarcinomas may demonstrate intratumoral cystic appearance or accompany peritumoral non-neoplastic cystic lesions, thus mimicking cystic pancreatic tumors on imaging studies. The histopathologic findings for PDA with cystic feature are divided into neoplastic and non-neoplastic cysts. Neoplastic cystic chang...

The histopathologic features of experimental multifocal histoplasmic choroiditis in the primate are presented. Eyes were studied at various time periods from 30 days to 3 years after intracarotid injection with live Histoplasma capsulatum organisms. The acute lesions produced resolved into four distinct resolution patterns (chorioretinal scars, retinal pigment epithelial defects, subclinical le...

GA: granuloma annulare PNGD: palisaded neutrophilic granulomatous dermatitis RA: rheumatoid arthritis INTRODUCTION Palisaded neutrophilic granulomatous dermatitis (PNGD) is a typically associated with underlying disease states, including autoimmune connective tissue disease, lymphoproliferative disorders, and infections. Although most common in patients with rheumatoid arthritis (RA), PNGD can ...

Colorectal masses can be non-neoplasm, benign neoplasm and malignant neoplasm. Diagnosis of colorectal mass done by biopsy or surgery then followed histopathological examination. The aim this study was to described the histopathology feature in Anatomic Pathology Laboratory Arifin Achmad Regional Hospital Riau Province January 2015 - December 2019. This found 304 cases consisted men (55,6%) wom...

Localized involutional lipoatrophy (LIL) is a rare distinctive idiopathic form of localized lipoatrophy. The characteristic histopathologic feature of LIL are diminutive fat lobules composed of small adipocyte resembling fetal fat tissue. LIL is not a well-known disorder, there have been only a few reports on LIL in the English literature.We report a case of localised involutional lipoatrophy i...

A case of microcystic adenoma (glycogen-rich cystadenoma) of the exocrine pancreas in a 62-year-old white female presenting with adult-onset diabetes mellitus is reported. Clinical, histopathologic, and ultrastructural findings are discussed with particular emphasis on the presence of myoepithelial cells, a morphologic feature not seen in this tumor previously. The controversy over diabetes mel...

purpose : to introduce a novel classification system for the extent of choroid invasion and to analyze the incidence of histopathologic risk factors (hrfs) in the patients with retinoblastoma in china methods : the clinical data of 104 enucleated eyes diagnosed with retinoblastoma were retrospectively reviewed, and the pathological re-examination of the enucleated eyes was conducted. results : ...