Cytologic features of hepatic YAP1-TFE3 rearranged epithelioid hemangioendothelioma.

Epithelioid hemangioendothelioma (EHE) is a rare vascular tumor of intermediate malignancy, often with indolent behavior. Though most cases have a characteristic WWTR1-CAMTA1 gene fusion, a subtype of EHE with YAP1-TFE3 fusions and a distinct morphology has recently been described histologically, but no cases of YAP1-TFE3 EHE have been described in the cytology literature. We herein report on a case of YAP1-TFE3 fusion associated EHE diagnosed on fine-needle aspiration and core biopsy of a liver mass in an 18-year-old male patient who presented with synchronous lung and liver involvement.

Acinar cell induced autolysis is a frequent occurrence in CytoLyt-fixed pancreatic fine needle aspiration specimens: An analysis of 157 cytology samples.

Background: Although 10% formalin is a standard preservative in pancreatic FNAs, the effect of CytoLyt on pancreatic tissue preservation has not been systematically explored.

Methods: Smears and cell blocks from CytoLyt-fixed (CF-CBs) and formalin-fixed (FF-CBs) pancreatic FNAs were blindly reviewed without knowledge of the fixative used, and the presence of tissue/tumor autolysis was noted. Controls included FF-CBs from pancreatic FNAs, CF-CBs from nonpancreatic FNAs, and 4 pancreatic FNAs with matched CF-CBs and FF-CBs.

Adrenal gland fine needle aspiration: a multi-institutional analysis of 139 cases.

Introduction: Adrenal gland lesions span a range of entities from benign and malignant primary neoplasms to metastatic tumors. Fine-needle aspiration (FNA) provides a minimally invasive diagnostic tool to stage patients with known malignancy and procure material for molecular testing. This study characterizes the clinicopathologic associations of patients with adrenal gland FNA from 2 large hospitals.

Visceral Kaposi Sarcoma Presenting as Small Bowel Intussusception: A Rare Presentation and Call to Action.

Surgical emergencies related to visceral involvement of Kaposi sarcoma (KS) are rare complications of the disease. In this report, we describe a case of visceral KS causing small bowel intussusception in a young, previously undiagnosed human immunodeficiency virus (HIV)-positive patient. Southern surgeons should be particularly attentive to HIV/AIDS-related disease as a cause of surgical pathology, particularly in the southeast, and can play a significant advocacy role for improved access to HIV/AIDS diagnostic and treatment services.

Phosphatidylinositol-3-phosphate regulates sorting and processing of amyloid precursor protein through the endosomal system.

Defects in endosomal sorting have been implicated in Alzheimer's disease. Endosomal traffic is largely controlled by phosphatidylinositol-3-phosphate, a phosphoinositide synthesized primarily by lipid kinase Vps34. Here we show that phosphatidylinositol-3-phosphate is selectively deficient in brain tissue from humans with Alzheimer's disease and Alzheimer's disease mouse models.