This lesion arose in the small intestine, resulting in obstruction and probably was related to use of non-steroidal anti-inflammatory drugs. Cortina G, Wren S, Armstrong B, Lewin K, Fajardo L. Clinical and pathologic overlap in nonsteroidal anti-inflammatory drug-related small bowel diaphragm disease and the neuromuscular and vascular hamartoma of the small bowel. Am J Surg Pathol. 1999 Nov;23(11):1414-7. www.innovativsciencepress.com Case by Dr. Elizabeth Montgomery, Clinica

A needle biopsy of this pancreatic solid pseudopapillary neoplasm was labeled "gastric mass". We initially tried to make it into a neuroendocrine tumor.... Sometimes the needle is not where it is believed to be. LEF1 is a nice clean nuclear stain and easier to interpret than beta catenin. Case by Dr. Elizabeth Montgomery, Clinical Professor, Vice Chair of Faculty Development & Mentoring, Director of Surgical Pathology Fellowship Training Program, Co-Director, Pathology Refere