A Curious Case of Autoimmune Pancreatitis with IgG4-related Sclerosing Cholangitis.

Immunoglobulin G4-related sclerosing cholangitis (IgG4-SC) is a novel entity that belongs to the immune-mediated fibroinflammatory class of IgG4-related diseases (IgG4-RD). IgG4-SC is noted to be one of the most frequent manifestations of extra-pancreatic disease among IgG4-RD, which is significantly different from primary SC (PSC) and cholangiocarcinoma (CC) as is evident in the varied approaches to treatment. IgG4-RD includes IgG4-SC and autoimmune pancreatitis (AIP).

Acute Dysphagia Caused by Sarcomatoid Squamous Cell Carcinoma of the Esophagus.

Sarcomatoid squamous cell carcinoma of the esophagus is a rare etiology of esophageal cancer. Due to its large polypoid character, patients suffering from this disease typically present with progressive dysphagia, weight loss, odynophagia, or chest pain. Risk factors for esophageal cancer include smoking, alcohol use, and chronic gastroesophageal reflux disease.

A Rare Case of Mixed Adenoneuroendocrine Carcinoma of the Ileocecal Valve.

Mixed adenoneuroendocrine carcinoma (MANEC) is an uncommon neoplasm with uncertain pathophysiology. In order to be classified as MANEC, the tumor must contain at least 30% neuroendocrine cells and 30% adenocarcinoma. The standardization of MANEC treatment has historically been difficult due to the lack of diagnostic histological classification.