Diagnosis of cholangiocarcinoma: a case series and literature review.

Introduction: Cholangiocarcinoma is a rare neoplasm of the bile ducts. Risk factors include primary sclerosing cholangitis, Caroli's disease, infection, liver flukes, and chronic typhoid. Improvements in imaging and surgical techniques may allow for earlier diagnosis and improvements in patient survival.

Fever and headache in an intravenous drug user.

Zygomycosis refers to diseases caused by filamentous fungi from the class Zygomycetes. These organisms are ubiquitous in nature and can be found in soil as well as in decaying organic matter such as fruit and bread. Risk factors for zygomycosis include uncontrolled diabetes mellitus, hematologic malignancies, corticosteroid therapy, deferoxamine therapy, intravenous drug use, and malnutrition.