Gallbladder cancer pathophysiology

	Gallbladder cancer Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Pathological Findings

Squamous cell gallbladder cancer

Squamous cell cancers develop from the skin-like cells that form the lining of the gallbladder, along with the gland cells. Doctors treat these cancers in the same way as adenocarcinomas.

Adenosquamous gallbladder cancer

Adenosquamous carcinomas are cancers that have both squamous cancer cells and glandular cancer cells.

Small cell cancer of the gallbladder

Small cell carcinomas are also called oat cell carcinomas. They are called this because the cancer cells are a distinctive oat shape.

Gallbladder sarcomas

Sarcoma is the name for a cancer that affects the supportive or protecting tissues of the body – also called the connective tissues. Muscles, blood vessels and nerves are all connective tissues. A cancer that begins in the muscle layer of the gallbladder is a sarcoma. Over 90% of cases of gallbladder cancer are adenocarcinomas.

Images courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology

Gallbladder carcinoma: Gross, natural color, close-up view of liver and gallbladder slice with typical neoplasm invading liver and surround a cavity with mixed type gallstones
Gallbladder carcinoma: Gross, natural color close-up view of gallbladder obliterated by white neoplasm with invasion of liver in a sunburst pattern slice of liver and gallbladder (an outstanding example of this rather rare tumor)
Gallbladder carcinoma: Gross, natural color shows stones in middle of tumor localization

Gallbladder carcinoma: Gross, natural color slab of liver with gallbladder
Gallbladder: Adenocarcinoma, arising from bile ducts
Gallbladder carcinoma: Gross, natural color of slice of liver showing attached gallbladder obliterated by tumor and with tumor invading adjacent liver parenchyma like a sunburst (an excellent example)