What are different types of gallbladder cancer?
There are several different types of gallbladder tumors, all of which begin when cells within the gallbladder undergo changes that cause them to grow and divide uncontrollably.
The specific types of gallbladder cancer include:
- Adenocarcinoma: The most common form of gallbladder cancer, adenocarcinomas initially develop within the gland-like cells that line the organs in the digestive tract. About 85% of gallbladder cancers are adenocarcinoma. There are three types of adenocarcinoma – non-papillary adenocaricoma, papillary adenocarcinoma and mucinous adenocarcinoma.
- Papillary adenocarcinoma: When viewed under a microscope, these cancer cells are arranged in finger-like projections within the gallbladder. Compared to other types of gallbladder cancer, papillary adenocarcinoma is much less likely to spread to nearby lymph nodes or distant organs, such as the liver.
- Less common types: While adenosquamous carcinomas, squamous cell carcinomas, small cell carcinomas, and sarcomas can potentially develop in the gallbladder, these cancer types are seen much less frequently than adenocarcinoma and papillary adenocarcinoma.