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  1. Colonoscopy, Adenocarcinoma

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    Description: The image on the left demonstrates numerous adenomas (> 100 observed during the colonoscopy). The image on the right (yellow arrows) is suspicious for colon cancer and was biopsied. Summary of Pathology Report: Moderately differentiated adenocarcinoma with focal mucinous adenocarcinoma differentiation. Adenocarcinoma is a cancer of an epithelium that originates in glandular tissue. Epithelial tissue includes, but is not limited to, the surface layer of skin, glands, and a variety of other tissue that lines the cavities and organs of the body. Epithelium can be derived embryologically from ectoderm, endoderm or mesoderm. To be classified as Adenocarcinoma, the cells do not necessarily need to be part of a gland, as long as they have secretory properties. Well differentiated adenocarcinomas tend to resemble the glandular tissue that they are derived from, while poorly differentiated adenocarcinomas may not. By staining the cells from a biopsy, a pathologist can determine whether the tumor is an adenocarcinoma or some other type of cancer. Adenocarcinomas can arise in many tissues of the body due to the ubiquitous nature of glands within the body. While each gland may not be secreting the same substance, as long as there is an exocrine function to the cell, it is considered glandular and its malignant form is therefore named adenocarcinoma. Endocrine gland tumors, such as a VIPoma, an insulinoma, a pheochromocytoma, etc., are typically not referred to as adenocarcinomas, but rather, are often called neuroendocrine tumors. If the glandular tissue is abnormal, but benign, it is said to be an adenoma. Benign adenomas typically do not invade other tissue and rarely metastasize. Malignant adenocarcinomas invade other tissues and often metastasize given enough time to do so.
    Keywords: Condylomata Acuminata, Cancer, epithelium

  2. Rectum, high grade dysplasia early rectal cancer

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    Description: Rectum - high grade dysplasia early rectal cancer The rectum is the portion of the large bowel that lies in the pelvis, terminating at the anus. Cancer of the rectum is the disease characterized by the development of malignant cells in the lining or epithelium of the rectum. Malignant cells have changed such that they lose normal control mechanisms governing growth. These cells may invade surrounding local tissue or they may spread throughout the body and invade other organ systems.
    Keywords: rectum cancer, tumor, Neoplasms, neoplasm, Cancer, Rectal Neoplasms, Digestive System Neoplasms

  3. Rectum, advanced cancer

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    Description: Rectum - advanced cancer. The rectum is the portion of the large bowel that lies in the pelvis, terminating at the anus. Cancer of the rectum is the disease characterized by the development of malignant cells in the lining or epithelium of the rectum. Malignant cells have changed such that they lose normal control mechanisms governing growth. These cells may invade surrounding local tissue or they may spread throughout the body and invade other organ systems.
    Keywords: Digestive System Neoplasms, tumor, Neoplasms, neoplasm, Cancer

  4. Rectum, adenocarcinoma

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    Description: Rectum - adenocarcinoma Adenocarcinoma is the carcinoma derived from glandular tissue or in which the tumor cells form recognizable glandular structures. The World Health Organization recognizes four categories of adenocarcinoma: acinar, papillary, bronchioalveolar, and solid carcinoma with mucus formation; it can be further subclassified into well, moderate, and poorly differentiated forms.
    Keywords: Adenocarcinoma, glandular cancer, Cancer

  5. Rectum, bleeding rectal carcinoid tumor

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    Description: Rectum - bleeding rectal carcinoid tumor The rectum is the portion of the large bowel that lies in the pelvis, terminating at the anus. Cancer of the rectum is the disease characterized by the development of malignant cells in the lining or epithelium of the rectum. Malignant cells have changed such that they lose normal control mechanisms governing growth. These cells may invade surrounding local tissue or they may spread throughout the body and invade other organ systems.
    Keywords: Cancer, tumor, Rectal Neoplasms, Neoplasms, neoplasm, Digestive System Neoplasms