Atlas of Gastrointestinal Endoscopy by A. Freytag, T. Deist and M. Kutscha - colon, tumors Tumors Staging of carcinomas see stages of carcinomas . Carcinoid Two sigmoid carcinoids in a 55- year old patient. The tumors are not hormone- producing, each 1,5 cm in size. The right photo shows a necrosis on top of the tumor. Carcinoid tumors may occurr at singular or multiple locations throughout the gastrointestinal tract, but also in the bronchial tract.
Preferred sites are rectum and appendix.
Both tumors are larger than 1 cm. They are surgically excised. The stenosis can t be passed by the coloscope. The tumor basis is ulcerated. Metastasized stenosing rectal carcinoma.