SMALL INTESTINE (ICD‐O‐3 ICD‐O C17) Rules for Classification The classification applies only to carcinomas. There should be histological confirmation of the disease. Anatomical Subsites (Fig. 155) Duodenum (C17.0) Jejunum (C17.1)…
MERKEL CELL CARCINOMA OF SKIN (ICD‐O‐3 C44.0–9, C63.2) Rules for Classification The classification applies only to Merkel cell carcinomas. There should be histological confirmation of the disease. Regional Lymph Nodes…
EXTRAHEPATIC BILE DUCTS – PERIHILAR (ICD‐O‐3 C24.0) Rules for Classification The classification applies to carcinomas of the extrahepatic bile ducts of perihilar localization (Klatskin tumour). Included are the right, left…
LIVER – INTRAHEPATIC BILE DUCTS (ICD‐O‐3 C22.1) Rules for Classification The staging system applies only to intrahepatic cholangiocarcinoma, cholangiocellular carcinoma, and combined hepatocellular and cholangiocarcinoma (mixed hepatocellular/ cholangiocellular carcinoma) Regional…
GESTATIONAL TROPHOBLASTIC TUMOURS (ICD‐O‐3 C58) The following classification for gestational trophoblastic tumours is based on that of FIGO adopted in 1992 and updated in 2001 (Ngan HYS, Bender H, Benedet…
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WELL‐DIFFERENTIATED NEUROENDOCRINE TUMOURS OF THE PANCREAS Rules for Classification This classification system applies to well‐differentiated neuroendocrine tumours (carcinoid tumours and atypical carcinoid tumours) of the pancreas. High‐grade neuroendocrine carcinomas are…
MALIGNANT MELANOMA OF UPPER AERODIGESTIVE TRACT (ICD‐O C00–06,10–14, 30–32) Rules for Classification The classification applies only to mucosal malignant melanomas of the head and neck region, i.e., of the upper…
MAJOR SALIVARY GLANDS (ICD‐O C07, C08) Rules for Classification The classification applies only to carcinomas of the major salivary glands. Tumours arising in minor salivary glands (mucus‐secreting glands in the…
EXTRAHEPATIC BILE DUCTS – DISTAL (ICD‐O‐3 C24.0) Rules for Classification The classification applies to carcinomas of the extrahepatic bile ducts distal to the insertion of the cystic duct. Cystic duct…
