Poorly differentiated adenocarcinoma with extensive rhabdoid differentiation: Clinicopathological features of two cases arising in the gastrointestinal tract

This paper describes the pathological features of two cases of composite ex tra-renal rhabdoid tumor; that is, poorly differentiated carcinoma with ext ensive rhabdoid differentiation, arising in the small intestine of a 64-yea r-old man and in the pancreas of a 77-year-old woman, In both cases the tum or behaved aggressively and the patients died from disseminated malignancy within 3 months of original presentation and diagnosis. To the best of our knowledge these are the first examples of such tumors in the small intestin e and pancreas.