Which of the following statements regarding carcinoid tumor is not true?: (A) On histopathology 4 distinctive forms are present, (B) Extensive involvement of small intestine is associated with higher chance of lung involvement, (C) 5 year survival for carcinoid tumors is > 60%, (D) 80% of appendiceal carcinoids are accidently detected during surgery for other indications
Answer is A. On histopatholgy the carcinoid tumor may show 5 distinct patterns Solid,insular and nodular cords Trabecular pattern Tubules and glands/rosette like pattern Poorly differentiated pattern or atypical pattern Mixed pattern Note-Commonest feature of carcinoid is cutaneous flushing