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Extrapulmonary small-cell carcinoma involving the small bowel. (A) Large anterior abdominal tumour seen at initial presentation. (B) After initiation of chemotherapy, gas bubbles (arrows) indicate sites of tumour necrosis. (C) A large abscess develops from perforation of the small bowel. (D) Reduction of tumour size after 2 cycles of chemotherapy and drainage of the abscess.
