Metastatic Tumor of the Small Intestine from Lung Cancer, Forming a Large Abdominal Mass.

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We experienced a case with a metastatic ileac tumor from lung cancer forming a large abdominal mass, which was found after an asymptomatic post-operative period of 17 months and was diagnosed without a surgical procedure.<BR>A 59-year-old male, who had received right upper lobectomy on March 23, 1988 for squamous cell carcinoma of the lung, was admitted complaining of a large abdominal mass after a 17-month asymptomatic period. A firmly elastic mass 10cm in diameter was palpable in the lower abdomen. CT scanning and MR imaging showed a giant abdominal tumor with a large cavity in the right frontal part of the pelvis, with the lower border of the tumor reaching the bladder wall. Contrast enhancement by percutaneous puncture revealed a connection between the cavity and small intestine. The biopsy specimen obtained during this procedure revealed squamous cell carcinoma which was strongly suggestive of a metastatic tumor from the lung. At autopsy, the 14×11×6cm mass and its neoplastic communication with the ileum were confirmed.<BR>Recently, reports on metastasis to the small intestine from primary lung cancer have increased. However, our case presented in this report is rare since it was found as a palpable large mass after an asymptomatic course of more than a year and the diagnosis of small bowel metastasis was established without a surgical operation.
特定非営利活動法人日本肺癌学会の論文