title: Generalized peritonitis arising from small bowel metastasis in a lung cancer patient.
abstract: Symptomatic gastrointestinal metastasis from lung malignancy is rarely reported. In this report, we present a case of lung adenocarcinoma with acute abdominal pain from small bowel perforation. The patient underwent small bowel resection and the final diagnosis was metastatic adenocarcinoma originating from lung. Immunohistochemistry was positive for thyroid transcription factor-1 and cytokeratin 7 (CK7), and negative for CK20. We present this rare case and briefly review the literature.
authors: Department of Surgery, Chonnam National University Hwasun Hospital, Hwasun, Korea.
authors: Young Joo
authors: YJ
authors: Park
authors: Kwang Yong
authors: KY
authors: Kim
authors: Ji Young
authors: JY
authors: Park
authors: Jin Sung
authors: JS
authors: Cho
authors: Young
authors: Y
authors: Kim
authors: Sun Hyoung
authors: SH
authors: Shin
keywords: Gastrointestinal tract; Immunohistochemistry; Lung cancer; Metastasis