-Case Reports-

Local Recurrence of Lung Adenocarcinoma 10 Years after Left Upper Lobectomy Resembling Pseudomesotheliomatous Adenocarcinoma: A Case Report

Junichi Okamoto^1,2, Hirotoshi Kubokura^1,2, Norio Motoda³, Hideko Hoshina¹, Hideaki Ishii⁴, Yasuhiko Kitayama³ and Jitsuo Usuda²

¹Department of Thoracic Surgery, Nippon Medical School Musashi Kosugi Hospital
²Department of Thoracic Surgery, Nippon Medical School
³Department of Pathology, Nippon Medical School Musashi Kosugi Hospital
⁴Department of Pathology, Nippon Medical School Hospital

The form and timing of the local recurrence of lung cancer can be unpredictable and unexpected. Pseudomesotheliomatous adenocarcinoma is a rare tumor that mimics malignant pleural mesothelioma both clinically and pathologically. Distinguishing pseudomesotheliomatous adenocarcinoma from malignant pleural mesothelioma on the basis of clinical findings can be difficult; therefore, a biopsy is usually required for diagnosis. Here we report on a 73-year-old Japanese man who presented with extensive dissemination along the pleural surfaces and clinical findings similar to those of pseudomesotheliomatous lung cancer 10 years after undergoing left upper lobectomy for lung adenocarcinoma. This report provides information that will help physicians establish an accurate diagnosis in similar cases.

J Nippon Med Sch 2014; 81: 173-178

Keywords
pseudomesotheliomatous carcinoma, good prognosis, recurrence

Correspondence to
Junichi Okamoto, MD, PhD, Department of Thoracic Surgery, Nippon Medical School Musashi Kosugi Hospital, 1-396 Kosugi-cho, Nakahara-ku, Kawasaki, Kanagawa 211-8533, Japan
s3021@nms.ac.jp

Received, May 15, 2013
Accepted, August 26, 2013