Case Report
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World J Gastrointest Endosc. Aug 16, 2013; 5(8): 407-411
Published online Aug 16, 2013. doi: 10.4253/wjge.v5.i8.407
Malignant peritoneal mesothelioma presenting umbilical hernia and Sister Mary Joseph’s nodule
Kota Tsuruya, Masashi Matsushima, Takayuki Nakajima, Mia Fujisawa, Katsuya Shirakura, Muneki Igarashi, Jun Koike, Takayoshi Suzuki, Tetsuya Mine
Kota Tsuruya, Masashi Matsushima, Takayuki Nakajima, Mia Fujisawa, Katsuya Shirakura, Muneki Igarashi, Jun Koike, Takayoshi Suzuki, Tetsuya Mine, Division of Gastroenterology, Department of Internal Medicine, Tokai University School of Medicine, Isehara 259-1193, Japan
Author contributions: Tsuruya K and Matsushima M designed the report; Matsushima M, Nakajima T, Fujisawa M, Shirakura K, Igarashi M, Koike J and Suzuki T were attending doctors for the patients; Mine T organized the report; Tsuruya K wrote paper.
Correspondence to: Kota Tsuruya, MD, Division of Gastroenterology, Department of Internal Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan. ktsuruya@tokai-u.jp
Telephone: +81-463-931121 Fax: +81-463-937134
Received: April 7, 2013
Revised: June 12, 2013
Accepted: July 18, 2013
Published online: August 16, 2013
Abstract

Malignant peritoneal mesothelioma is a rare aggressive tumor of the peritoneum. An increasing number of malignant mesothelioma cases have been reported in recent years. We report here a very rare case of malignant peritoneal mesothelioma with both umbilical hernia and umbilical metastasis which is also called Sister Mary Joseph’s nodule. We performed laparoscopy which showed specific laparoscopic findings, and the pathological findings of the biopsy specimen led to the diagnosis. This case was associated with umbilical hernia which could be induced by massive ascites. A newly developed abdominal hernia should be noted as a primary symptom of malignant peritoneal mesothelioma, as shown in the present case.

Keywords: Malignant peritoneal mesothelioma, Umbilical hernia, Sister Mary Joseph’s nodule, Umbilical metastasis, Laparoscopy

Core tip: Malignant peritoneal mesothelioma is a rare aggressive tumor of the peritoneum. We performed laparoscopy which showed specific laparoscopic findings, and the pathological findings of the biopsy specimen led to the diagnosis. This case was associated with umbilical hernia and umbilical metastasis, which is also called as Sister Mary Joseph’s nodule.