Year: 1996
Type: article
Study design: Case Report
Abstract: We report herein a case of malignant Schwannoma of the stomach in a 42-year-old man complaining of anal bleeding who was diagnosed accurately preoperatively by fiberoptic examination. Histopathological examination of the biopsy specimen revealed that the tumor was consisted of bundles of spindle-shaped cells with frequent mitotic figures arranged in palisading pattern. Furthermore, positivity for vimentin and S-100 protein was confirmed immunohistologically. In spite of curative total gastrectomy, liver metastases developed 10 months after the operation. Because of the lack of diagnostic criteria and prognostic indicators, there remain differences in opinions about standard operation for this disease. Metastases were almost always due to hematogeneous in a review of the literature, and lymphogeneous metastases and peritoneal dissemination were seldomly observed. Therefore, adequate removal of the tumor without extensive regional lymph node dissection can be regarded sufficient treatment of the tumor.
Authors: Hiromitsu MATSUOKA, Kazuo TAKEMURA, Naotaka TOBE, Tomohiko OHTA, Takao OZASA, Takashi NAGASHIMA, Susumu YAMAGUCHI
Institution: St. Marianna University School of Medicine
Language: English
Subfield: Gastroenterology
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W2313636274