We experienced a case of synchronously occurring multiple leiomyosarcoma in the jejunum and stomach. The presented case was a 75-year-old man with signs of panperitonitis. We performed a subtotal gastrectomy, a segmental resection of the jejunum and a Roux-en-Y anastomosis. Histologic examination of the resected specimen revealed a high-grade leiomyosarcoma having a high-grade mitosis and pleomorphism. Although it showed high malignancy potential, it was less than 5 cm in size. Also, it was a synchronously occurring multiple leiomyosarcoma having a sparing lesion in the duodenum and showed a lymphatic metastasis. In that point of view, it had many unusual aspects.
Aged ; Anastomosis, Roux-en-Y ; Duodenum ; Gastrectomy ; Humans ; Intestine, Small* ; Jejunum ; Leiomyosarcoma* ; Lymphatic Metastasis ; Mitosis ; Stomach*