Successful treatment of gastric cancer with gastroduodenal intussusception by laparoscopic distal gastrectomy.

We report a case of a 93-year-old woman with gastric cancer who presented with gastroduodenal intussusception and was treated with laparoscopic distal gastrectomy. Esophagogastroduodenoscopy showed a giant protruding lesion in the gastric antrum extending into the duodenal bulb, and biopsy confirmed a well-differentiated adenocarcinoma. Abdominal contrast-enhanced computed tomography (CT) revealed a well-defined mass with homogeneous enhancement and a stalk arising from the distal stomach extending into the duodenal bulb. With a clinical diagnosis of gastric cancer with gastroduodenal intussusception, the patient underwent laparoscopic distal gastrectomy with regional lymph node dissection and reconstruction using the Billroth I method. Reduction of the intussusception was performed through a 4 cm incision under the xiphoid process in the epigastric region because it could not be laparoscopically reduced. Gross examination of the resected specimen showed a well-circumscribed, elevated lesion measuring 11.2 × 4.7 × 3.6 cm in the antrum. Microscopic examination of the elevated tumor confirmed the diagnosis of well-differentiated adenocarcinoma invading the gastric submucosal layer without lymph node metastasis. There was no lymphatic or venous invasion or lymph node metastasis. The postoperative course was uneventful, and her hemoglobin level improved to 11.9 g/dL. The patient has been postoperatively well without evidence of recurrence for 3 months. Part of the superficial spreading-type tumor may be drawn into the duodenum under strong peristaltic movement because it does not infiltrate the muscle layer.