A CASE OF ESOPHAGO-RESIDUAL GASTRIC COLLISION CARCINOMA

Abstract

The occurrence of colliding esophageal squamous cell carcinoma and gastric adenocarcinoma at the esophagogastric junction is rare. We found 10 previous reports of esophagogastric collision tumor in the literature. A 63-yearold man was admitted to the hospital because of dysphagia .23 years ago subtotal gastrectomy (Billroth I) was performed in this patient due to gastric ulcer. A moderately to poorly differentiated adenocarcinama on the esophagogastric junction was revealed by endoscopic examination and biopsies. Pathological diagnosis after total gastrectomy and partialesophagectomy was collision tumor of gastric adenocarcinoma and esophageal squamous cell carcinoma. Collision tumors can be difficult to detect and diagnose. However, if a preoperative diagnosis can be made, the patient's prognosis may be improved by the selection of preoperative radiotherapy or chemotherapy. Clinicians need to be aware of the possibility of esophagogastric collision carcinoma.