Unusual side effect of cannabis use: acute abdomen due to duodenal perforation

BACKGROUND The chronic use of synthetic cannabinoids (SCs) which has become an increasingly prevalent problem can rarely cause gastric and duodenal ulcer because of their effects on gastric secretion and emptying. Since peptic ulcer disease (PUD) is a rarely seen entity in patients who consult to the emergency service with complaints of abdominal pain, most of the physicians do not suspect of this clinical diagnosis. Perforation is a mortal complication of PUD, and early diagnosis and emergency surgery are life-saving procedures. CASE PRESENTATION A 16-year-old male patient was referred to our emergency service from another center with abdominal distension, complaints of abdominal pain, and bilious vomiting. His medical history revealed that he had been regularly using bonsai for the past 3 years. Plain abdominal radiograms of standing position revealed subdiaphragmatic free air, then we performed laparotomy which disclosed perforation of the first part of the duodenum. Surgical intervention with omental patch and primary closure (Graham patch) was successful. The patient who underwent nasogastric decompression and received antibiotherapy had not experienced any complication during the postoperative follow-up period. CONCLUSION Herein, as an unusual manifestation, a patient who developed duodenal perforation following chronic SC use has been reported. In adolescent patients admitted with PUD or its complications to the emergency services, it is important to inquire for the use of addictive substances which are increasingly prevalent in order to determine the etiology.