Delayed Presenting Gastric Duplication Cyst Mimicking a Left Adrenal Cyst in a Young Female: A Case Report with a Literature Review.

Introduction: Gastric duplication cyst (GDC) is a rare congenital anomaly of the gastrointestinal tract. Though GDC is often misdiagnosed, misidentification as an adrenal cyst has rarely been reported. Herein, we report a case of GDC in a young female mimicking an adrenal cyst.

Case presentation: A 17-year-old female presented with chronic epigastric pain, nausea, and intermittent vomiting. Physical examinations revealed mild tenderness in the epigastric region. Esophagogastroduodenoscopy showed no abnormality. Ultrasound, contrast-enhanced computed tomography scan, and MRI of the abdomen and pelvis showed an oval-shaped left adrenal cystic lesion measuring 33 × 26 mm. Preoperative blood investigations and hormonal assessments were normal. Laparoscopy showed that the cyst originated from the greater curvature of the stomach. The left adrenal gland was normal. After an intraoperative consultation with a gastrointestinal surgeon, a wedge resection of the cyst was performed. Histopathology confirmed the gastric duplication cyst.

Conclusion: GDCs are rare congenital malformations that may become symptomatic during adulthood. They can mimic adrenal cysts and lead to misdiagnosis.