DOI: 10.36347/sasjs.2020.v06i11.002

Pages: 368-370

Mesothelial cyst is a rare benign lesion of mesothelial origin. It is usually asymptomatic but may have non specific symptoms. So Accurate diagnosis and optimal management of this condition remains uncertain. Case Report: We report a 14-year-old boy, who presented with abdominal pain and lump. Magnetic Resonance Imaging (MRI) revealed a large well defined multiloculated lesion in retroperitoneum in anterior right pararenal space. The differential diagnosis included benign cystic lesion, lymphangioma, cystic teratoma and duplication cyst. A laparotomy was performed due to his symptoms and size of the cyst. Macroscopically, a 14 × 10 × 5 cm cystic lesion with necrotic fluid and multiple ridges was found. It was resected en bloc. Histology revealed a diagnosis of Mesothelial cyst. The patient recovered well and had no recurrence at 1-year follow-up. Conclusion: Because of rarity and nonspecific symptoms pre operative diagnosis was difficult. Treatment of choice is complete surgical excision.