Cystic tumors of the pancreas are rare and may be confused with hydatid cysts, especially in endemic areas. The incidence of cystic neoplasms of the pancreas is relatively rare in the pediatric population and young adults. We present a 21-year-old female with a well-defined giant multiloculated cystic lesion in the body and tail of the pancreas, which was diagnosed as a hydatid cyst elsewhere. The patient underwent laparoscopic spleen-preserving distal pancreatectomy. There was no visible communication between the mucinous cystic neoplasm and the pancreatic duct. Histopathology confirmed the diagnosis of benign mucinous cystadenoma of the pancreas. Ambiguity in the management of the lesion arises when mucinous cystadenoma is commonly misdiagnosed as pancreatic pseudocyst because the surgical management is entirely different.