Case Report:

A 21-year-old female presented with a 3-year history of left flank abdominal pain, exacerbated by Valsalva maneuvers. She had no relevant medical history and a normal physical examination. Upper endoscopy revealed chronic gastritis. Contrast-enhanced CT showed a well-defined, heterogeneous, rounded lesion (7.7 cm) in the pancreatic tail, with preserved cleavage planes. She was referred to hepatobiliary surgery and underwent distal pancreatectomy with splenectomy. The specimen revealed a 15 cm mass involving the splenic hilum. Histopathological analysis described a well-differentiated lesion with solid and papillary areas, alveolar architecture, intact capsule, and no vascular invasion, consistent with a solid pseudopapillary tumor.

Conclusion:

Despite its size, this rare pancreatic tumor demonstrated benign behavior. Imaging findings facilitated accurate diagnosis and timely surgical management.