Frantz's tumour, solid pseudopapillary epithelial neoplasm (SPEN).

To cite: Tanapanpanit O, Kanngurn S, Pongpirul K. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2016-218403 DESCRIPTION A 29-year-old woman from Myanmar underwent medical check-up before having a baby. She was healthy and had no familial history of pancreatic disease or cancer. Physical examination revealed an ill-defined palpable mass arising from the left hypochondriac region. Blood tests including tumour marker levels were normal. Her abdominal ultrasound scan revealed a 1.37×1.28 inches mixed echogenic solid mass at distal pancreas without main pancreatic duct dilation (figure 1). Abdominal MRI demonstrated a well-encapsulated mass of size 1.70×1.61 inches, hyposignal T1-weighted (T1W) and heterogeneous hypersignal T2W masses with cystic and solid component with enhancement solid component at the pancreatic tail, with no evidence of intra-abdominal metastasis (figure 2). Distal pancreatectomy was performed. No adjuvant therapy was given, nor was splenectomy performed. She has been followed up as an outpatient for 2 years and has remained healthy without any sign of local recurrent or distal metastasis. The mass had typical pathological features of solid pseudopapillary epithelial neoplasm (SPEN) (figures 3–5)—a combination of solid and cystic components with a cellular degenerative change