Rare Pancreatic Tumor Shows Unique Calcification Patterns

Case report highlights diagnostic value of integrating imaging, histopathology, and immunohistochemistry for solid pseudopapillary neoplasm.

Published on Mar. 7, 2026

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A new case report published in Oncoscience describes a 31-year-old woman who presented with a very large (≈12.5 × 9 × 8 cm), lobulated pancreatic-head mass with solid, cystic, and unusually coarse calcified components. Histology and immunohistochemistry confirmed a diagnosis of solid pseudopapillary neoplasm (SPN), a rare (under ~3% of exocrine pancreatic tumors) tumor that predominantly affects young women and generally carries an excellent prognosis after complete surgical resection.

Why it matters

This case underscores the diagnostic value of integrating imaging, histopathology, and immunohistochemistry to accurately identify SPN, which can mimic other pancreatic neoplasms. While extensive calcification is uncommon in SPN, it should be recognized as part of the tumor's spectrum rather than a marker of aggressive behavior.

The details

The patient underwent a cephalic pancreaticoduodenectomy (Whipple procedure), and the postoperative course was uneventful. Gross pathology demonstrated cystic degeneration, hemorrhage, and coarse calcifications, while microscopy revealed classic solid and pseudopapillary architecture with low mitotic activity. The report reinforces surgical resection as the treatment of choice and recommends multidisciplinary evaluation and long-term follow-up to monitor for the rare cases that recur.

  • The case report was published on February 7, 2026.
  • The patient remained recurrence-free at five months of follow-up.

The players

Faten Limaiem

The corresponding author of the case report and is affiliated with Hospital Mongi Slim La Marsa in La Marsa, Tunisia.

Mohamed Hajri

A co-author of the case report.

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What’s next

The authors recommend multidisciplinary evaluation and long-term follow-up (at least five years) to monitor for the rare cases of solid pseudopapillary neoplasm that recur.

The takeaway

This case highlights the importance of integrating imaging, histopathology, and immunohistochemistry to accurately diagnose solid pseudopapillary neoplasm, a rare pancreatic tumor that can mimic other neoplasms. Despite its large size and extensive calcification, complete surgical resection remains the definitive treatment and yields an excellent prognosis.