Sinonasal and skull base phosphaturic mesenchymal tumours: a case series and narrative review - Summary - MDSpire

Sinonasal and skull base phosphaturic mesenchymal tumours: a case series and narrative review

  • By

  • Genwang Pei

  • Rongfeng Lin

  • Guangqi Li

  • Yinyan Lai

  • June 18, 2026

  • 0 min

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Objective:

To summarize clinical experience, identify critical diagnostic indicators for sinonasal/skull base PMTs, and analyze current challenges and potential improvements, emphasizing the significance of these indicators in clinical practice.

Key Findings:
  • PMTs are rare in the sinonasal region and skull base, leading to high rates of missed and misdiagnosis, which can significantly affect patient outcomes.
  • Persistent hypophosphataemia is a vital diagnostic indicator that should be monitored closely.
  • PET imaging showed somatostatin receptor positivity in patients, indicating its potential role in diagnosis.
  • Immunohistochemistry revealed SSTR2+/SATB2+ expression in tumours, which may aid in distinguishing PMTs from other lesions.
Interpretation:

The study highlights the diagnostic challenges associated with sinonasal/skull base PMTs due to their atypical clinical manifestations and obscured locations, underscoring the need for heightened clinical awareness.

Limitations:
  • Small sample size of only 5 patients limits the generalizability of the findings.
  • Retrospective nature may introduce bias in data collection and interpretation.
  • Variability in diagnostic delay and clinical presentation may affect the reliability of the conclusions.
Conclusion:

The findings emphasize the need for increased awareness and improved diagnostic strategies for sinonasal/skull base PMTs to reduce misdiagnosis, ultimately improving patient outcomes.

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