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[Systemic mastocytosis and bone impact].

Marie Vaucher¹, Elena Gonzalez Rodriguez², Anna Efthymiou³

¹Service de médecine interne, HFR Fribourg, Hôpital cantonal, 1700 Fribourg.

Revue Medicale Suisse

|March 23, 2023

Summary

This summary is machine-generated.

Systemic mastocytosis involves abnormal mast cell proliferation, affecting organs beyond the skin. Bone complications, including osteoporosis and mixed osteolysis/osteosclerosis, present diagnostic and therapeutic challenges.

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Area of Science:

Hematology
Oncology
Bone Biology

Context:

Systemic mastocytosis (SM) is a rare disorder defined by aberrant mast cell proliferation in extracutaneous sites.
The 2016 WHO classification distinguishes SM as a unique subgroup, separate from myeloproliferative neoplasms.
Diagnosis typically occurs around age 60, affecting all genders, with frequent, often asymptomatic, bone involvement.

Purpose:

To highlight the complex nature of bone involvement in systemic mastocytosis.
To underscore the diagnostic and therapeutic challenges posed by heterogeneous bone lesions in SM.

Summary:

Bone damage in SM is common, manifesting as osteoporosis or fragility in ~20% of patients.
Mast cell proliferation uniquely causes heterogeneous bone lesions, simultaneously exhibiting osteolysis and osteosclerosis.
This complexity complicates the interpretation of bone density and biomarker data, posing therapeutic dilemmas.

Impact:

Improved understanding of SM's skeletal manifestations.
Potential for refined diagnostic strategies for bone complications.
Guidance for developing targeted therapeutic approaches for challenging bone disease in SM.