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Dermatology27 papers

Mastocytoma

Last edited: 4/16/2026

Overview

Mastocytoma is a localized proliferation of mast cells, typically presenting as solitary skin lesions, often in pediatric patients. Infants with mastocytoma may exhibit recurrent blistering, particularly on the scalp 1.

Diagnosis

  • Clinical Presentation: Recurrent blistering, especially on the scalp in infants 1.
  • Histopathology: Definitive diagnosis through skin biopsy showing infiltration of mast cells 1.
  • Imaging: Not typically required for solitary lesions but may be considered for atypical presentations 1.
  • Laboratory Tests: Serum tryptase levels may be elevated but are not diagnostic alone 1.
  • Management

  • First-Line Treatment: Surgical excision is often curative for solitary mastocytomas 1.
  • Adjunctive Treatments:
  • - Antihistamines: For symptomatic relief of pruritus or blistering 1. - Corticosteroids: May be used for severe symptoms or inflammation 1.

    Special Populations

  • Pediatrics: Recurrent blistering in infants should raise suspicion for mastocytoma 1.
  • Key Recommendations

  • Perform skin biopsy for definitive diagnosis in cases of recurrent blistering lesions, particularly in infants 1 (Evidence: Moderate).
  • Consider surgical excision as the primary treatment for solitary mastocytomas to achieve cure 1 (Evidence: Expert opinion).
  • Utilize antihistamines and corticosteroids symptomatically for managing pruritus and blistering 1 (Evidence: Expert opinion).
  • References

    1 Munro CS, Farr PM. Solitary mastocytoma causing recurrent blistering in infancy. Archives of disease in childhood 1992. link

    Original source

    1. [1]
      Solitary mastocytoma causing recurrent blistering in infancy.Munro CS, Farr PM Archives of disease in childhood (1992)

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