Granuloma annulare

Granuloma annulare is a benign idiopathic inflammatory disorder of the dermis, characterised by formation of dermal papules in young children.

Clinical presentation

Granuloma annulare has various clinical presentations:

  • three cutaneous forms
  • one subcutaneous form: presenting as soft tissue mass

Radiographic features

Plain radiograph

These have very little value. The only manifestation is non-specific increased density in the subcutaneous compartment without involvement of bone involvement or mineralisation.


Shows ill-defined solid mass that is hypoechoic to surrounding fat. It excludes a vascular of cystic lesion.

  • T1: fill-defined subcutaneous mass, isointense to muscle
  • T2: slightly hypointense signal intensity compared with fat, may show heterogeneous hyperintense lesion
  • T1 C+: diffuse enhancement can be see
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Article information

rID: 40034
Synonyms or Alternate Spellings:
  • Subcutaneous granuloma annulare

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