Granuloma annulare

Changed by Amir Rezaee, 23 Oct 2018

Updates to Article Attributes

Body was changed:

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

Clinical presentation

Granuloma annulare most commonly seen in kids between 2-12 years old and usually it occurs in exterminates. One typical location is pretibial when the lesion is subcutaneous. It 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.

Ultrasound

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

MRI
  • T1: fill ill-defined subcutaneous mass, isointense to muscle
  • T2: slightly hypointense signal intensity compared with fat, may but may also show heterogeneous hyperintense lesionsignal
  • T1 C+: diffuse enhancement can be seeseen
  • -<p><strong>Granuloma annulare</strong> is a benign idiopathic inflammatory disorder of the <a href="/articles/dermis">dermis</a>, characterised by formation of dermal <a href="/articles/papules">papules </a>in young children.</p><h4>Clinical presentation</h4><p>Granuloma annulare has various clinical presentations:</p><ul>
  • +<p><strong>Granuloma annulare</strong> is a benign idiopathic inflammatory disorder of the <a href="/articles/dermis">dermis</a>, characterised by formation of dermal <a href="/articles/papules">papules </a>in young children.</p><h4>Clinical presentation</h4><p>Granuloma annulare most commonly seen in kids between 2-12 years old and usually it occurs in exterminates. One typical location is pretibial when the lesion is subcutaneous. It has various clinical presentations:</p><ul>
  • -<strong>T1:</strong> fill-defined subcutaneous mass, isointense to muscle</li>
  • +<strong>T1:</strong> ill-defined subcutaneous mass, isointense to muscle</li>
  • -<strong>T2:</strong> slightly hypointense signal intensity compared with fat, may show heterogeneous hyperintense lesion</li>
  • +<strong>T2:</strong> slightly hypointense signal intensity compared with fat, but may also show heterogeneous hyperintense signal</li>
  • -<strong>T1 C+:</strong> diffuse enhancement can be see</li>
  • +<strong>T1 C+:</strong> diffuse enhancement can be seen</li>

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