Granuloma annulare
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IsGranuloma annulare is a benign idiopathic inflammatory disorder of the dermischaracterized, characterised by formation of dermal papules in young children.
Clinical presentation
it hasGranuloma annulare has various clinical presentation, four forms can be distinguished presentations:
-
Cutaneousthree cutaneous forms:-
erythematous
, perforating and generalized -
Subcutaneousperforating - generalised
-
erythematous
-
one subcutaneous form: presenting as soft tissue mass
.
Radiographic features
Radiograph:Plain radiograph
HaveThese have very little value, only an. The only manifestation is non-specific increased density in the subcutaneous compartment without involvement of bone involvement or mineralisation.
Ultrasonography:
Ultrasound
Shows ill- defined solid mass that is hypoechoic to surrounding fat. It excludes a vascular of cystic lesion.
MRI
T1WI
-
T1:
Illdefined subcutaneousfill-defined subcutaneous mass, isointense to muscle,T2WI -
T2: slightly
hypo intensehypointense signal intensity compared with fat, may show heterogeneoushyper intensehyperintense lesion.After intravenous contrast injection a diffuse -
T1C+: diffuse enhancement can be see
.
-<p>Is a benign idiopathic inflammatory disorder of the <a title="dermis" href="/articles/dermis">dermis </a>characterized by formation of dermal <a title="papules" href="/articles/papules">papules </a>in young children.</p><h5>Clinical presentation</h5><p>it has various clinical presentation, four forms can be distinguished :</p><ul>-<li>Cutaneous forms: <a title="erythematous" href="/articles/erythematous">erythematous</a>, perforating and generalized</li>-<li>Subcutaneous form: presenting as soft tissue mass.</li>-</ul><h5>Radiographic features</h5><h6>Radiograph:</h6><p>Have little value, only an increased density in the subcutaneous compartment without involvement of bone involvement or mineralisation.</p><h6>Ultrasonography:</h6><p>Shows ill- defined solid mass that is hypoechoic to surrounding fat. It excludes a vascular of cystic lesion.</p><h6>MRI</h6><p>T1WI: Illdefined subcutaneous mass, isointense to muscle, </p><p>T2WI: slightly hypo intense signal intensity compared with fat, may show heterogeneous hyper intense lesion.</p><p>After intravenous contrast injection a diffuse enhancement can be see.</p><p> </p>- +<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>
- +<li>three cutaneous forms<ul>
- +<li><a href="/articles/erythematous">erythematous</a></li>
- +<li>perforating</li>
- +<li>generalised</li>
- +</ul>
- +</li>
- +<li>one subcutaneous form: presenting as soft tissue mass</li>
- +</ul><h4>Radiographic features</h4><h6>Plain radiograph</h6><p>These have very little value. The only manifestation is non-specific increased density in the subcutaneous compartment without involvement of bone involvement or mineralisation.</p><h5>Ultrasound</h5><p>Shows ill- defined solid mass that is hypoechoic to surrounding fat. It excludes a vascular of cystic lesion.</p><h5>MRI</h5><ul>
- +<li>
- +<strong>T1</strong>: fill-defined subcutaneous mass, isointense to muscle</li>
- +<li>
- +<strong>T2</strong>: slightly hypointense signal intensity compared with fat, may show heterogeneous hyperintense lesion</li>
- +<li>
- +<strong>T1C+:</strong> diffuse enhancement can be see</li>
- +</ul>
References changed:
- 1. Shehan JM, El-Azhary RA. Magnetic resonance imaging features of subcutaneous granuloma annulare. Pediatr Dermatol. 2005;22 (4): 377-8. <a href="http://dx.doi.org/10.1111/j.1525-1470.2005.22427.x">doi:10.1111/j.1525-1470.2005.22427.x</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/16060888">Pubmed citation</a><span class="auto"></span>
- Shehan JM, El-Azhary RA.Magnetic resonance imaging features of subcutaneous granuloma annulare. Pediatr Dermatol.2005 Jul-Aug;22(4):377-8.
Tags changed:
- cases
- refs
- dermatology
- skin
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