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Image Number 155 (Granuloma annulare)

 
Morphology:
Annular

Diagnosis: Granuloma annulare

Site: Thigh

Sex: F

Age: 65

Type: Clinical

Description: Annular plaques with peripheral papules

Submitted by: Ian McColl

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Differential Diagnosis

History: Granuloma annulare will sometimes occur in a more diffuse form with large annular lesions particularly on the thighs.However there are always papules in the advancing edge and no scaling as this is a dermal process.Sarcoidosis can be difficult to exclude clinically.In a ringworm infection there would be scale in the advancing edge.

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