Argent, J.D., Fairhurst, J.J. and Clarke, N.M.P.
Subcutaneous granuloma annulare: four cases and review of the literature
Pediatric Radiology, 24, (7), . (PMID:7885793).
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Subcutaneous granuloma annulare (SGA) produces benign nodules in otherwise healthy children. The histology of the lesions may be indistinguishable from rheumatoid nodules. However, in children the lesion of SGA is not accompanied by connective-tissue disease. We report 4 patients with SGA. There were three girls and one boy ranging in age from 4 to 15 years. All the children presented with a solitary lesion on the lower limb. A cutaneous lesion was also present in case 4. In only one patient (case 4) was there a history of trauma. There was no relevant past medical history. Routine laboratory tests were normal (including ESR and auto-immune profile). A computed tomography (CT) scan with intravenous contrast was performed in all patients. The CT features were those of soft tissue masses of variable attenuation and enhancement with inconsistent infiltration into surrounding fat. There appear to be no specific CT features which distinguish this benign lesion from a more sinister one. Excisional biopsy was performed in all cases. In children, SGA should be included in the differential diagnosis of soft-tissue masses, particularly in the lower extremity.
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