[Calcified intertrigo, a rare cause of cutaneous calcinosis].
BACKGROUND
Calcinosis cutis is classically described in patients presenting chronic renal failure with secondary hyperparathyroidism. There are three clinical types described in the literature: cutaneous necrosis (secondary to vascular calcification), panniculitis with calcification of the adipose tissue and necrosis of the skin and dermo-hypodermic calcinosis without necrosis usually called metastatic calcinosis. The latter can affect all tissues but skin involvement is rare.


METHODS
A case of calcinosis cutis is presented in a 50 years old woman with moderate secondary hyperparathyroidism and chronic renal failure caused by renal amyloidosis. She was referred by the renal unit to our service for erythematous, woody-hard, infiltrated plaques with petechial purpura satellite lesions, involving the flexural areas, that appeared within a few weeks.


CONCLUSIONS
This observation is original by the topography of the cutaneous lesions the involvement of the fexural areas is unusual and by the histologic aspect of pseudoxanthome elastic-like. We must notice that the hyperparathyroidism had always been very moderate (normal parathormonemia) compared to the rapid development of an important dermic calcinosis.
Benkalfate
L
L
Service de Dermatologie, CHU Pontchaillou, Rennes.
Zein
K
K
le Gall
F
F
Chevrant-Breton
J
J
Rivalan
J
J
le Pogamp
P
P
D000368:Aged; D000686:Amyloidosis / Q000150:complications; D002114:Calcinosis / Q000209:etiology* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000150:complications; D007402:Intertrigo / Q000150:complications / Q000209:etiology* / Q000473:pathology; D007676:Kidney Failure, Chronic / Q000150:complications*; D015434:Panniculitis / Q000175:diagnosis; D012871:Skin Diseases / Q000150:complications / Q000209:etiology* / Q000473:pathology
Intertrigo calcifie une forme rare de calcinose cutanee.