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Image Number 715 (Dermatomyositis)

Photosensitive distribution

Diagnosis: Dermatomyositis

Site: Arm,forearm

Sex: M

Age: 60

Type: Clinical

Description: Erosion with calcium extruding

Submitted by: Ted Rosen

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Differential Diagnosis

History: 60 year-old male who suddenly developed weakness (could not get up out of chair or climb stairs) and skin rash. Note color of photo-accentuated rash on chest, typical of DM. Also had typical papules over the knuckles, posterior nailfold erythema, and dystropic cuticles - alltypical of DM. Finally, one focus of calcinosis cutis, actively spitting out calcium spicules. Elevated CPK and aldolase. Work-up for internal malignancy underway.

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