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Image Number 1440 (Shagreen plaque)

 
Morphology:
Plaque

Diagnosis: Shagreen plaque

Site: Back

Sex: M

Age: 12

Type:

Description: Knobby skin.

Submitted by: Nameer Al-Sudany

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Differential Diagnosis

History: Shagreen plaques are collagenomas (connective tissue nevi composed entirely of collagen) occur in 40% of patients with tuberous sclerosis. They usually develop in the first decade of life. The plaques are found on the trunk, most commonly on the lumbosacml area and their size vary from 1 to 8 cm in diameter.

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