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==Skin disease and systemic conditions== | ==Skin disease and systemic conditions== | ||
===Acanthosis nigricans=== | |||
Associated with: [[diabetes mellitus]],<ref>URL: [http://www.emedicine.com/derm/topic1.htm http://www.emedicine.com/derm/topic1.htm], URL: [http://dermatlas.med.jhmi.edu/derm/indexDisplay.cfm?ImageID=1943559504].</ref> malignancy.<ref name=Ref_PCPBoD8|596>{{Ref PCPBoD8|596}}</ref> | |||
====Microscopic==== | |||
Features ''BPH'':<ref name=Ref_PCPBoD8|596>{{Ref PCPBoD8|596}}</ref> | |||
*Basal cell hyperpigmentation. | |||
*Prominent rete ridges. | |||
*Hyperkeratosis. | |||
===Others=== | |||
*[[Dermatitis herpetiformis]]: gluten enteropathy ([[celiac disease]]), [[thyroid]] disease, intestinal [[lymphoma]].<ref>TN07 D23.</ref> | *[[Dermatitis herpetiformis]]: gluten enteropathy ([[celiac disease]]), [[thyroid]] disease, intestinal [[lymphoma]].<ref>TN07 D23.</ref> | ||
*[[Pemphigus vulgaris]]: [[thymoma]], myasthenia gravis, malignancy.<ref>TN07 D23.</ref> | *[[Pemphigus vulgaris]]: [[thymoma]], myasthenia gravis, malignancy.<ref>TN07 D23.</ref> |
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