Necrobiosis Lipoidica Diabeticorum (NLD) and Pigmented Pretibial Patches (PPP) are characterized by their association with diabetes mellitus, by their pretibial predilection, and by vascular alterations compatible with diabetic microangiopathy. Despite differences in the gross and microscopic morphology, both may be considered part of a spectrum of cutaneous lesions for which the term diabetic dermangiopathy is suggested. Variants within this spectrum are reported, including 2 cases with widespread lesions of PPP, occurring in areas other than pretibial.
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BAUER et al. (1970) studied this question.
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