Saturday, November 19, 2016

Acanthosis Nigricans And Associated Medical Conditions.



You note the above skin disorder during a general medical evaluation. You explain to the patient they are at risk for the development of
A) Alzheimer’s disease
B) Tuberculosis
C) Diabetes mellitus
D) Graves’ disease
E) Melanoma

Answer And Discussion:

The answer is C. (Diabetes mellitus)

The condition shown in the picture is Acanthosis nigricans, a skin condition characterized by areas of dark, velvety discoloration in body folds and creases
Although the majority of cases of acanthosis nigricans are benign and associated with obesity, the disease can represent the onset of malignancy as well as a variety of conditions related to insulin resistance. Acanthosis nigricans has been reported in association with a number of malignancies, particular gastrointestinal cancers (e.g., gastric, hepatocellular), and lung cancer. The suspicion for malignancy increases in patients with extensive or rapidly progressive lesions, when there is mucous membrane involvement, or when there is prominent sole and palm disease. The common finding in all non malignancy-associated cases of acanthosis nigricans is insulin resistance. This explains the relationship between this skin disorder and diseases such as diabetes mellitus,
Cushing’s syndrome, and hypothyroidism (most likely due to weight gain and subsequent insulin resistance), and with obesity.

4 comments:

  1. Hi thanks for posting the info! I appreciate it and it is very helpful for my studies as well!

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