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Serum levels of which one of the following laboratory tests would be expected to be most abnormal in this patient? A) 17-hydroxyprogesterone B) Angiotensin-converting enzyme C) Anti-tissue transglutaminase antibody D) Prolactin E) Vitamin B6

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? Lupus Pernio
Plaque of Sarcoidosis on the face. B) Angiotensin-converting enzyme  Elevated calcium levels, in particular, are a distinctive marker of sarcoidosis. Blood tests are able to also detect levels of inflammatory cells such as angiotensin-converting enzyme (ACE) REF: Cutaneous Sarcoidosis: A Dermatologic Masquerader RAJANI KATTA, M.D., Baylor College of Medicine, Houston, Texas Am Fam Physician. 2002 Apr 15;65(8):1581-1585.
C- Anti - tissue,trans glutaminase antibody. This test is done for celiac disease and this picture looks like dermatitis herpetiformis , a cutaneous manifestation of celiac disease
B.this is lupus pernio,found in sarcoidosis.
C. A.T.T antibody. A tissue transglutaminase IgA) test is used to help doctors diagnose celiac disease. Celiac disease is an autoimmune disorder in which the immune system mistakenly thinks that gluten — a protein in wheat, barley, rye, and oats — is a foreign invader.
Anti tissue transglutimase antibody. Dermatitis herpetiform. Genetically gluten sensitivity, deposit of IGA in the skin ,triggers immune reaction.Shows external manifestation of abnormal immune response to gluten.
Lupus Pernio found in case of Sarcoidosis.
C) Anti-TTG antibody
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