Immunologic aberration has been implicated in all

ATI LPN

ATI LPN Test Bank

Immunologic aberration has been implicated in all but one of the following disease:

A. rheumatoid arthritis B. ulcerative colitis C. diabetes mellitus D. thyroiditis

Correct Answer: C

Rationale: Type 2 diabetes mellitus is primarily metabolic, not autoimmune, unlike the others.

Myeloid metaplasia

A. eosinophilia B. Kayser-Fleischer ring C. cholelithiasis D. thrombocytopenia

Correct Answer: D

Rationale: Myeloid metaplasia (myelofibrosis) features thrombocytopenia from marrow replacement.

One of the following thyroid carcinomas is associated with the production of thyrocalcitonin and pheochromocytoma:

A. papillary B. medullary C. follicular D. hÃ¼rthle cell

Correct Answer: B

Rationale: Medullary thyroid carcinoma produces calcitonin and is linked to pheochromocytoma in MEN2 syndromes.

All the following would be characteristic in this patient except:

A. elevated serum cholesterol B. normochromic anemia C. serum sodium usually normal D. urinary gonadotrophins are elevated

Correct Answer: D

Rationale: Sheehan's syndrome causes low gonadotropins (hypogonadism), not elevated levels.

Steroids

A. poor response to insulin at fat cell B. destruction of endogenous insulin C. inhibition of insulin release D. increased hepatic gluconeogensis

Correct Answer: D

Rationale: Steroids increase gluconeogenesis, leading to hyperglycemia.

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