A 34-year-old man comes to the physician because of foul-smelling diarrhea, fatigue, and bloating for 6 months. During this time, he has had a 5-kg (11-lb) weight loss without a change in diet. He has type 1 diabetes mellitus that is well-controlled with insulin. Examination shows conjunctival pallor and inflammation of the corners of the mouth. The abdomen is soft, and there is diffuse tenderness to palpation with no guarding or rebound. Initial laboratory evaluation reveals microcytic anemia, hypoalbuminemia, normal magnesium level, and normal serum TSH concentration. The patient is found to have positive anti-tissue transglutaminase IgA antibodies. Which of the following sets of additional laboratory findings are most likely present in this patient?

Question

A 34-year-old man comes to the physician because of foul-smelling diarrhea, fatigue, and bloating for 6 months. During this time, he has had a 5-kg (11-lb) weight loss without a change in diet. He has type 1 diabetes mellitus that is well-controlled with insulin. Examination shows conjunctival pallor and inflammation of the corners of the mouth. The abdomen is soft, and there is diffuse tenderness to palpation with no guarding or rebound. Initial laboratory evaluation reveals microcytic anemia, hypoalbuminemia, normal magnesium level, and normal serum TSH concentration.  The patient is found to have positive anti-tissue transglutaminase IgA antibodies.  Which of the following sets of additional laboratory findings are most likely present in this patient?

Quizplus · Accepted Answer

Eductional Objective: Malabsorption caused by celiac disease can lead to vitamin D deficiency.  Patients have decreased serum phosphorus, increased serum parathyroid hormone (secondary hyperparathyroidism), and low (or normal) serum calcium.

A 34-Year-Old Man Comes to the Physician Because of Foul-Smelling