A 40-year-old woman presents with a lemon-yellow,waxy pallor and a red,beefy tongue.She is extremely fatigued and is having difficulty getting up in the morning and getting through the day.Antiparietal cell antibodies are found in her serum.This woman most likely has:

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The presentation of lemon-yellow, waxy pallor, red beefy tongue, and extreme fatigue suggests pernicious anemia, which is caused by a deficiency of vitamin B12 due to the absence of intrinsic factor produced by the parietal cells in the stomach. The presence of antiparietal cell antibodies in the serum is indicative of an autoimmune etiology for this condition. Graves disease is a thyroid disorder and presents with hyperthyroidism symptoms, ulcerative colitis is an inflammatory bowel disease that typically presents with diarrhea and abdominal pain, and type 1 diabetes is characterized by high blood glucose levels and symptoms such as thirst, frequent urination, and weight loss. None of these conditions are consistent with the given clinical presentation.

A 40-Year-Old Woman Presents with a Lemon-Yellow,waxy Pallor and a Red,beefy