Review the following clinical presentations of patients with severe malabsorption or those receiving long-term parenteral nutrition. Match each clinical vignette to the specific underlying trace mineral deficiency it describes.
- A 48-year-old man who underwent bariatric surgery two years ago presents with progressive spastic paraparesis, sensory ataxia, and a complete blood count revealing hypochromic microcytic anemia with neutropenia. Vitamin B12 levels are normal.Copper deficiency
- A 65-year-old man with Crohn disease and extensive small bowel resections presents with a new vesicular and crusting rash around his mouth, worsening alopecia, persistent diarrhea, and a diminished sense of taste.Zinc deficiency
- A 42-year-old woman with severe anorexia nervosa on prolonged total parenteral nutrition without trace mineral supplementation develops sudden-onset dilated cardiomyopathy, proximal muscle weakness, and elevated creatine kinase.Selenium deficiency
- A 52-year-old woman with short bowel syndrome on long-term total parenteral nutrition develops new-onset, refractory hyperglycemia requiring increasing doses of insulin, accompanied by weight loss and a mild sensory neuropathy.Chromium deficiency
Answer
Vignette 1 matches with Copper deficiency; Vignette 2 matches with Zinc deficiency; Vignette 3 matches with Selenium deficiency; Vignette 4 matches with Chromium deficiency.
Each clinical syndrome specifically maps to the pathognomonic findings of isolated trace mineral deficiencies that occur predominantly in the context of prolonged parenteral nutrition or severe gastrointestinal malabsorption.
Step-by-Step Solution
Key Concept
Trace element deficiencies in the setting of severe malabsorption or long-term parenteral nutrition present with highly specific, identifiable clinical syndromes that require targeted recognition and replacement.