Severe enteropathy caused by α-heavy chain disease lacking detectable M-proteins

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Abstract

A 57-year-old Japanese man was admitted to our hospital with diarrhea, weight loss and malabsorption. Due to a high serum IgA level, we suspected α-heavy chain disease (α-HCD). However, no monoclonal IgA was detected on protein electrophoresis or immunofixation. Immunohistochemical staining of intestinal biopsy specimens showed proliferation of CD138+IgA+ cells, compatible with a diagnosis of α-HCD. Most α-HCD patients exhibit M-proteins in the serum on electrophoresis or immunoelectrophoresis; however, some patients lack detectable M-proteins, similar to our patient. Therefore, when α-HCD is suspected based on the clinical features, immunohistochemistry is required to make a diagnosis. © 2014 The Japanese Society of Internal Medicine.

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CITATION STYLE

APA

Kurimoto, M., Sonoki, T., Nakamura, Y., Yamamoto, Y., Maeda, Y., Kuriyama, K., … Nakakuma, H. (2014). Severe enteropathy caused by α-heavy chain disease lacking detectable M-proteins. Internal Medicine, 53(6), 581–585. https://doi.org/10.2169/internalmedicine.53.1625

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