title: Subcutaneous beta2-microglobulin amyloid shoulder nodulesin a long-term hemodialysis patient.
abstract: beta2-Microglobulin accumulation with resultant tumor formation is a known albeit rare complication of long-term hemodialysis. Although these tumors may occur in various locations, subcutaneous shoulder nodules are very infrequent. We report a patient with end-stage kidney failure who had been on hemodialysis for 16 years and noted left shoulder nodules after initiation of hemodialysis; these nodules had slowly grown larger. Biopsy of one of these nodules revealed beta2-microglobulin amyloidosis by histopathology, Congo red stain, electron microscopy, and immunohistochemistry.
authors.affiliation: Department of Internal Medicine (Mendoza), Division of Nephrology (Fenves), Department of Pathology (Punar), and Department of Oncology (Stone), Baylor University Medical Center, Dallas, Texas.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Mendoza
authors.forename: Andrew Z
authors.initials: AZ
authors.lastname: Fenves
authors.forename: Metin
authors.initials: M
authors.lastname: Punar
authors.forename: Marvin J
authors.initials: MJ
authors.lastname: Stone
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