Camila Peña O, Ximena Valladares T, Ana María Gray H, María Elena Cabrera C.
Cutaneous involvement in multiple myeloma (MM) is extremely rare. It may correspond to plasmocytomas, secondary amyloidosis, paraneoplastic syndromes or drug reactions. We report a 75-year-old female with skin lesions, corresponding to extramedullary plasmacytomas (EPs), as a manifestation of MM progression. Most EPs appear in the upper airway and gastrointestinal tract, but have also been described in the genitourinary tract, lung, kidney, thyroid and in 2% of cases, in the skin. Cutaneous lesions are generally associated with terminal stages of the disease and a poor prognosis.
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