Cutaneous Involvement in Plasma Cell Myeloma.
Am J Clin Pathol
; 155(1): 106-116, 2021 01 04.
Article
em En
| MEDLINE
| ID: mdl-32885235
ABSTRACT
OBJECTIVES:
Plasma cell myeloma (PCM) involving skin is rare and occurs in 1% to 4% of patients with PCM. We evaluated the clinicopathologic features, cytogenetic findings and clinical follow-up in a series of PCM cases with cutaneous involvement.METHODS:
Cases of PCM with cutaneous involvement were retrospectively reviewed with clinical data.RESULTS:
Skin involvement in PCM occurred in older individuals (mean, 75 years) and was more frequent in men (7/10 patients). All cases showed bone marrow involvement preceding the cutaneous lesions. Histopathologically, the infiltrate was plasmacytic (n = 5) or primitive or plasmablastic (n = 4), and 1 case showed predominantly lymphoplasmacytic features with cyclin D1 immunoreactivity and CCND1 gene rearrangement. Concurrent amyloid deposition was seen in one biopsy, and another case demonstrated coexisting squamous cell carcinoma. The most common immunophenotype was CD138+, CD20-, and CD56+ with light chain restriction. Cytogenetic analysis (available for 7 cases) showed multiple hyperdiploid abnormalities. Follow-up was available for 8 cases (mean, 42 months; range, 11-156 months) and showed short-term disease-related death in 7 of 8 patients.CONCLUSIONS:
Cutaneous involvement in PCM demonstrates a diverse cytomorphologic spectrum with plasmacytic, plasmablastic, or lymphoplasmacytic features and may show concurrent amyloid deposition or neoplasms such as squamous cell carcinoma. Cutaneous involvement typically occurs late in the course of the disease and likely portends poor outcome.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Plasmócitos
/
Pele
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Medula Óssea
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Mieloma Múltiplo
Tipo de estudo:
Observational_studies
Limite:
Aged
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Aged80
/
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Am J Clin Pathol
Ano de publicação:
2021
Tipo de documento:
Article