Tsang DS, Le LW, Kukreti V, Sun A. Treatment and outcomes for primary cutaneous extramedullary plasmacytoma: a case series.
ACTA ACUST UNITED AC 2016;
23:e630-e646. [PMID:
28050154 DOI:
10.3747/co.23.3288]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND
Primary cutaneous plasmacytoma (pcp) is a rare disease, with few studies to guide therapy. Our primary study objective was to define treatments used for pcp; a secondary objective was to describe outcomes of patients, including disease recurrence and death.
METHODS
An institutional cancer registry was used to identify cases for retrospective chart review. In a systematic review, treatments for, and outcomes of, all known cases of pcp were described.
RESULTS
Three eligible cases identified at our institution; each patient had a solitary pcp. The systematic review identified 66 patients. Radiotherapy was the most commonly used primary treatment modality (31% of all patients; 42% for patients with solitary lesions), followed by surgery (28% of all patients; 36% for patients with solitary lesions). Median survival for all patients was 10.4 years [95% ci: 4.3 years to not reached], with a trend toward a decreased risk of death with solitary lesions compared with multiple lesions (hazard ratio: 0.37; 95% ci: 0.13 to 1.08; p = 0.059). For patients with solitary lesions, the median and recurrence-free survivals were, respectively, 17.0 years (95% ci: 1.7 years to not reached) and 11.0 years (95% ci: 2 years to not reached); for patients with multiple lesions, they were 4.3 years (95% ci: 1.3 to not reached) and 1.4 years (95% ci: 0.6 years to not reached). Disease recurrence, including progression to multiple myeloma, was the most common cause of death.
CONCLUSIONS
Compared with patients having multiple pcp lesions, those presenting with a single pcp lesion might experience longer overall survival. Local therapy (radiation or surgery) is a reasonable curative treatment for a solitary pcp lesion.
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