Case report describes lymph node metastases and skin ulceration in encapsulated papillary carcinoma, suggesting indolent nature even at advanced stages.
Encapsulated papillary carcinoma (EPC) is an invasive carcinoma which shows papillary architecture within a thickened fibrous capsule. Multiple studies have shown that this tumor follows an indolent course with excellent prognosis, and as such, it is recommended that it be staged as in situ lesions. It is an uncommonly encountered tumor most often diagnosed in postmenopausal females. As breast cancer in males is overall rare, available data on diagnosis, management, and outcomes of EPC in males is limited. Typically, cases of EPC that present with advanced stage and/or lymph node metastases show an associated invasive process. We present a case of pure EPC in a male patient with associated skin ulceration and positive lymph nodes, leading to a final stage of ypT4bN1a. The present report underscores the indolent nature of EPC, even when diagnosed at an advanced stage.
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Glassheim et al. (2025) studied this question.
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