ABSTRACT
A blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a cutaneous lymphoma derived from a plasmacytoid dendritic precursor cell that exhibits aggressive clinical behavior. Herein, we report a 46-year-old woman with a complaint of a painless nodule on the back, associated with pruritus. The nodule grew and new growths appeared over six months of evolution. The histopathological examination of one of the left upper limb lesions showed a dense lymphoid cell infiltrate with atypia in the superficial and deep dermis. Immunohistochemistry showed positivity for CD45, S-100 protein, CD123, and TCL 1. About two months after the initial evaluation, the patient was admitted to the Emergency Hospital of Marituba-PA with dyspnea. She progressed to cardiorespiratory arrest and death within 12 hours of admission. There is still no consensus for the treatment of BPDCN. Intensive therapy for acute leukemia can be useful, but allogeneic bone marrow transplantation has a greater chance of long-term survival.
Subject(s)
Dendritic Cells/pathology , Lymphoma/pathology , Skin Neoplasms/pathology , CD4 Antigens/metabolism , Fatal Outcome , Female , Humans , Interleukin-3 Receptor alpha Subunit/metabolism , Lymphoma/metabolism , Middle Aged , Proto-Oncogene Proteins/metabolism , S100 Proteins/metabolism , Skin Neoplasms/metabolismABSTRACT
O carcinoma de células escamosas cutâneo é resultante da proliferação maligna dos queratinócitos. Costuma surgir da evolução de lesões precursoras, mas pode crescer espontaneamente na pele normal ou cronicamente inflamada. O carcinoma de células escamosas invasivo corresponde à segunda forma mais comum de câncer da pele não melanoma e representa 20% de todas as neoplasias cutâneas. Este trabalho relata um caso clínico de carcinoma de células escamosas cutâneo, rapidamente progressivo e com metástases regionais, que mesmo com a ressecção completa e esvaziamento ganglionar, apresentou pouca resposta terapêutica e evoluiu a óbito.
Cutaneous squamous cell carcinoma (SCC) results from malignant proliferation of keratinocytes. It usually arises from the development of precursor lesions, however it may grow spontaneously on normal or chronically inflamed skin. Invasive SCC is the second most common type of non-melanoma skin cancer and accounts for 20% of all cutaneous neoplasms. The present paper reports a clinical case of cutaneous SCC, rapidly progressive and with regional metastases, which, even after complete resection of the tumor and regional lymph nodes, showed little therapeutic response and evolved to death.
