Blastic plasmacytoid dendritic cell neoplasm: an early presentation.

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.

Efeito do óleo de copaíba associado ao microagulhamento na pele de ratos: um estudo comparativo / Effect of copaiba oil associated with microneedling on the skin of rats: a comparative study

Introdução: O microagulhamento é técnica cuja finalidade é o estímulo do colágeno, bem como de drug delivery. O óleo de copaíba apresenta efeitos cicatrizantes e anti-inflamatórios que já foram demonstrados em vários modelos animais. Objetivo: Avaliar o efeito do óleo de copaíba associado ao microagulhamento na pele de ratos. Métodos: Foram utilizados 30 ratos distribuídos em seis grupos com cinco animais cada, submetidos a: microagulhamento isolado, microagulhamento associado a óleo mineral e microagulhamento associado a óleo de copaíba. Foram realizadas biópsias em todos os animais 14 dias e 30 dias após. Os parâmetros avaliados foram presença de colágeno, fibroblastos e vasos, classificada em ausente (0), leve (1), moderada (2) ou intensa (3). Resultados: Houve diferença estatisticamente significante entre os grupos em relação ao colágeno com 14 (p = 0,0091) e 30 dias (p = 0,0357) e fibroblastos com 30 dias (p = 0,0357). O grupo que utilizou microagulhamento e óleo de copaíba, apresentou, após 30 dias, maior produção de colágeno e de fibroblastos. Conclusões: o óleo de copaíba associado ao microagulhamento foi capaz de estimular maior produção de colágeno e de fibroblastos na pele de ratos.

Introduction: Microneedling is a technique aiming at stimulating the production of collagen as well as serving as drug delivery. Copaiba oil has healing and anti-inflammatory effects that have already been demonstrated in several animal models. Objective: To evaluate the effect of copaiba oil associated with microneedle removal on the skin of rats. Methods: Thirty rats were distributed in six groups of five animals each, subsequently undergoing: isolated microneedling, microneedling associated to mineral oil, and microneedling associated with copaiba oil. Biopsies were carried out in all animals at 14 and 30 days after the procedure. The parameters evaluated were: presence of collagen, fibroblasts and vessels, according to the following ratings: absence (0), mild (1), moderated (2) or intense (3). Results: There was a statistically significant difference between the groups regarding the production of collagen at 14 days (p = 0.0091) and 30 days (p = 0.0357); and fibroblasts at 30 days (p = 0.0357). the group that used microneedling and copaiba oil, presented, after 30 days, a greater production of collagen and fibroblasts. Conclusions: Copaiba oil associated with microneedling was capable of stimulating a greater production of collagen and fibroblasts in the skin of rats.