Small cell neuroendocrine carcinoma: a case study in gynecologic cytopathology

• Autor(a) principal: Machado, Bruno Gomes
• Data de Publicação: 2015
• Outros Autores: Antunes, Luís, Mendonça, Paula
• Tipo de documento: Artigo
• Idioma: eng; por
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://doi.org/10.26537/citotech.v0i1.491
• topic: Colpocytology;; Small Cell Neuroendocrine Carcinoma; Colpocitologia;; Carcinoma Neuroendócrino de Pequenas Células

The present study shows the case of a 62 years old woman, whose only clinical data was a suspected cervical sarcoma. A liquid-based cytology and biopsies from the cervix and the endometrium were done and sent for diagnostic laboratory. The cytology showed numerous groups of a variable number of monotonous, small and round cells, having scarce cytoplasm in a diathesis background. The nuclei featured molding, hyperchromasia, “salt-and-pepper” chromatin and no nucleoli. Similar observations could be found with the biopsies, where atypical gland-like groups were also detected. This neoplasia showed positive immunostaining for neuron specific enolase, synaptophysin and cytokeratin (AE1/AE3 clone antibodies), and a proliferative activity demonstrated by the nuclear marker Ki67/Mib1 immunorreactivity. The cytological, histological and imunohistochemical findings were consistent with the diagnosis of a small cell neuroendocrine carcinoma. Of all the cervical tumors, this sort of malignancy is one of the rarest and has a very aggressive behavior, with poor prognosis and without effective treatment. Its cause may be related to the Human Papillomavirus infection, but this still remains in study.