RESUMO
BACKGROUND: Proliferating trichilemmal cyst (PTC) is a rare adnexal tumor, generally benign, primarily sitting on the scalp of elderly women. About fifty cases are reported in the literature. Herein, we describe another one particularly aggressive. OBSERVATION: A 70-year-old woman had been showing an increase in the size of an occipital cyst for 6years. A cephalic scan and wide surgical excision had confirmed the diagnosis of a malignant PTC. Four months later, the tumor recurred with regional metastases and intracerebral invasion. DISCUSSION: Through our case and based on the literature analyzing, we discuss the nosology of PTC and its clinical and histological distinctive elements. CONCLUSION: Large studies are needed to better understand the specificities of PTC, specially malignant form, but it remains difficult because of its rarity.
Assuntos
Carcinoma/cirurgia , Cisto Epidérmico/cirurgia , Neoplasias Cutâneas/cirurgia , Idoso , Carcinoma/patologia , Transformação Celular Neoplásica , Cisto Epidérmico/patologia , Feminino , Humanos , Invasividade Neoplásica , Lobo Occipital , Prognóstico , Couro Cabeludo/patologia , Neoplasias Cutâneas/patologiaRESUMO
Pleuropericardial cysts of the mediastinum are rare lesions, usually congenital but exceptionally acquired. They are often asymptomatic, but complications can occur. We report below the case of a 35-year-old man who presented with an acquired right-sided para-tracheal mesothelial cyst that ruptured into the pericardium and was responsible for clinical tamponade. Although the majority of mesothelial cysts are asymptomatic, only a strict clinical and radiological follow-up can provide an indication for surgical resection. This should be reserved for symptomatic patients or for those facing an uncertain diagnosis.
