Pneumoblastome de l’adulte: rapport d’un nouveau cas et revue de la litterature

Pulmonary blastoma is a rare tumor which has been mainly reported in children. It accounts for 0.25-0.5% of all pulmonary tumors, with a very serious prognosis. Histologically, it is a tumor composed of two components: an epithelial component and a mesenchymal component. Clinically, it usually manifests as chest pain, cough, hemoptysis and dyspnea, but it is asymptomatic in approximately 40% of cases. We report the case of a 25 year old woman, with no previous medical history, who complained of dyspnoea, cough and left basithoracic pain. Radiological evaluation showed large basithoracic mass in the left lung. A biopsy was performed which only showed necrotic material. The surgical specimen was largely necrotic. The viable tissue was examined with the miroscope which showed biphasic pattern composed of malignant epithelial tissue associated with malignant mesenchymal tissue, typical of biphasic pneumoblastoma. The patient underwent chemotherapy and radiation therapy. Follow-up examination showed a recurrence, thus the patient underwent second line chemotherapy.