A Rare Case of Pulmonary Artery Sarcoma.

Pulmonary artery sarcoma (PAS) is a rare and aggressive mesenchymal tumor with an overall poor prognosis1-5. Due to similar clinical and radiologic findings, PAS is often misdiagnosed as a pulmonary embolism (PE) frequently leading to prolonged anticoagulation therapy, which delays the correct diagnosis 1-3. By presenting this clinical case our objective is to emphasize characteristic CT findings that favour a neoplastic origin of a pulmonary intravascular filling defect.

Paediatric Mediastinal Lipoblastoma.

Lipoblastoma should be considered in the differential diagnosis of painful rapidly growing fatty mass within the mediastinum in infants or young children under three years old.