We report the case of a 37 years old woman with a past history of a chondrosarcoma who was admitted to hospital for acute pulmonary hypertension which proved rapidly fatal; autopsy confirmed that the etiology was tumour microemboli rising from a single cardiac metastases from her chondrosarcoma. The originality of this case report lies in the origin of the microemboli and the way in which they presented as a recurrence of the cancer.