Momentarily stuck in the foramen ovale.

An 80-year-old woman was admitted for a diagnosis of severe pulmonary embolism. A large serpentine thrombus stuck in a patent foramen ovale (PFO) completely resolved without the patient experiencing any manifestation. The right renal artery was the final destination. Thromboaspiration was unsuccessful. Three months later, the patient was diagnosed with a malignant melanoma and metastatic dissemination.