Table 1.

Timeline of events.

Time	Event
10 years ago	The patient had a possible pulmonary embolism.
6 years ago	The patient ceased smoking tobacco.
1 year ago	The patient resumed smoking tobacco. PSA was less than 3 ng/mL.
13 to 19 months ago	The patient used over-the-counter testosterone supplements.
4 months ago	Colonoscopy found a benign polyp.
3 to 4 months ago	The patient started using over-the-counter diindolylmethane.
5 weeks ago	The patient presented to the Emergency Department and was thought to have right sciatica.
3 weeks ago	The patient presented to the Emergency Department and was thought to have costochondritis.
Day 0	A lower extremity venous Doppler study found deep venous thromboembolism in his right lower extremity. Computed tomography of the chest found bilateral pulmonary embolism with probable right middle lobe infarction. The patient was hospitalized and started on anticoagulation.
5 months later	A lower extremity venous Doppler study found chronic deep venous thromboembolism in his right lower extremity.