Association of Mondor's disease with oral contraceptive pills.

Mondor's disease (MD) is a rare disease characterised by thrombophlebitis of superficial veins in the body. We describe a case of a 28-year-old woman with a painful cord-like lesion of the right breast (3 cm) overlying the right upper quadrant. The patient was recently prescribed metformin and oral contraceptive pills for symptomatic polycystic ovarian syndrome. Right breast ultrasound showed a tubular anechoic structure with several areas of narrowing, resembling a beaded appearance. The patient was diagnosed with MD associated with use of oral contraceptive pills. We recommended the patient to discontinue oral contraceptive because discontinuation of the causative drug is important. The patient was started on topical non-steroidal anti-inflammatory drugs and a therapeutic dose of enoxaparin. The patient showed significant clinical improvement after 5 days. At 6-week outpatient follow-up, complete resolution of the disease was noted. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.