How often does imaging miss endometriosis?

Imaging misses endometriosis more often than most patients are led to believe. Ultrasound and MRI can be very helpful for suggesting endometriosis and for mapping certain patterns of disease (like ovarian endometriomas or some forms of deep disease), but a “normal” scan does not rule endometriosis out—especially superficial peritoneal disease, subtle lesions, or disease hidden in difficult-to-visualize locations.

How often it’s missed depends on what type of endometriosis you have, where it is, the scan protocol, and—crucially—the experience of the person performing and interpreting the study. It’s also common for one modality to see something the other doesn’t, because each has different blind spots (for example, bowel gas can limit MRI in some situations, while ultrasound may miss certain deep sites). That’s why our diagnostic process doesn’t hinge on imaging alone; we combine your symptom story, exam findings, and expert imaging interpretation to decide what’s most likely and what the next step should be.

If your symptoms persist despite “negative” imaging, that isn’t a dead end—it’s a data point. Reach out to schedule a consultation so our team can review your history and prior imaging, consider other conditions that can mimic or coexist with endometriosis, and determine whether advanced imaging, further evaluation, or surgical assessment makes sense for your goals.