Can pathology be negative even if I have endometriosis?

Yes. A pathology report can come back “negative” even when endometriosis is present, and the most common reason is sampling—endometriosis lesions can be tiny, patchy, or hidden beneath a normal-looking surface, so a biopsy may miss the true focus of disease. Lesions also vary in appearance and depth (including disease that sits under the peritoneum or within organs), which can make what the surgeon sees and what the pathologist receives two different stories.

A negative pathology result doesn’t automatically mean your symptoms aren’t real or that endometriosis has been ruled out; it often means we need to interpret the result in context of your history, exam, imaging, and what was actually removed. Our team focuses on careful identification and complete excision of suspicious tissue when surgery is the right step, and we also evaluate for look-alike or coexisting conditions that can drive pelvic pain and inflammation.

If you’ve been told “it wasn’t endometriosis” based only on a negative biopsy, we can help you review the operative findings and pathology details and build a clearer diagnostic plan. Many patients get answers when the full picture is put together thoughtfully—before and after surgery—rather than relying on a single datapoint.