Adnexal tumors are growths of cells that form on the organs and connective tissues around the uterus. Adnexal tumors most often aren't cancerous, but they can be cancerous.

Adnexal tumors occur in the:

  • Ovaries
  • Fallopian tubes
  • Connective tissue around the ovaries or fallopian tubes

Diagnosis of adnexal tumors involves a careful physical exam, imaging tests and, sometimes, surgery. Treatment for adnexal tumors depends on the specific location and types of cells involved.

Clinical trials

Explore Mayo Clinic studies testing new treatments, interventions and tests as a means to prevent, detect, treat or manage this condition.

Adnexal tumors care at Mayo Clinic

Oct. 03, 2023

Living with adnexal tumors?

Connect with others like you for support and answers to your questions in the Gynecologic Cancers support group on Mayo Clinic Connect, a patient community.

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  1. AskMayoExpert. Adnexal mass. Mayo Clinic; 2020.
  2. Muto MG. Approach to the patient with an adnexal mass. https://www.uptodate.com/contents/search. Accessed Oct. 15, 2021.
  3. Jensen NA. Allscripts EPSi. Mayo Clinic. Nov. 1, 2021.


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