Differential Diagnosis for a Unilocular Mass with Homogeneous, Low-Level Echoes on the Left Ovary
- Single most likely diagnosis
- A. Endometriosis: This is the most likely diagnosis due to the description of a unilocular mass with homogeneous, low-level echoes, which is consistent with an endometrioma, a type of cyst associated with endometriosis.
- Other Likely diagnoses
- C. Mature teratoma: Although less likely than endometriosis given the homogeneous appearance, mature teratomas (dermoid cysts) can sometimes appear homogeneous if they do not contain the typical heterogeneous elements like fat, hair, or calcifications.
- D. Pedunculated leiomyoma: A pedunculated fibroid could potentially appear as a unilocular mass, but it would more likely have a heterogeneous echo pattern due to its fibrous content.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- B. Epithelial ovarian cancer: Although the description does not strongly suggest malignancy, ovarian cancer can present in various ways, including as a unilocular mass. It's crucial to consider this diagnosis to ensure timely and appropriate management.
- F. Tuboovarian abscess: This condition is a medical emergency and could potentially present with a unilocular mass if the abscess is walled off. The clinical context (e.g., fever, pelvic pain) would be critical in suspecting this diagnosis.
- Rare diagnoses
- E. Pelvic congestion syndrome: This condition involves chronic pelvic pain associated with ovarian and pelvic varices but does not typically present as a unilocular ovarian mass. It's more about the vascular congestion than a distinct mass.
- Other rare ovarian tumors or cysts could also be considered but are less likely given the provided description.