Objective: To describe a patient with a large endometrial cyst of the liver and review the literature concerning these rare lesions.
Design: Case report.
Setting: University hospital.
Patient(s): A 42-year-old nulligravid woman with a 22 x 24 x 30 cm cyst in the right lobe of the liver.
Intervention(s): Thorough exploration of the abdominal cavity revealed no evidence of endometrial implants elsewhere. A complete excision of the cyst was performed.
Main outcome measure(s): Surgical specimen.
Result(s): Histologic examination of the surgical specimen confirmed the diagnosis of endometriosis.
Conclusion(s): Endometriosis should be included in the differential diagnosis list of a peripherally located cystic liver mass in women.