Figure 3. Histopathological findings. (a) Microscopically, peribiliary glands are located around the cyst (HE staining, ×200). (b) The cyst is lined by a single layer of cylindrical epithelium without cytological atypia (CK-19 staining, ×100). This epithelium is not underlined by an ovarian-like hypercellular stroma as stained by (c) estrogen receptor, (d) progesterone receptor, and (e) inhibin (×100).
Conflict of Interest Statement:
The authors declare no conflict of interest.
Funding Statement:
This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
Ethics Statement:
Informed consent was obtained from the patient for the surgical procedure and for publication of this case report, including the ultrasonographic, CT, MRI findings, and intraoperative observations along with other clinical details. All identifying information has been appropriately anonymized to maintain patient confidentiality. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1975, as revised in 2013.