Breast cystic echinococcosis with ultrasonographic "cerebral gyrus sign": a case report.

Authors

Na Lu, Hongping Gong, Hualin Yan, Yu Liu

Published in

Frontiers in oncology. Volume 16. Pages 1931802. Epub Sep 15, 2026.

Abstract

Cystic echinococcosis (CE), caused by Echinococcus granulosus, is a zoonotic parasitic disease that primarily affects the liver and lungs, with breast involvement being extremely rare. We report a case of breast CE in a 50-year-old Tibetan woman from an endemic area.
A 50-year-old Tibetan woman from a pastoral area presented with a palpable mass in the left breast.Ultrasonography revealed a mixed-echoic nodule exhibiting a "cerebral gyrus sign" in the glandular layer of the left breast. MRI revealed an oval mass in the upper quadrant of the left breast, showing homogeneous high signal intensity on fat-suppressed T2-weighted images and thin peripheral ring enhancement. The final pathology diagnosis after surgery was breast CE.
This case highlights the ultrasonographic "cerebral gyrus sign" as a potential imaging clue for breast CE and emphasizes that hydatid disease should be considered in patients from endemic regions presenting with complex breast masses, even with negative serology. Increased awareness of this rare entity may help reduce misdiagnosis and guide appropriate clinical management.

PMID:
42812171
Bibliographic data and abstract were imported from PubMed on 30 Sep 2026.

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