Mirror-Image Identical Twins Presenting in Mirror-Image Hip Cysts: A Case Report and Review of the Literature
- *Corresponding Author:
- Julia Song
800 S. Fairmount Ave., #207
Pasadena, CA 91105, USA
E-mail: [email protected]
Received date: January 23, 2013; Accepted date: February 15, 2013; Published date: February 28, 2013
Citation: Song J, Song A, Shim A, Kim E, Song M (2013) Mirror-Image Identical Twins Presenting in Mirror-Image Hip Cysts: A Case Report and Review of the Literature. Rheumatol Curr Res S17:001. doi: 10.4172/2161-1149.S17-001
Copyright: © 2013 Song J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
One-third of twins are monozygotic. Of monozygotic twins, 25% of them are mirror images. Mirror-imaging occurs when pathologic conditions are present on opposite sides of the body. This is the first case report of mirror-image identical twins with opposite hip pain that were found to have small cysts of the femoral head on opposite hips.
Case presentation: 38 year-old mirror-image Asian female identical twins presented with hip pain on opposite sides. MRI demonstrated a 4 mm cyst of the anterior aspect of the left hip, the femoral head and neck junction, with a herniation pit on opposite sides. The right-handed twin had the cyst on the right hip, and the left-handed twin had the cyst on the left hip.
Conclusion: Mirror-image pathology in mirror-image monozygotic twins suggests possible cytogenetic factors involved in the etiology of various medical problems. If an identical twin presents with a medical problem, it may be recommended to perform a medical diagnostic work-up on the other twin.