Breast ImagingClinical and Imaging Characteristics of Polyimplant Prosthesis Hydrogel Breast ImplantsChoi, Jae Jeong MD*; Lee, Jae Hee MD†; Kang, Bong Joo MD*; Kim, Sung Hun MD*; Lee, Ji Hye MD*; Ahn, Sang Tae MD‡; Yoon, Won Jun MD§; Lee, Hong Ki MD∥Author Information From the *Department of Radiology, Seoul St. Mary's Hospital, Catholic University of Korea; †Breast Clinic, Human Medical Imaging and Intervention Center; ‡Department of Plastic Surgery, Seoul St. Mary's Hospital, Catholic University of Korea; §Migo Aesthetic Surgical Clinic; and ∥Image Plastic Surgery Clinic, Seoul, Korea. Received for publication December 1, 2009; accepted December 18, 2009. Reprints: Jae Hee Lee, MD, Human Medical Imaging and Intervention Center, 12-5 Jamwon-dong, Seocho-gu, Seoul, Korea, 137-902 (e-mail: [email protected]). Journal of Computer Assisted Tomography: May 2010 - Volume 34 - Issue 3 - p 449-455 doi: 10.1097/RCT.0b013e3181d0c751 Buy Metrics Abstract Objective: To describe the clinical and imaging characteristics of Polyimplant Prosthesis (PIP) hydrogel breast implants. Methods: Seven patients with surgically confirmed 8 ruptured and 6 normal PIP hydrogel implants were enrolled in our study. We reviewed retrospectively the medical records and breast ultrasonographic and magnetic resonance imaging (MRI) findings of the patients. Results: Breast asymmetry was the most common clinical feature of PIP hydrogel implant rupture. The main radiologic finding of ruptured implants was a significant fluid collection around the implant. All 4 intracapsular ruptures showed no significant collapse of the implants despite a large accumulation of fluid surrounding the ruptured implants on ultrasonography and MRI. Three extracapsular ruptures showed variable collapse of the implants, partial collapse in 1 implant and total collapse in 2 implants. One extracapsular rupture showed enlargement of the implant. Ultrasonography and MRI revealed hydrogel extension to the muscles and chest wall in all 4 extracapsular ruptures and extensive inflammation and fibrosis in 3 extracapsular ruptures. Conclusions: Polyimplant Prosthesis hydrogel implant rupture can be clinically silent. Knowledge of clinical and radiologic findings of the ruptured implants will be helpful in its diagnosis. © 2010 Lippincott Williams & Wilkins, Inc.