Magnetic resonance imaging of Trilucent TM breast implants.
OBJECTIVE
To demonstrate the magnetic resonance imaging (MRI) appearances of intact and ruptured Trilucent TM implants with imaging and surgical correlation. The appearances of the implant transponder artefact are also described


METHODS
A retrospective review of the MRI findings in 34 patients with bilateral subpectoral Trilucent TM breast implants (Lipomatrix, Inc./Collagen Aesthetics International Inc., Neuchatel, Switzerland) was performed. Patients under implant surveillance and those with suspected implant rupture formed the study group. Imaging findings were correlated with surgical appearances.


RESULTS
Surgical correlation was available in 53% of patients. Fifty per cent (18/36) of implants were intact at surgery, 50% (18/36) of implants were ruptured. Of the 18 ruptured implants, 17 were intracapsular ruptures and one an extracapsular rupture. The sensitivity of MRI for detection of intracapsular rupture in Trilucent TM breast implants was 82% specificity 76%, positive predictive value 78%, negative predictive value 81% and accuracy 79% in this study group. No case of implant rupture was obscured by the transponder artefact. Four implants were found to have 'pseudocapsules' at surgery (5.9%), the implants were intact with fluid present between the implant and capsule. Only one pseudocapsule was demonstrated on MRI.


CONCLUSIONS
Magnetic resonance imaging is currently the most accurate technique for diagnosis of implant rupture in Trilucent TM breast implants. Transponder artefact does not appear to interfere with the assessment of implant rupture.
Elson
Elspeth M
EM
Guy's and St Thomas' NHS Trust, London, UK.
Jones
Annette
A
King
Rebecca
R
Chapman
P
P
Stanek
Jan
J
Irvine
Allan T
AT
Bingham
John B
JB
D000328:Adult; D016477:Artifacts; D018427:Breast Implants; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D011237:Predictive Value of Tests; D011475:Prosthesis Failure; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D013024:Soybean Oil
D013024:Soybean Oil