Detection of intracapsular rupture of silicone breast prostheses using MR imaging is often performed by identifying the "linguine sign" 1. The linguine sign is easily differentiated from simple ...radial folds that are seen in intact implants. However, more subtle signs of intracapsular rupture, including undulating subcapsular lines and the "teardrop sign," are less often recognized 2-5 and may prove difficult for the less experienced radiologist to differentiate from complex radial folds of intact implants. In this essay, we illustrate the MR imaging findings of complex radial folds in intact implants and compare them with findings of incomplete shell collapse in ruptured implants in a surgically confirmed series of explanted silicone breast prostheses.
Fever is a natural and almost universal mammalian response to infection. There exists a fear amongst general public and healthcare providers regarding fever being harmful leading to its overzealous ...management with antipyretics. Although the National Institute for Health and Care Excellence (NICE) guidelines suggest the use of single antipyretic agent for management of fever, combination therapy with paracetamol, and ibuprofen is common in paediatric practice in the United Kingdom. These antipyretics at times can cause significant adverse events even when administered at regular therapeutic doses. We describe a young boy who presented with significant hypothermia (34.1°C) and was initially treated as cold sepsis. Once the boy got warmed up and as blood results became subsequently available, it became clearer that the hypothermia was secondary to therapeutic doses of antipyretics. In conclusion, we hope to improve awareness regarding this condition in clinical practice and educate health care professionals and caregivers with recommended NICE guidelines.
The objective of this study was to determine the frequency and significance of the MR findings of incomplete shell collapse for detecting implant rupture in a series of surgically removed breast ...prostheses. MR images of 86 breast implants in 44 patients were studied retrospectively and correlated with surgical findings at explanation. MR findings included (a) complete shell collapse (linguine sign), 21 implants; (b) incomplete shell collapse (subcapsular line sign, teardrop sign, and keyhole sign), 33 implants; (c) radial folds, 31 implants; and (d) normal, 1 implant. The subcapsular line sign was seen in 26 implants, the teardrop sign was seen in 27 implants, and the keyhole sign was seen in 23 implants. At surgery, 48 implants were found to be ruptured and 38 were intact. The MR findings of ruptured implants showed signs of incomplete collapse in 52% (n = 25), linguine sign in 44% (n = 21), and radial folds in 4% (n = 2). The linguine sign perfectly predicted implant rupture, but sensitivity was low. Findings of incomplete shell collapse improved sensitivity and negative predictive values, and the subcapsular line sign produced a significant incremental increase in predictive ability. MRI signs of incomplete shell collapse were more common than the linguine sign in ruptured implants and are significant contributors to the high sensitivity and negative predictive values of MRI for evaluating implant integrity.
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