Utility of Sonoelastography in Differentiating Ruptured From Unruptured Epidermal Cysts and Implications for XXXX Care.

@entity1 @entity4890 @entity397 @entity45
OBJECTIVES: This study aimed to evaluate the correlation of sonoelastographic features between @entity397 and unruptured @entity4890 . METHODS: We performed a prospective survey of 27 @entity1 with clinically suspected @entity4890 diagnosed by excisional biopsy with prebiopsy sonography and real-time sonoelastography. We statistically evaluated the correlation between elastographic and histopathologic features. To measure the relative hardness on elastography, the Rinside/Routside ratio was used to show the ratio of the elasticity inside and outside the cyst, where the random value R was defined as the median red pixel intensity/(median red pixel intensity + median green pixel intensity + median blue pixel intensity). RESULTS: Only 24 of the 27 @entity1 were enrolled. Among the 24 diagnosed @entity4890 , 13 were @entity45 , and 11 were @entity397 based on histopathologic examination. There was no correlation between sonographically and histopathologically measured cyst diameters. The Rinside/Routside ratio was significantly higher in @entity45 than @entity397 (mean    SD, 1.16    0.15 versus 1.04    0.13; P = .047). All values below the cutoff point were considered to indicate @entity397 , and the cutoff value was set to 1.0919, which afforded sensitivity of 83.3% and specificity of 66.7%. CONCLUSIONS: Real-time sonoelastography is able to detect differences in tissue elasticity between @entity397 and unruptured @entity4890 . This study shows the utility of real-time sonoelastography, which has important implications for treatment planning.
