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In the present study, we aimed to describe the predictors of PD deformity stabilisation and improvement in a cohort of prospectively enrolled patients opting against treatment for PD. The study population consisted of patients (i) with PD, defined by the presence of a palpable http://www.selleckchem.com/products/AZD6244.html plaque at presentation on examination by a urologist experienced with PD management, (ii) who had PD for http://www.selleckchem.com/products/MK-1775.html fashion. The database was registered with the Institutional Review Board. The study population was then stratified into three groups based on their time to presentation for evaluation after the onset of symptoms: Group A, ��6 months, Group B, 7�C12 months, and Group C, 13�C18 months. Stabilisation of deformity was defined as a change in curvature of �� 10�� between DAs. Improvement or progression of deformity was defined as a ��10�� change between DAs. DA was performed in the office by an experienced practitioner (J.P.M.) with the assistance of intracavernous injection of trimix (30?mg/mL papaverine, 1?mg/mL phentolamine, 10?��g/mL alprostadil), with repeat dosing given to a maximum of three doses until maximum erectile rigidity was achieved. Curvature was measured using a goniometer at maximum penile rigidity. On repeat DA, the practitioner was ��blinded�� to the results of the initial DA. Duplex Doppler ultrasonography (US) of the penis was performed to assess for erectile haemodynamics as well as the presence of plaque calcification. anova was used to define differences in stabilisation and progression rates between patient groups. Using logistic regression, multivariable analysis was used to define predictors of stabilisation and improvement. The model included: patient age, duration of PD, degree and direction of curvature, presence of penile pain and presence of calcification within the PD plaque. In all, 176 men met all inclusion criteria and http://www.selleck.cn/products/azd4547.html were included in this analysis. The mean (sd) age was 54 (27) years. The mean duration of PD before presentation was 9 (12) months. On initial DA, the mean (sd) curvature was 42 (27)��. The mean (sd) duration between the two DAs was 19 (7) months. Group A was comprised of 56 patients, with 84 patients in Group B and 36 patients in Group C. Patient characteristics according to time-to-presentation for evaluation are presented in Table?1. In all, 67% of the entire population had no change in deformity over time, while 12% improved with a mean (sd) change of 27 (14)�� and in 21% the deformity progressed (worsened) with a mean (sd) change of 22(11)��. 0.07 0.01* 0.08**