Premium
Magnetic resonance spectroscopy imaging‐directed transrectal ultrasound biopsy increases prostate cancer detection in men with prostate‐specific antigen between 4–10 ng/mL and normal digital rectal examination
Author(s) -
Javali Tarun Dilip,
Dwivedi Durgesh Kumar,
Kumar Rajeev,
Jagannathan Naranamangalam Raghunathan,
Thulkar Sanjay,
Dinda Amit Kumar
Publication year - 2014
Publication title -
international journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 67
eISSN - 1442-2042
pISSN - 0919-8172
DOI - 10.1111/iju.12258
Subject(s) - medicine , rectal examination , magnetic resonance imaging , prostate cancer , prostate , ultrasound , biopsy , prostate specific antigen , radiology , urology , prostate biopsy , gold standard (test) , nuclear medicine , cancer
Objectives To evaluate the ability of magnetic resonance spectroscopic imaging to improve prostate cancer detection rate. Methods A retrospective analysis was carried out of 278 men with prostate‐specific antigen in the range of 4–10 ng/mL and normal digital rectal examination who underwent transrectal ultrasound‐guided prostate biopsy. Outcomes were compared between men who had a standard biopsy versus those who also underwent a prebiopsy magnetic resonance spectroscopic imaging. Men with an abnormal voxel on magnetic resonance spectroscopic imaging had standard transrectal ultrasound biopsies plus biopsies directed to the abnormal voxels. Results The study group ( n = 140) and control group ( n = 138) were similar in baseline parameters, such as mean age, prostate size and mean prostate‐specific antigen. The overall cancer detection in the magnetic resonance spectroscopic imaging positive group (24.4%) was more than double that of the control group (10.1%). On comparing the magnetic resonance spectroscopic imaging results with the transrectal ultrasound biopsy findings, magnetic resonance spectroscopic imaging had 95.6% sensitivity, 41.9% specificity, a positive predictive value of 24.4%, a negative predictive value of 98% and an accuracy of 51.4%. Conclusions Magnetic resonance spectroscopic imaging‐directed transrectal ultrasound biopsy increases the cancer detection rate compared with standard transrectal ultrasound biopsy in patients with normal digital rectal examination and elevated prostate‐specific antigen in the range of 4–10 ng/mL.