Preliminary study of diffusion-weighted MRI in the preoperative diagnosis of cystitis glandularis.
OBJECTIVE
To assess the efficacy of diffusion-weighted (DWI) magnetic resonance imaging (MRI) in distinguishing cystitis glandularis (CG) from bladder urothelial carcinoma.


METHODS
Ultrasound, computed tomography (CT), conventional MRI, and DWI of 30 patients with histopathologically confirmed CG were analysed retrospectively and the imaging findings were correlated to the findings at histology.


RESULTS
Ultrasound was non diagnostic in 11/18 and misdiagnosed malignancy in 7/18; CT was non diagnostic in 6/10 and misdiagnosed malignancy in 4/10; MRI was non diagnostic in 0 and misdiagnosed malignancy in 4/5 respectively. One patient with diffuse bladder wall thickening was correctly diagnosed as CG at MRI. All six patients who underwent additional DWI were accurately diagnosed as having CG with no or minimal reduction of diffusion.


CONCLUSIONS
Diffusion is not reduced or shows minimal reduction in CG. DWI may aid the differential diagnosis of CG.
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
H-J
HJ
Wang
Department of Radiology, Conde de S. Januario Central Hospital, Macau, People's Republic of China.
M H
MH
Pui
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China. Electronic address: dr.guoyan@163.com.
Y
Y
Guo
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
J
J
Guan
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
X-L
XL
Zhang
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
M-J
MJ
Liu
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
S-R
SR
Li
Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Road 2, Guangzhou, Guangdong, People's Republic of China.
J-H
JH
Lin
D000328:Adult; D000368:Aged; D003556:Cystitis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018579:Patient Selection; D010865:Pilot Projects; D011230:Precancerous Conditions / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D011300:Preoperative Care / Q000379:methods; D011379:Prognosis; D012189:Retrospective Studies; D001749:Urinary Bladder Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery