ABSTRACT
Objective To analyze the MSCT features of subepithelial lesions of the urinary bladder.Methods Thirty-one patients with subepithelial lesions of the urinary bladder proved by pathology were enrolled in this study.The MSCT findings were analyzed. Results Among the 3 1 cases with subpeithelial lesions of the urinary bladder,7 cases were non-epithelial tumors (including 3 cases of leiomyomas,2 cases of paragangliomas,1 case of hemangioma and 1 case of granulocytic sarcoma),and other 24 cases were inflammatory/reactive lesions,all as cystitis glandularis.MSCT findings were as follows:paragangliomas were solitary masses with homogeneous density,smooth border and wide base,with rapid wash-in and wash-out enhancement pattern and peak enhancement in the arterial phase.Hemangiomas and leiomyomas both presented as single round mass with slight enhancement.Granulocytic sarcoma appeared as diffuse bladder wall thickening with pebble-like projections,and slight enhancement.Cystitis glandularis was characterized by local thickening of the bladder wall with nodular or aquatics-like uplift,and was also characterized by diffuse thickening,with slight and progressive enhancement in 22 cases,and significant enhancement in venous phase in 2 cases.Conclusion The subepithelial lesions of urinary bladder may present with tumor-like appearance.The key characteristic feature for cystitis glandularis is local thickening of the bladder wall with nodular or aquatics-like uplift.Rapid wash-in and wash-out enhancement pattern is considered to be diagnostically significant for paragangliomas.However,the rest of the lesions overlap in the imaging appearances,and the diagnosis should be combined with clinical manifestations to improve the accuracy of preoperative diagnosis.
ABSTRACT
Objective To investigate the clinical and CT features of non-epithelial malignant tumors of bladder to improve the understanding.Methods Clinical and CT data of 1 1 patients with non-epithelial malignant tumors of bladder were analyzed retrospectively. All patients underwent plain and contrast enhanced CT scan,and confirmed by surgery and pathology.Results Of 1 1 patients,there were 4 rhabdomyosarcomas,3 cancerous sarcomas,2 leiomyosarcomas and 2 small cell carcinomas.The CT performance were mostly cauliflower like or papillary,with wide basis and thickening of adjacent bladder wall.Diffuse thickening of the bladder wall was detected in all rhabdomyosarcoma lesions.The lesions were homogeneous or heterogeneous soft tissue-like density.CT showed calcification in 1 cancerous sarcoma,necrosis in 1 leiomyosarcoma and 1 rhabdomyosarcoma.Contrast enhanced scan showed mild to moderate or significant enhancement.Conclusion Besides the age of rhabdomyosarcoma,other non-epithelial malignant tumors of bladder have no special clinical and CT characteristics.CT examination can provide the information about location,size,surrounding tissue change,which is helpful to make the treatment plan.
ABSTRACT
Objective To improve the imaging diagnosis and differential diagnosis of non-epithelial ovarian tumor.Methods 34 patients with non-epithelial ovarian tumor confirmed by pathology were analyzed retrospectively.The image features of each patients were analyzed and compared with surgical pathology.Results The results exhibited 13 cases of teratoma,6 cases of ovarian granulosa cell tumor, 6 cases of ovarian fibroma, 5 cases of thecoma, 2 cases of dysgerminoma,and 2 cases of endodermal sinus tumor.All kinds of non-epithelial ovarian tumors had its imaging manifestations and clinical features.Conclusion Non-epithelial ovarian tumors have certain characteristic CT and MR performance,and combining the onset age,clinical symptoms and biochemical examination,can make the qualitative diagnosis.