前列腺癌经直肠超声和CT征象的敏感性分析

目的比较经直肠超声及CT显示前列腺癌征象的敏感性。方法 分析24例经病理证实的前列腺癌患者的声像图及CT图像,并与病理结果进行对照。结果24例前列腺癌共检测到32个痛结节,经直肠超声显示低回声14例,17个结节,等回声4例,6个结节,强回声6例,9个结节;21例前列腺增大,20例检测到异常血流信号,9例侵犯精囊,3例侵犯膀胱,5例包膜未受侵犯。CT显示密度不均21例（含小钙化3例）,5例侵犯精囊,4例侵犯膀胱,3例侵犯直肠前壁,盆腔区域淋巴结转移3例,髂骨转移1例,6例包膜未受侵犯。结论经A肠超声对病灶的回声改变敏感,且对侵犯及精囊腺的敏感度较CT更高,但对微小的包膜侵犯及盆腔淋巴结转移的敏感度较低,CT对小钙化及骨转移较高,CT及经直肠超声对于前列腺中央区的小癌灶均不敏感。

The sensitivity analysis of CT signs and transrectal ultrasound sonograms of prostate cancer

Objective To comparatively analyze the sensitivity of transrectal ultrasound and CT signs of prostate cancer. Methods Twenty - four patients with prostate cancer were confirmed by pathology, their sonograms and CT signs were analyzed, and the results were compared with pathology. Results There were 32 nodules found in 24 cases of prostate cancer, transrectal ultrasound showed 17 lesions in 14 cases with low level echo,6 lesions in 4 eases with equal echo,9 lesions in 6 eases with strong echo, Prostate was increased in 21 cases, abnormal blood flow signals were detected in 20 cases,9 cases were of seminal vesicle invasion,3 eases of bladder invasion,5 cases of no capsule invasion. CT showed uneven density in 21 cases （ including 3 eases of small calcification） ,5 cases of seminal vesicles invasion ,4 eases of bladder invasion,3 cases of rectal wall invasion,3 eases of pelvie lymph node metastasis, 1 case of iliac bone metastasis,6 cases of no capsule invasion. Conclusion Transrectal ultrasound is sensitive to echo changes of lesion, and it is more sensitive than CT to seminal vesicles invasion, while it is less sensitive to the tiny capsule invasion and pelvic lympy node metastasis, CT is sensitive to bone metastasis and small calcification, and CT and transrectal ultrasound are not sensitive to small cancer lesions of the prostate central zone.