Nghiên cứu đặc điểm giải phẫu, biến thể của động mạch tuyến tiền liệt trên chụp mạch số hóa xóa nền

Studying anatomical characteristics and variants of prostatic artery on digital subtraction angiography

SUMMARY

Objectives: To describe anatomical features and variants of prostatic artery (PA) on digital subtraction angiography (DSA).

Subjects and Methods: Descriptive statistic study. We reviewed the DSA of 58 patients, which had a PA embolization to reduce the benign prostatic hyperplasia (BPH) symptoms at radiology department of Bach Mai Hospitalfrom Oct - 2016 to June - 2017

Results: PA was found at 110 pelvic halves, of which 5 pelvic halves (4,5%) had two PAs, 105 pelvic halves had one PA. In terms of the type of origin of PA according to Francisco Carnevalle, in 115 PAs, the percentage of type 1 (was from a common trunk with the superior vesical artery - SVA), type 2 (anterior division of internal iliac artery), type 3 (obturator artery), type 4 (internal pudendal artery), type 5 (less common origins)was successively 33,9%, 13,9%, 18,3%, 23,9%, 10,4%. Atherosclerosis of PA observed in 20.9%.The “corkscrew” patern was found in 30.4%. The average diameter of PA was 1.5 ± 0.34mm. Anastomosis of PA with surrounding arteriesare common. PA may supply rectum (6.1%), seminal vesical(9.6%), bladder (5,2%), controlateral prostatic parenhyma (13%), surrounding soft - tissues (3.5%).

Conclusion: The common trunk with SVA was the most common origin of PA. Anatomosis of PA with surrounding tissues is complex.... Therefore, profound knowledge ofthe PA anatomy and variants on DSA is necessary to treat BPH by prostatic arterial embolization.

Key words: prostatic artery, digital subtraction angiography, Francisco Carnevalle classification.