Lege Artis Medicinae

[Initial experiences with color doppler ultrasonography of rectal tumors]

JAKAB Zsuzsa1, LESTÁR Béla1, RITTER László1, DULISKOVICH Tibor2, ARCHIE A Alexander3

APRIL 27, 1994

Lege Artis Medicinae - 1994;4(04)

[The authors report their one-year experiences with color-Doppler ultrasonography in the examination of rectal tumors. 160 transrectal ultrasound examinations were performed. The results of 30 cases with rectal cancer are reported. All 30 patients had gray-scale, pulsed Doppler and color Doppler endorectal ultrasound examination. The vascular structures of the tumors and the normal rectal wall were studied. Flow characteristics and pulsatility indices for arterial waveforms within the tumor tissue and within the normal wall were compared. Hypervascularisation was seen in all of the 30 tumors. In the tumor vessels an increased diastolic flow component was observed with lower pulsatility indices. The mean Pl was 1.206+0.394 (SD) (P<0.001). In the flow pattern of the normal submucosal arterial plexuses, the diastolic flow was absent or minimal and the mean PL was 3.168+1.151 (SD). Different color and pulsed Doppler signal types exist in rectal tumor tissue and in normal rectal wall. The investigation of rectal tumor vascularity may have a special importance in distinguishing tumor tissue from related perifocal oedema which is prerequisite to the determination of the extent of resection. ]


  1. Haynal Imre Egészségtudományi Egyetem Radiológiai Klinika Budapest
  2. Országos Röntgen és Sugárfizikai Intézet Budapest
  3. Division of Ultrasound Thomas Jefferson Medical University Philadelphia USA



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