文献考察:鈍的腹部外傷565例中ヘリカルCTでextravasationを18.4%に認めた.脾臓が最も多く(全脾臓症例の17.7%),肝臓は9.1%.ヘリカル以前のCTよりかなり高くなっている.
AJR Am J Roentgenol. 2002 Jan;178(1):17-20. Using contrast-enhanced helical CT to visualize arterial extravasation after blunt abdominal trauma: incidence and organ distribution.
Yao DC, Jeffrey RB Jr, Mirvis SE, Weekes A, Federle MP, Kim C, Lane MJ, Prabhakar P, Radin R, Ralls PW.
OBJECTIVE: We evaluated the incidence and organ distribution of arterial extravasation identified using contrast-enhanced helical CT in patients who had sustained abdominal visceral injuries and pelvic fractures after blunt trauma. SUBJECTS AND METHODS: Five hundred sixty-five consecutive patients from four level I trauma centers who had CT scans showing abdominal visceral injuries or pelvic fractures were included in this series. The presence or absence of arterial extravasation, as well as the anatomic sites of arterial extravasation, was noted. We obtained clinical follow-up data, including surgical or angiographic findings. RESULTS: In our series, 104 (18.4%) of 565 patients had arterial extravasation. Of the 104 patients, 81 (77.9%) underwent surgery, embolization, or both. The combined rate of surgery or embolization in patients with arterial extravasation was statistically higher than expected at all four institutions (p
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