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소화기 강의 - 소화기 문제풀이 2 (21-38번)

38번에서 diffuse hepatic steatosis, ascites, splenomegaly소견이 있다고 책에 나오는데 어떤 부분에서 그런 소견이 있는지 알려주실 수 있으신가뇨?

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  • 중꺽마

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  • 2023년 6월 18일

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1개의 의견

잼잼쌤

·

2023년 6월 19일

1) diffuse hepatic steatosis는 다음과 같이 설명됩니다.

Diffuse steatosis reduces liver attenuation. On non-contrast CT, moderate to severe steatosis (at least 30% fat fraction) is predicted by : - relative hypoattenuation: liver attenuation more than 10 HU less than that of spleen. - absolute low attenuation: liver attenuation lower than 40 HU .

출처 : https://radiopaedia.org/articles/diffuse-hepatic-steatosis

그래서 현재 이 사진만으로는 HU를 정확히 알 수는 없지만, 비장에 비해 어두운 점으로 보아 diffuse hepatic steatosis라고 판단한 것 같습니다.

2) Ascite는 빨간색 화살표입니다.

3) splenomegaly CT 소견은 다음과같이 정리되나, 현재 이사진만으로는 판단하기가 어려울 것 같습니다.


Single splenic measurements can be used to identify splenomegaly:

  • width (largest AP axial measurement) >10.6 cm 15

  • craniocaudal length

    • >9.5-10.5 cm for splenomegaly 4,15

    • >14.5 cm for massive splenomegaly 4

  • coronal oblique length >12 cm

The splenic index was first proposed to express splenic volume 10:

  • splenic index = length × width × thickness (cm)

The normal range of the index is 120-480 and this is considered the most reliable measurement for splenomegaly 15. Since the index does not have a unit, other formulas have been proposed for estimating splenic volume on cross-sectional imaging 5

  • spleen volume (cm3) = 30 + 0.58 × craniocaudal length × diameter × thickness (cm)

Where:

  • length is defined as the craniocaudal distance between the first and last slices in the axial plane where the spleen is depicted

  • diameter is the largest measurable long axis distance in the axial plane

  • thickness is the largest perpendicular dimension to the diameter in the axial plane

The normal range of the estimated volume in healthy individuals with this formula is 107.2 – 314.5 cm3 (mean: 214.6 cm3) 5.

출처 : https://radiopaedia.org/articles/splenomegaly


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