Hibernoma

Case contributed by Matt A. Morgan , 15 Jun 2015
Diagnosis certain
Changed by Mostafa Elfeky, 14 Sep 2021

Updates to Quizquestion Attributes

Answer was changed:
Although used synonymously for all practical purposes, there is a subtle difference between the two terms. The linear attenuation coefficient (mu) is made up of two parts 1) density (atoms per cm) and 2) a proportionality constant which is expresses the likelihood of an atom stopping an x-ray beam. For some materials (such as bone) the material is not only more dense, but the atoms are larger and have a higher likelihood of stopping an x-ray beam, therefore "hypoattenuating" is a more inclusive term.

Updates to Case Attributes

Age changed from 20-30Y to 25 years.

Systems changed:

  • Oncology

Updates to Study Attributes

Images Changes:

Image MRI (T1 C+ fat sat) ( update )

Description was removed:
(cropped) TR: 475 TE: 10, Matrix: 258 x 104, FOV: 39.1 x 39.1 cm, 5 thk / 6 sp, 10 ml Gadavist

Image MRI (T1 C+ fat sat) ( update )

Description was removed:
(cropped) TR: 474 TE: 10, Matrix: 238 x 189, FOV: 38 x 38 cm, 5 thk / 6 sp, 10 ml Gadavist

Image MRI (T1 fat sat) ( update )

Description was removed:
(cropped) TR: 459 TE: 10, Matrix: 252 x 301, FOV: 38 x 38 cm, 5 thk / 6 sp

Image MRI (T1) ( update )

Description was removed:
(cropped) TR: 459 TE: 10, Matrix: 252 x 198, FOV: 37.8 x 37.8 cm, 5 thk / 6 sp

Image MRI (T2) ( update )

Description was removed:
(cropped) TR: 3274 TE: 90, Matrix: 252 x 199, FOV: 37.8 x 37.8 cm, 5 thk / 6 sp

Image MRI (T2) ( update )

Description was removed:
(zoomed in) TR: 3461 TE: 90, Matrix: 238 x 187, FOV: 28.3 x 28.3 cm, 5 thk / 6 sp

Updates to Study Attributes

Images Changes:

Image CT (bone window) ( update )

Description was removed:
The attenuation of the mass deep to the gluteus maximus and superfical to the gluteus medius has Hounsfield units between fat and soft tissue.

Image CT (C+ portal venous phase) ( update )

Description was removed:
There is a prominent feeding vessel at the lateral margin of the mass.

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