Pericallosal lipoma

Case contributed by Mohamed Abdel-Tawab Mohamed
Diagnosis certain


Patient presented with headache and vomiting.

Patient Data

Age: 12 years
Gender: Male

Curvilinear corpus callosal lipoma is seen interhemispheric in the pericallosal sulcus measuring 0.65 cm in thickness, 4 cm in length and 0.5 cm in height.

It exhibits T1 bright signal, less bright signal in T2, suppresses on both T1/SPIR as well as T2/FLAIR with fat saturation. It shows chemical shift artifact around in T1WI. No diffusion restriction

Corpus callosal dysgenesis evident.

Normal signal intensity of both cerebral hemispheres with no definite focal abnormalities.

Normal size and configuration of the ventricular system.

Normal posterior fossa.

Case Discussion

Pericallosal lipoma is of two types:

  • Curvilinear type: as in this case which is curvilinear in shape taking the shape of the pericallosal sulcus. Its thickness is less than 1 cm, in this case is 0.65 cm
  • Tubulonodular type: is rounded or tubular in shape with a thickness of more than 1 cm

Common association is corpus callosum agenesis or dysgenesis as in this case.

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