CASE A
A 3-year-old boy who has been limping and favoring the left lower extremity for approximately 1 month.

CASE B
A 46-year-old man presenting with progressive bilateral lower extremity weakness and gait difficulty.

CASE C
A 38-year-old man with von Hippel–Lindau disease presenting with bowel and bladder dysfunction.

CASE D
A 29-year-old Brazilian man with numbness in both legs, difficulty walking, and urinary retention.

DESCRIPTION OF FINDINGS

  • Case A: A heterogeneous, solid and cystic, T2 hyperintense, T1 hypointense, nonenhancing mass in a child that is expanding the conus.

  • Case B: A heterogeneous, T2 hyperintense, avidly enhancing conus mass with a distinct plane between the tumor and the conus noted on T2 images.

  • Case C: A T2 hyperintense, solid and cystic conus mass with a cyst and enhancing mural nodule configuration.

  • Case D: Nodular, irregular enhancement of the peripheral conus with marked associated edema.

Diagnosis

Case A

Astrocytoma

Case B

Myxopapillary ependymoma

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