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Ganglion cyst arising from the infrapatellar fat pad in a child

Kosuke Sugiura1, Naoto Suzue, Tetsuya Matsuura

  • 1Department of Orthopedics, the University of Tokushima.

The Journal of Medical Investigation : JMI
|September 25, 2015
PubMed

Insights

A rare ganglion cyst originating from the infrapatellar fat pad caused knee pain in a child. This case highlights the importance of considering this unusual diagnosis in pediatric knee injuries.

Area of Science:

  • Orthopedics
  • Pediatric Surgery
  • Radiology

Background:

  • Ganglion cysts are common benign cystic lesions.
  • Cysts originating from the infrapatellar fat pad are exceptionally rare.
  • This is the first reported case in a pediatric patient.

Observation:

  • A 10-year-old boy presented with persistent right knee pain.
  • Magnetic resonance imaging showed a multilobular mass near the infrapatellar fat pad and anterior cruciate ligament.
  • The mass was arthroscopically excised and found to contain myxoid matrix.

Findings:

  • Histological examination confirmed the diagnosis of a ganglion cyst.
  • The cyst originated from the infrapatellar fat pad.
  • This represents the first documented instance of an infrapatellar fat pad ganglion cyst in a child.

Implications:

  • Pediatricians and orthopedic surgeons should consider infrapatellar fat pad ganglion cysts in children with unexplained knee pain.
  • Early diagnosis and treatment can alleviate pain and restore range of motion in pediatric patients.
  • This case expands the differential diagnosis for pediatric knee masses and pain.

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