MEDIAL MENISCAL CYST OF THE KNEE SIMULATING A SOLITARY BONE LESION - A CASE-REPORT AND REVIEW OF THE LITERATURE

Meniscal cysts are common lesions, but extensive bony changes arising from these cysts are exceedingly rare. These changes are usually erosi ve defects about the tibia. Dull pain with an associated mass are clas sic findings. Magnetic resonance imaging is useful in making the diagn osis and arthroscopic management yields excellent results. A 47-year-o ld man developed a symptomatic medial meniscal cyst that invaded the m edial femoral condyle simulating a solitary bone lesion. Magnetic reso nance imaging revealed the contiguous nature of the cyst with the meni scus. Arthrotomy with cyst excision was required in this case and led to the amelioration of symptoms.