title: Fibroma of tendon sheath of the infrapatellar fat pad in the knee.
abstract: A 69-year-old patient with unexplained pain of the right knee reported no prior trauma. A soft tissue tumor was identified using magnetic resonance imaging (MRI). The tumor showed low signal intensity on T1-weighted images, high signal intensity on T2, and peripheral enhancement on gadolinium-enhanced MRI. Perioperative observation revealed that the tumor was partly adhesive to the anterior knee joint capsule, but not to the patellar tendon.
authors.affiliation: Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Gunma, 371-8511, Japan.
authors.forename: Junkou
authors.initials: J
authors.lastname: Okada
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Shinozaki
authors.forename: Junko
authors.initials: J
authors.lastname: Hirato
authors.forename: Takashi
authors.initials: T
authors.lastname: Yanagawa
authors.forename: Kenji
authors.initials: K
authors.lastname: Takagishi
mesh_terms: D000273:Adipose Tissue / Q000473:pathology*; D000368:Aged; D005350:Fibroma / Q000175:diagnosis*; D006801:Humans; D007717:Knee / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D010329:Patella / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*; D013710:Tendons / Q000473:pathology*