title: Intra-articular nodular fasciitis of the knee in a 4-year-old girl: a case report and review of the literature.
abstract: Nodular fasciitis is a benign, proliferative lesion of myofibroblasts developed from the fascia. It arises commonly in the upper extremities of adults and in the head and neck region of infants and children. Involvement of the knee is exceedingly rare. We report a case of a 4-year-old girl with a knee mass, causing limitation of knee flexion and pain. Arthroscopic examination was performed followed by arthrotomy and tumor excision. Pathologic findings revealed clusters of spindle cells with arrangement of storiform pattern in a loosely textured mucoid matrix. To the best of our knowledge, this is the youngest patient associated with articular nodular fasciitis in the knee joint.
authors.affiliation: Department of Orthopaedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
authors.forename: Po Y
authors.initials: PY
authors.lastname: Ko
authors.forename: Ming T
authors.initials: MT
authors.lastname: Huang
authors.forename: Hsiang L
authors.initials: HL
authors.lastname: Song
authors.forename: Mark C-J
authors.initials: MC
authors.lastname: Lin
mesh_terms: D002675:Child, Preschool; D005208:Fasciitis / Q000473:pathology*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000473:pathology*