title: [Perineal nodular induration].
abstract: A 33-year-old man visited the outpatient department of the authors of this article with a large perineal mass. The patient was an active amateur racing cyclist. At physical examination the swelling resembled an accessory scrotum. Ultrasonography revealed a subcutaneous thickening but no intrascrotal abnormalities. Because of progressive symptoms the perineal tumour was surgically excised. Histopathologic examination revealed cell deficient and degenerative connective tissue. The tissue possibly contained a bursa. The tumour was diagnosed as perineal nodular induration, a rare lesion. These nodules almost invariably affect keen cyclists after sustained cycling. Recognition of perineal nodular induration is of particular interest to general practitioners, urologists and specialists in sports medicine.
authors.affiliation: Medisch Centrum Haaglanden, locatie Antoniushove, Leidschendam, The Netherlands. celine_asselbergs@hotmail.com
authors.forename: Céline P E
authors.initials: CP
authors.lastname: Asselbergs
authors.forename: J W M Dick
authors.initials: JW
authors.lastname: Loeff
authors.forename: Githa J
authors.initials: GJ
authors.lastname: de Jongh
authors.forename: Th C Don
authors.initials: TC
authors.lastname: de Winter
mesh_terms: D000328:Adult; D001265:Athletic Injuries / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D001642:Bicycling / Q000293:injuries; D006801:Humans; D008297:Male; D010502:Perineum / Q000293:injuries* / Q000473:pathology / Q000601:surgery; D011312:Pressure / Q000009:adverse effects*; D012611:Scrotum / Q000293:injuries* / Q000473:pathology / Q000601:surgery