Skeletal Radiology

, Volume 38, Issue 9, pp 919–920 | Cite as

Perineal nodular swelling in a recreational cyclist

  • Stefaan Van de Perre
  • Filip M. VanhoenackerEmail author
  • Luc Vanstraelen
  • Jan Gaens
  • Maarten Michiels
Test Yourself: Question


A 41-year-old recreational cyclist was referred to our department for an ultrasound examination, because of a nodular swelling in the right perineal region, which he had felt for several weeks. The lesion was painful on palpation, but the overlying skin was normal (Fig. 1). The patient was referred for ultrasound (Fig. 2) and MRI of the perineum (Fig. 3).
Fig. 1

Clinical picture. Nodular swelling at the right side of the perineum and posterior to the scrotal sac (black arrow). No significant abnormalities of the overlying skin

Fig. 2

Ultrasound of the perineal region. Note a solid nodule with a slightly inhomogeneous echotexture (white asterisk), without marked hypervascularization at color Doppler

Fig. 3

MRI examination. a Coronal fat-suppressed TSE T2-weighted images (WI): Superficially located nodular lesion at the right ischial tuberosity. The nodule is of iso-intense to slightly hyperintense signal intensity, compared with muscle (black arrows). No large fluid collections or abscess formation was noted. b Coronal TSE T1-WI: ill-defined hypointense nodule within the subcutaneous fat (black arrows). c Coronal fat-suppressed TSE T1-WI after intravenous administration of gadolinium contrast: no enhancement is seen (white arrows)

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© ISS 2009

Authors and Affiliations

  • Stefaan Van de Perre
    • 1
  • Filip M. Vanhoenacker
    • 2
    Email author
  • Luc Vanstraelen
    • 1
  • Jan Gaens
    • 3
  • Maarten Michiels
    • 4
  1. 1.Department of RadiologyHeilig HartziekenhuisMolBelgium
  2. 2.Department of RadiologyUniversity Hospital AntwerpEdegemBelgium
  3. 3.Department of RadiologyGeelBelgium
  4. 4.Department of SurgeryHeilig HartziekenhuisMolBelgium

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