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Musculoskeletal and Sports Medicine

Use of Diagnostic Ultrasound to rule out Ganglion Cyst as cause of Nerve Compression

Saturday, October 25, 2025
12:00 PM - 1:30 PM MT
Location: Kiosk 3

    Co-Author(s)

  • AV

    Ankur Verma, DO

    Sports Medicine Fellowship Director
    University of Illinois-Chicago
    Chicago, Illinois

    • Poster Presenter(s)

  • Brett Segobiano, Other

    Medical Student
    University of Illinois College of Medicine At Chicago
    Chicago, Illinois

    • Co-Author(s)

  • NM

    Neneyo Mate-Kole, MD

    Resident Physician
    Schwab Rehabilitation Hospital & Care Network/University of Chicago PM&R Program
    Chicago, Illinois

Disclosure(s):
Brett Segobiano, Other: No financial relationships to disclose
Neneyo Mate-Kole, MD: No financial relationships to disclose
Case Diagnosis: Patient evaluated for possible ganglion cyst.

Case Description or Program Description: Patient is a 61 year old who presented to sports medicine clinic with a volar forearm mass concerning for ganglion cyst. He stated that he noticed the mass about 5-6 years ago. It enlarged in size during that time. It caused paresthesias into the hand, most commonly into the ring and small fingers. He noted slight tenderness to touch. There was no known history of malignancy.

Setting: Outpatient Sports Medicine Clinic

Assessment/Results: Limited diagnostic ultrasound that revealed a hyerechoic mass on the ulnar aspect of the volar wrist that appeared to be compressing on the ulnar nerve and surrounding tendons. There was vascular flow with doppler. There was also sonopalpation pain. MRI was ordered, which revealed enhancing ovoid lesion at the ulnar aspect of the distal forearm that may represent peripheral nerve sheath tumor. Biopsy by interventional radiology confirmed peripheral sheath tumor.

Discussion (relevance): A benign schwannoma is a non-cancerous tumor that grows on the nerves. It is formed by Schwann cells, which are cells that support and protect the nerves. Most schwannomas typically do not require treatment. However, if a schwannoma is growing rapidly or causing symptoms, it may be removed surgically. In this patients case, he was referred to orthopedic surgery, and had the volar mass surgically excised. After the procedure, he had mild numbness, but improvement of pain symptoms.

Conclusions: Diagnostic ultrasound can be a valuable tool to gather information about the cyst's size, shape, location, echogenicity, and relationship to surrounding structures. With confirmation of the visualized structure, it can guide next best step in management.