Ganglion Cyst of the Wrist on Ultrasound: Differentiation of Cystic Lesions
Ultrasound Appearance of Ganglion Cyst
According to Jacobson (2026), a dorsal wrist ganglion cyst appears in the axial plane as a hypoechoic multilobular structure with limited posterior wall enhancement (through transmission). On the volar wrist in short axis to the radial artery, the ganglion appears as an anechoic multilobular structure. The multilobular (multilocular) nature is specific to both ganglion and fibrocartilaginous cysts (parameniscal and paralabral); localization of the lesion aids in differentiation.
Examination Protocol
According to Griffith (2025), ultrasound is the best imaging tool and allows for the diagnosis of most ganglion cysts by tracing the stalk to the source joint.
Protocol recommendations:
- Trace the stalk towards the joint of origin;
- Consider that spread through the joint capsule is often not visualized;
- Examination in wrist flexion and extension may sometimes help;
- Note the relationship of the cyst to tendons and the neurovascular bundle;
- Evaluate with color Doppler to exclude anechoic solid lesion;
- Check for pericystic inflammation as a marker of recent leakage of contents.
Variant: DCSS Cyst
According to Griffith (2025), on transverse scanning, a more atypical, slightly echogenic ganglion may be visualized over the dorsoradial aspect of the wrist, covering the intact dorsal component of the scapholunate ligament — a pattern consistent with a dorsal capsuloligamentous scapholunate septum (DCSS) cyst.
Differential Diagnosis
| Lesion | Ultrasound Features |
|---|---|
| Ganglion Cyst | Anechoic/hypoechoic multilobular structure, stalk to joint, absence of blood flow, limited dorsal enhancement |
| Giant Cell Tumor of the Tendon Sheath | Solid soft tissue lesion, usually hyperemic, eccentrically located to the tendon sheath |
| Vascular Anomaly | Compressible |
| Fibrocartilaginous Cyst (Parameniscal/Paralabral) | Multilobular, in contact with fibrocartilage — by localization |
The key technique to exclude anechoic solid lesion is color Doppler mapping: the presence of internal blood flow indicates a solid (particularly tumorous) nature, whereas a true cyst is avascular.
Frequently asked questions
How to distinguish a ganglion from a giant cell tumor of the tendon sheath?
A giant cell tumor is a solid soft tissue lesion, usually hyperemic and eccentrically located to the tendon sheath; a ganglion is an anechoic/hypoechoic avascular lesion with a stalk to the joint (Griffith, 2025).
Why use color Doppler for a ganglion?
To exclude anechoic solid lesion: a true cyst is avascular, and the presence of internal blood flow indicates a solid nature (Griffith, 2025).
What does the multilobular nature of a lesion mean?
The multilobular appearance is specific to ganglion and fibrocartilaginous cysts (parameniscal and paralabral); localization helps differentiate — contact with fibrocartilage suggests a parameniscal/paralabral cyst (Jacobson, 2026).
How to find the source of a ganglion cyst?
Trace the stalk towards the joint of origin; spread through the joint capsule is often not visualized, and examination in wrist flexion and extension may help (Griffith, 2025).
What does pericystic inflammation indicate?
Pericystic inflammation serves as a marker of recent leakage of cyst contents (Griffith, 2025).