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Subungual glomus tumors: evaluation with MR imaging
J L Drapé1, I Idy-Peretti, S Goettmann
1Department of Radiology, Hôpital Bichat, Paris, France.
Radiology
|May 1, 1995
Summary
Magnetic resonance (MR) imaging effectively identifies subungual glomus tumors, aiding in precise pre-operative localization. This imaging technique helps differentiate tumor subtypes and assess their impact on surrounding structures.
Area of Science:
- Radiology
- Oncology
- Dermatology
Background:
- Subungual glomus tumors are rare, often presenting with characteristic pain.
- Accurate diagnosis and localization are crucial for successful surgical excision.
Purpose of the Study:
- To characterize the magnetic resonance (MR) imaging features of subungual glomus tumors.
- To evaluate the utility of MR imaging in differentiating glomus tumor subtypes and assessing their extent.
Main Methods:
- MR imaging was performed at 1.5 T in 31 patients with suspected glomus tumors and 10 controls.
- Histologic correlation and measurement of relaxation times were conducted.
- Gadoterate meglumine contrast enhancement was utilized in 19 patients.
Main Results:
- MR imaging detected 27 of 28 pathologically confirmed glomus tumors.
- Tumor subtypes (vascular, solid, myxoid) were differentiated based on relaxation times and enhancement.
- Nail matrix compression was observed in 13 cases, and peripheral capsules were noted.
Conclusions:
- MR imaging is a valuable tool for accurately defining the location and limits of subungual glomus tumors.
- The findings can guide surgical planning and improve patient outcomes.