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Subungual keratoacanthoma: ultrasound and magnetic resonance imaging findings |
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| Authors: | Joon Hyuk Choi Dong Hoon Shin Duk Seop Shin Kil Ho Cho |
| Affiliation: | (1) Department of Pathology, Yeungnam University College of Medicine, 317-1, Daemyung-Dong, Nam-Gu, Daegu City, 705-717, South Korea;(2) Department of Dermatology, Yeungnam University College of Medicine, Daegu, South Korea;(3) Department of Orthopedic Surgery, Yeungnam University College of Medicine, Daegu, South Korea;(4) Department of Diagnostic Radiology, Yeungnam University College of Medicine, Daegu, South Korea |
| Abstract: | Subungual keratoacanthoma is a rare, squamoproliferative neoplasm arising at the nail bed. It may cause erosion of the underlying bone. We report a case of subungual keratoacanthoma of the right thumb in a 63-year-old man. Radiographs showed cortical erosion of the distal phalanx of the right thumb. Ultrasonography showed a mixed echoic tumor. On magnetic resonance imaging (MRI), the tumor showed intermediate signal intensity on T1-weighted images and mixed intermediate and high signal intensity on T2-weighted images with peripheral thin rim enhancement. |
| Keywords: | Subungual keratoacanthoma Magnetic resonance imaging Ultrasound |
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