Detaillierte Beitrags-Information
| Beitragstitel | Intraosseus epidermal cyst of the distal phalanx of the thumb: A rare finding |
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| Beitragscode | P108 |
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| Präsentationsform | Poster |
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| Abstract |
Introduction: Intraosseous epidermal cyst are rare benign tumours that have been described in skull, toes and fingers. Case presentation: A 53-year-old woman presents a history of one month of pain and swelling of the distal phalanx of the thumb with no recent trauma associated. No other significant illnesses except a wound suture at the same location 20 years previous and a similar episode of pain and swelling 5 years previous, with spontaneous resolution of the symptoms. The initial examination shows a swollen distal phalanx, painful to the touch and a dystrophic nail but no restriction in range of motion of the interphalangeal joint. The standard x-rays show an ostéolythic lesion of the distal phalanx with cortical thinning and no joint invasion. An MRI was performed to confirm the nature of the tumour. Results: We chose to perform a surgical curettage of the tumour. The histomorphologic exam performed shows an intraosseous epidermal cyst. We treated the patient with standard wound care, free range of motion and direct pressure avoidance. The outcome was a complete pain relief with no complications associated. Conclusion: Little is known about the pathogenesis of these tumours. However, a previous trauma with bone infiltration of epidermal tissue has been suggested. A malignant lesion should be suspected in the differential diagnosis. The best surgical treatment option remains curettage with or without bone graft in symptomatic cases. |