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An intratendinous epidermoid cyst after trauma
1Department of Surgery and Orthopaedics, UCLA.
The Journal of Hand Surgery
|May 1, 1990
Summary
A rare intratendinous epidermoid cyst was surgically removed from a patient's finger tendon. This is the fourth reported case, and the first linked to prior tendon injury.
Area of Science:
- Orthopedic Surgery
- Hand Surgery
- Pathology
Background:
- Epidermoid cysts are typically found in the skin.
- Intratendinous inclusion cysts are rare, with few documented cases.
- Traumatic tendon injuries can lead to complex soft tissue complications.
Observation:
- A 55-year-old male presented with a growing mass in the proximal finger segment.
- The mass was associated with a previously traumatized and repaired flexor digitorum profundus tendon.
- Surgical removal revealed a large epidermoid cyst embedded within the tendon fascicles.
Findings:
- The excised mass was confirmed as an intratendinous epidermoid cyst.
- This case marks the fourth reported instance of an intratendinous inclusion cyst in the English literature.
- Crucially, this is the first documented case of such a cyst associated with traumatic tendon damage.
Implications:
- This case expands the understanding of rare tendinous pathologies.
- Highlights the potential for epidermoid cyst formation secondary to tendon trauma and repair.
- Suggests considering inclusion cysts in the differential diagnosis of finger masses following tendon injury.