Intraosseous ganglion cyst of the lunate represents a rare phenomenon and when present they are rarely symptomatic. Symptomatic cyst usually present with diffuse dorsal wrist pain or ulnar sided wrist pain and mimic Kienbock disease. There have also been case reports of extensor tendon injury due to pathological fractures of the lunate secondary to intraosseous ganglion cyst. Radiologically the entity is usually distinguishable from kienbock disease and its differential diagnoses. Although the clinical presentations are similar having detailed knowledge of the radiological features will avoid diagnostic pitfalls.
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