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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Most common tumor in hand -
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The correct answer is  "Enchondromas are most common type of hand tumor". -- Orthopaedics oncology.

Phalanges of hand are involved most commonly and the proximal phalanx is the most common site.