A 61-year-old female patient, with obesity and distal interphalangeal joint (DIPJ) osteoarthritis (OA) radiologically documented, presented with a painful and insidious swelling on the third finger that had appeared 15 days ago. She described significant pain only when touched, decreased range of motion, and denied spontaneous drainage, previous trauma, colour changes, or insect bite. Moreover, she reported a similar presentation in the past. On palpation, the swelling was painful, firm and not mobile. Heberden nodes were visible. Given the past medical history, the diagnosis of digital mucous cyst (DMC) was made.

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