Supernumerary digit of bilateral hands: a rare congenital anomaly presented as a case report

Abnormalities in the development of hands and fingers are caused by faulty signaling centers, together with or without abnormal production of important regulatory proteins. One of those abnormalities is the supernumerary digit. Postaxial supernumerary digit can present as a functioning or a nonfunctional digit. CASE: We describe a case of a 29-year-old male with a postaxial supernumerary digit of the ulnar aspect of the bilateral fifth digit. CLINICAL FINDINGS AND INVESTIGATIONS: The patient had a growth of 0.5 cm over the ulnar aspect of the proximal phalanx of the fifth digit of the right hand and 0.1 cm over the ulnar aspect of the proximal phalanx of the fifth digit of the left hand with a broad base. X-rays of bilateral hands were sent. INTERVENTION: Suture ligation or surgical excision was recommended for the patient, but they were both rejected by the patient. CONCLUSION: Bilateral hands with supernumerary digits are a rare congenital defect. The differential diagnosis of digital fibrokeratoma should be used by doctors. Simple observation, suture ligation, or excision with skin sutures are examples of potential treatments.