Polydactyly, rudimentary Q69.9

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

accessory finger; Finger accessory; Finger more rudimentary; Fingerrudiment; vestigial finger

Definition
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Minus variant of a polydactyly in the form of a skin-coloured, congenital nodule, usually located ulnarly at the base of the little finger. Due to its histological richness in nerve fibres, the disease is sometimes also attributed to true cutaneous neuroma.

Localization
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Base or middle of the base phalanx of the little finger, usually on both sides.

Clinical features
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Tumour the size of a pea or bean, own papillary ridge pattern, sometimes surplus nails.

Histology
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Numerous nerve fibres, tactile corpuscles, sometimes cartilage tissue.

Differential diagnosis
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Disclaimer

Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 29.10.2020