Subungual exostosisD16.9

Author:Prof. Dr. med. Peter Altmeyer

All authors of this article

Last updated on: 15.09.2022

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Synonym(s)

Fibroosseous pseudotumour of the finger; subungual exostosis; Subungual exostosis; Subungual osteochondrome

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HistoryThis section has been translated automatically.

Dupuytren, 1847

DefinitionThis section has been translated automatically.

Benign bone tumour occurring in one or more teeth; in case of para- or subungual occurrence, deformation of the terminal phalanx with disturbances of nail growth.

ClassificationThis section has been translated automatically.

Type I: Congenital subungual exostoses, mainly on the big toe (more rarely other toes) of women. First manifestation usually between 20 and 30 years of age.

Type II: Acquired subungual exostoses, especially in the big toe of women. First manifestation at a higher age. Less frequent is the localization on the fingers. Cause either unknown or intermittent, locally acting traumas.

ManifestationThis section has been translated automatically.

Predominantly occurring in adolescents or young adults.

Clinical featuresThis section has been translated automatically.

Firm, subungual node, maximum 0.5 cm in size, which protrudes the nail plate due to growth and reactively leads to growth disorder of the nail. Pain due to pressure of the footwear.

HistologyThis section has been translated automatically.

Cell- and fiber-rich connective tissue with variable myxoid to sclerotic texture with transition from vascularized columnar cartilage to vascularized, trabecular bone Molecularly, a t(X;6)(q24-26;q15-15) translocalization will be detected (Wilk M et al. 2018).

TherapyThis section has been translated automatically.

Surgical ablation by orthopaedists.

LiteratureThis section has been translated automatically.

  1. Da Cambra MP et al (2014) Subungual exostosis of the toes: a systematic review. Clin Orthop Relat Res 472:1251-1259
  2. Damron TA (2014): Subungual exostosis of the toes: a systematic review. Clin Orthop Relat Res 472:1260-1261
  3. Wilk M et al (2018) Mesenchymal and neuronal tumors. In: Plewig G et al (ed.) Braun-Falco`s Dermatology, Venerology and Allergology. Springer publishing house SS 1887-1919
  4. Ward CM et al (2013) Subungual exostosis of the finger: case report and review of the literature. Iowa Orthopedic J 33:228-231

Authors

Last updated on: 15.09.2022

Author: Prof. Dr. med. Peter Altmeyer