par Pasch, Marcel;Haneke, Eckart;Baran, Robert;Thomas, Luc;Richert, Bertrand 
Référence Baran & Dawber’s Diseases of the Nails and their Management, wiley, page (675-824)
Publication Publié, 2018-01
Référence Baran & Dawber’s Diseases of the Nails and their Management, wiley, page (675-824)
Publication Publié, 2018-01
Partie d'ouvrage collectif
| Résumé : | The clinical differential diagnosis of many tumors in the nail area is difficult. The nail plate both covers the lesions and may influence the pattern of invasion. Most benign tumors cause nail and sometimes bone deformation due to chronic pressure on the matrix and/or on the distal phalanx. Tumors involving the proximal nail fold can cause pressure from above and produce longitudinal grooving or fissuring of the nail. Some tumors may occur under the matrix, exerting pressure upward and thus causing ridging, overcurvature, or even anonychia. Onycholysis may result when a tumor is located beneath or in the nail bed. Nail plate deformation most often denotes benign pathology because this reflects slow growth, while partial or total nail destruction may denote malignancy. |
