tailieunhanh - Disorders Techniques in Investigation and Diagnosis - part 6

Koenen của các khối u được chữa khỏi bằng cách cắt bỏ đơn giản. Thông thường, khâu không cần thiết. Khối u phát triển từ dưới nếp gấp móng tay gần được gỡ bỏ sau khi phản ánh các móng tay gần gấp lại bằng cách làm cho các vết mổ bên mỗi cọc một khoản tiền ở trên trục rãnh móng tay bê | Nail consistency 169 Figure Severe nail plate fragility after etretinate therapy before loss. Figure Nail apparatus amyloidosis. A text atlas of nail disorders 170 Figure Darier s disease with some nail plate loss. thin nail plate of any cause occupational disease for example working with industrial oils chronic arthritis leprosy hypothyroidism peripheral ischaemia peripheral neuritis hemiplegia cachexic states. In some cases of hapalonychia the thinned nails assumed a semi-transparent bluish-white hue sometimes described as eggshell nails . Nail fragility syndrome can be divided into six main types on morphological grounds 1 An isolated longitudinal split at the free edge which sometimes extends proximally. 2 This may result from onychorrhexis with shallow parallel furrows running on the superficial layer of the nail. 3 Multiple crenellated splitting which resembles the battlements of a castle. Triangular pieces may easily be torn from the free margin. 4 Lamellar splitting of the free edge of the nail into horizontal fine layers onychoschizia see Figures . This may occur alone or associated with the other types. 5 Transverse splitting and breaking of the lateral edge close to the distal margin. 6 Nail friability is observed in psoriasis onychomycosis and as adverse effect of nail varnish keratin granulations figure . The changes in brittle friable nails are often confined to the surface of the nail plate this occurs in superficial white onychomycosis and may be seen after the application of nail Nail consistency 171 polish or base coat which causes granulations in the nail keratin. In advanced psoriasis and fungal infection the friability may extend throughout the entire nail. The changes in nail consistency may be due to impairment of one or more of the factors on which the health of the nail depends for example variations in the water content or keratin structure and corneocyte adhesion. In addition changes in the intercellular .