Incisional biopsy and punch biopsy

Foot Punch Biopsy

It is essential to have a working clinical diagnosis, but wherever there is doubt the pathologists can provide much more precise information regarding the nature and extent of the lesion. For example, a patch of Bowen's disease intraepidermal carcinoma may resemble sclerosing superficial basal cell carcinoma and a biopsy will usually distinguish them. Similarly, what seems to be a dysplastic pigmented naevus clinically may, on the one hand, prove to be benign or, on the other hand, turn out to...

Seborrhoeic dermatitis

Distribution Pattern Lichen Planus

Seborrhoeic dermatitis has nothing to do with sebum or any other kind of greasiness. There are two distinct types, adult and infantile. The adult type is more common in men and in those with a tendency to scaling and dandruff in the scalp. There are several commonly affected areas Seborrhoeic dermatitis affects the central part of the face, scalp, ears, and eyebrows. There may be an associated blepharitis, giving some red eyes and also otitis externa. The lesions over the sternum sometimes...

Pityriasis versicolor

Pityriasis versicolor is a skin eruption that usually develops after sun exposure with white macules on the tanned skin but pale brown patches on the covered areas, hence the name versicolor, or variable colour. The lesions are a flat b only partially depigmented areas of vitiligo are totally white and c do not show inflammation or vesicles. The causative organism is a yeast, Pityrosporum orbiculare, that takes advantage of some unknown change in the epidermis and develops a proliferative,...