Nevus comedonicus is an uncommon variant of adnexal hamartoma and is considered a rare subtype of epidermal nevi. It was first described in 1895 by Kofmann who used the term “comedo-nevus”. It manifests as a group of closely dilated follicular openings with dark keratin plugs resembling comedones. Both unilateral and bilateral distributions are seen. The face is the most commonly affected site ...

invasive apocrine carcinoma (iac) of the breast is a rare subtype of breast malignancy. its incidence is not well known, but it is approximately less than 1% to 4%. for these reasons, there are few reports and little information on the radiologic appearance of iac. furthermore, most of the case reports show malignant features which are similar to invasive ductal carcinoma (idc). we present a ra...

Nevus comedonicus is a type of hamartoma that arises from a developmental anomaly of the mesodermal part of the pilosebaceous gland. In most cases of nevus comedonicus, an acne-like skin condition develops. Repeated inflammation can cause a morphological change to the cyst, papule, to abscess. We experienced a case of congenital nevus comedonicus, which led to the formation of large multiple cy...

The so-called dysplastic nevus first entered medical parlance in 1980 [1], originally known as the B-K mole in 1978, only to evolve over the next 34 years into a variety of names including familiar and atypical sporadic mole, melanocytic nevus with persistent lentiginous melanocytic hyperplasia, junctional or compound nevus with architectural atypia/disorder with or without cytological atypia, ...

sebaceous carcinoma is a relatively rare cutaneous tumor that is most commonly derived from the sebaceous glands located in periorbital area. the extraocular occurrence of this tumor is very rare. we report a case of an 85 years old woman who presented with a slowly enlarging mass on the right temporal region. histological examination of the lesion revealed a malignant sebaceous carcinoma occur...

Tne distribution or cnonnesterase in tne numan sion nas been studied by several investigators, with particular attention to the nerve fibers around the sweat gland (H u r le y, Shelly and Koelle, 1953, Hellmann, 1955, and Montagna and Ellis, 1958). No cholinesterase-positive nerve fibers have been found around the apocrine sweat gland by these investigators, even though a physiological examinat...

Nevus comedonicus is an uncommon skin abnormality characterized by an aggregation of dilated follicular orifices filled with keratinous material. Nevus comedonicus is occasionally complicated with other conditions including cataracts, skeletal defects, central nervous system abnormalities or other extra-cutaneous diseases (nevus comedonicus syndrome). Although most cases of nevus comedonicus oc...

The purpose of this study was the clinical and histo-immunohistochemical analysis of two cases: a cutaneous pigmented facial malignant melanoma and a lumbar congenital nevus with malignant transformation. A series of clinical elements raised the suspicion of some malignant melanocytic lesions and the histopathological analysis through the paraffin embedding technique confirmed the clinical susp...