Dermal duct tumor is a rare, benign tumor. Clinically, dermal duct tumor presents as a firm papule, plaque or nodule, particularly on the lower limbs or head and neck region. Dermal duct tumor is been classified as poroma. Poroma can have divergent differentiation, but showing prominent ductal and sebaceous differentiation is rare. We present a case of dermal duct tumor with prominent ductal an...

A 65-year-old man presented with an asymptomatic lesion on the left parietal scalp of 6 months’ duration. Three years prior, a cylindroma on the same area was excised by a general surgeon. Physical examination revealed a solitary 6 mm salmon-pink, firm, dome-shaped papule on the left parietal scalp (Figure 1). Dermatoscopic evaluation showed arborizing telangiectasia and several scattered white...

Observations: Porokeratosis is a dyskeratotic disorder of the skin characterized by hyperkeratotic papule or plaque with an annular appearance and usually diagnosed easily, both histopathologically and clinically. We present a case of linear porokeratosis which was most likely suggesting the linear epidermal nevus and linear lichen planus. We observed a tiny brown border in the dermoscopic exam...

chest owing to the pain caused by movement of the pectoral muscles. The axillary glands were slightly enlarged. The patient said he was bitten by a rat about fifteen days before. In about four days a small red papule appeared at the site of injury. This became pustular and burst, producing a small ulcer the size of an eight-anna piece, which subsequently increased in size. He then applied quick...

PEN also known as ‘solitary circumscribed neuroma’ is an uncommon, sporadic, cutaneous, benign, intraneural tumor, which usually presents as asymptomatic, solitary or multiple, firm, rubbery, skin-coloured or pink, papule or nodule, commonly localized on the face or close to a muco-cutaneous junction in middle aged adults with equal sex preponderance [1]. It was first described by Reed et al in...

Dermatofibromas are very common skin tumors. Their typical presentation is as a slow-growing, firm, solitary papule. They have been described histopathologically as a reaction of the connective tissue of the skin or as a benign neoplasm. Cases of these tumors metastasizing to the lung were first reported in 1990. Since then 12 cases with similar characteristics have been reported worldwide. We ...

Sir, Abnormal keratinization of the distal part of the hair follicle can prevent emergence of the growing hair from the follicle and lead to spiral growth within a hyperkeratotic papule, socalled ``rolled hairs'' (1). Rolled hairs have been reported in patients with keratosis pilaris (1), neurodermatitis (1), palmoplantar keratoderma (2), and hypertrichosis (3). The disorder has also been assoc...

Trichoepitheliomas are uncommon benign adnexal neoplasms that originate from the hair follicles. Multiple familial trichoepithelioma constitute an autosomal dominant disease characterized by the appearance of multiple flesh-colored, symmetrical papules, tumors and/or nodules in the central face and occasionally on the scalp. Although clinical diagnosis is usually straightforward in light of the...

Congenital self-healing reticulohistiocytosis is a rare, congenital, benign, self-healing variant of Langerhans cell histiocytosis. It usually appears as multiple papules or nodules; however, occurrence of the solitary type is very rare. We report on a case of solitary congenital self-healing reticulohistiocytosis in a 29-day-old girl who presented with a papule on her sole. Two months later, t...

The histopathology of Gottron's papules has not been often reported. Morphological descriptions of these lesions are mainly focused on changes of the epidermis and interface, and on the nature of the inflammatory infiltrate. Dilated vascular vessels of Gottron's papules are rarely mentioned in the literature. We studied these vessels in a biopsy specimen obtained from Gottron's papule in a 65-y...