Case 1: An area of pigment loss in the skin and surrounding hair is noted on the head of a 10-year-old boy. Examination of the vertex of the scalp reveals a nevus encircled by depigmentation. Can you identify this lesion? Case 2: During a routine skin examination, a suspicious-looking pigmented lesion is noted on the upper back of a 27-year-old man. The 4-cm, irregularly shaped lesion is compos...

Porokeratotic Eccrine Ostial and Dermal Duct Nevus (PEODDN) is a rare disorder of keratinization that clinically resembles comedo nevus but occurs on the palms and soles and is characterized by cornoid lamella in the histopathology. We hereunder report a young male with mildly itchy papules on the lateral surface of the left foot who was diagnosed with PEODDN upon biopsy of the lesion. We brief...

Syringocystadenoma papilliferum is an uncommon benign apocrine gland tumour, mostly of congenital or early childhood onset, affecting head and neck. In addition, nevus sebaceous is commonly associated with this tumor. Here, we document three cases of syringocystadenoma papilliferum with many atypical features, such as the involvement of rare sites (abdomen, axilla and thigh), absence of nevus s...

Blue nevi are uncommon, asymptomatic lesions of the uterine cervix. These lesions are not often detected clinically or on colposcopy. Careful histopathological examination is required. The nevus cells are said to originate from the immature melanoblasts of the neural crest. These lesions need to be differentiated from malignant melanoma and melanosis of the cervix. We present here a case report...

Nevus sebaceous is known by its association with one or more secondary tumors, but more than three multiple tumors arising from a nevus sebaceous is extremely rare. A 67-year-old female presented with a light brown plaque on the back of her head that contained a dome-shaped black node and an erosive lesion. Histopathological examination showed atypical basaloid cells in the black node. At the p...

Nevus sebaceus of Jadassohn is a congenital cutaneous hamartoma comprised of multiple skin structures. It has the potential to develop into variety of neoplasms of various epidermal adnexal origins. While multiple tumors may occasionally arise, it is unusual for more than four tumors to arise simultaneously within a single sebaceus nevus. Here in, we report a case of a 70-year-old woman with si...

Congenital melanocytic nevus consists of congregations of nevomelanocytes. It is found in approximately 1% of new born infants. Congenital melanocytic nevus needs to be excised before it transforms into a malignant lesion. Many strategies have been attempted for the removal and reconstruction of the nevus. Serial excision enables wound closure to be accomplished with a shorter scar than if the ...

Lentigines are usually flat, pigmented macules on the skin and mucosa. These lesions are characterized by mostly smaller than 0.5 cm, irregular borders and different shades of brown and black. They can be in the form of circumscribed or widespread lesions, and occur either as isolated lesion or as a part of some congenital syndromes. The speckled lentiginous nevus is also named as Nevus Spilus ...

The most common and well known is nevus Sutton or halo nevus first described in medical journals in 1916, where a hypopigmented area develops around a pre-existing melanocytic nevus. Halo nevi undergo specific sequelae: In Stage I the nevus remains brown, in stage II its pigment can disappear leading to a pink-colored papule. In stage III the central papule disappears, leading to a circular are...