1/6. Bilateral type of nevus of ota presenting as agminated lentigines.We report a 30-year-old female patient with a history of hyperpigmented macules of the face since the age of 7 years. The clinical appearance, brown macules in multiple segmental or grouped patterns, was suggested to be agminated lentigines. However, histologic examination of the pigmented macule revealed scattered melanocytes within the dermis. We diagnosed this lesion as a bilateral type of nevus of ota presenting as agminated lentigines. The differential diagnosis from acquired bilateral nevus of ota-like macules was made.- - - - - - - - - - ranking = 1keywords = dermis (Clic here for more details about this article) |
2/6. A giant melanocytic nevus treated with combined use of normal mode ruby laser and Q-switched alexandrite laser.We report a combination procedure that can improve the effectiveness of laser removal of giant congenital melanocytic nevi (CMN). A 2-year-old girl with a giant CMN was seen in our outpatient clinic. Histological findings showed a compound nevus without any evidence of malignancy or dysplastic changes. The patient was treated with the normal mode ruby laser and Q-switched alexandrite laser. The lesion was significantly improved in color and cosmetic appearance. Partial hypopigmentation and texture changes were observed. Histological findings showed a marked decrease in the number of junctional melanocytes and the nests in the papillary and reticular dermis. The combined laser treatment is an effective method for the treatment of giant CMN, but further study is warranted to follow-up questions of recurrence and malignant change.- - - - - - - - - - ranking = 1keywords = dermis (Clic here for more details about this article) |
3/6. Q-switched ruby laser treatment of nevus of ota.Emission of 694-nm laser energy from a Q-switched ruby laser causes photodestruction of cutaneous pigment. The 40-nanosecond pulse duration of Q-switched ruby laser light initiates specific damage to melanosomes thus allowing selective treatment of benign pigmented lesions. nevus of ota is a benign facial oculocutaneous melanosis that has melanosomes lying deeply within the dermis. We report the successful use of the Q-switched ruby laser in the treatment of two patients with the nevus of ota.- - - - - - - - - - ranking = 1keywords = dermis (Clic here for more details about this article) |
4/6. Acquired, bilateral nevus of ota-like macules (ABNOM) associated with Ota's nevus: case report.Ota's nevus is mongolian spot-like macular blue-black or gray-brown patchy pigmentation that most commonly occurs in areas innervated by the first and second division of the trigeminal nerve. Acquired, bilateral nevus of ota-like macules (ABNOM) is located bilaterally on the face, appears later in life, is blue-brown or slate-gray in color. It is not accompanied by macules on the ocular and mucosal membranes. There is also debate as to whether ABNOM is part of the Ota's nevus spectrum. We report an interesting case of ABNOM associated with Ota's nevus. A 36-yr-old Korean women visited our clinic with dark bluish patch on the right cheek and right conjunctiva since birth. She also had mottled brownish macules on both forehead and both lower eyelids that have developed 3 yr ago. skin biopsy specimens taken from the right cheek and left forehead all showed scattered, bipolar or irregular melanocytes in the dermis. We diagnosed lesion on the right cheek area as Ota's nevus and those on both forehead and both lower eyelids as ABNOM by clinical and histologic findings. This case may support the view that ABNOM is a separate entity from bilateral Ota's nevus.- - - - - - - - - - ranking = 1keywords = dermis (Clic here for more details about this article) |
5/6. Treatment of nevus of ota with autologous-cultured epithelium grafting combined with dermabrasion.nevus of ota is an anomaly of the dermal melanocytes, which lies primarily in the deep dermis. It causes discoloration of the face and induces a remarkable disfigurement to the patients. This report demonstrates the favorable results of 3 male patients treated with autologous-cultured epithelium grafting combined with dermabrasion. The lesions on the cheek, forehead, and temple were dermabraded to the deep dermal layer. The cultured epithelium obtained from preauricular skin or medial upper arm were grafted on the wounds. The grafts took well, and most of the grafted site healed after 1 week. Facial appearances improved remarkably. There was minimal scar formation and minimal recurrence of nevus cell. After long-term follow-up, the grafted sites resembled the adjacent normal face skin in terms of appearance and texture.- - - - - - - - - - ranking = 1keywords = dermis (Clic here for more details about this article) |
6/6. Treatment of nevus Ota: combined skin abrasion and carbon dioxide snow method.Thirty-seven patients with nevus Ota were treated by skin abrasion-carbon dioxide snow therapy. Data obtained from 24 patients (including 5 infants) who completed treatment were analyzed to determine the number of treatment courses and to assess the outcome by color and histologic type. The 5 infants completing treatment received a mean of 10 courses of carbon dioxide snow therapy. Excluding these infants, the mean number of treatment courses was 3 for skin abrasion and 16 for carbon dioxide snow therapy. The therapeutic outcome was satisfactory, being graded as "excellent" in 6 patients, "excellent to good" in 6 patients, "good" in 10 patients, and "fair" in 2 patients. None of the patients had a "poor" outcome. Darker lesions were generally less responsive to treatment. Lesions with melanocytes in the superficial dermis showed a better response with fewer courses of treatment. Those with melanocytes throughout the whole dermis generally had a poorer outcome. The results confirm that the benefits of this procedure are limited by the associated pain and the need for great skill and a long treatment duration.- - - - - - - - - - ranking = 2keywords = dermis (Clic here for more details about this article) |