[Vitiligo occurring on dermal melanocytosis (nevus of Ota) in a dark-skinned patient]. / Vitiligo dévéloppé sur une mélanocytose dermique (nævus de Ota) chez une patiente à peau foncée.

BACKGROUND: Nevus of Ota is a rare disease most frequently found in Asians. It presents clinically as a bluish gray hyperpigmentation of one side of the face. Transformation into melanoma and glaucoma are the main risks. The appearance of vitiligo lesions with poliosis within a nevus of Ota is exceptional. PATIENTS AND METHODS: A 22-year-old female patient with a nevus of Ota consulted for depigmentation of the eyelashes. Physical examination revealed hyperpigmentation in the right orbitofrontal part of her face, achromic macules and eyelash poliosis. A diagnosis was made of vitiligo developing on a nevus of Ota. Ophthalmologic examination showed hyperpigmentation of the sclera. Regular dermatologic and ophthalmologic follow-up was instituted. DISCUSSION: Vitiligo is a condition characterized by the development of depigmented lesions secondary to chronic degradation of the melanocytes of the epidermis and the follicles. Its occurrence on congenital nevus and melanoma has already been reported. However, its appearance in dermal melanocytosis is very rare. Since the first observation of this association in 1979, only 4 other cases have been reported. The pathogenic mechanisms of this association are still poorly understood. Histopathological examination generally shows a loss of epidermal melanocytes, especially in the basal layer, while dermal melanocytes remain unaffected. In this context, vitiligo developed on dermal melanosis appears to result from the difference between the properties of normal (epidermal) melanocytes and ectopic (dermal) melanocytes. CONCLUSION: Association of vitiligo with nevus of Ota is rare. Herein, we report a new case in a dark-skinned subject.

[Umbilical endometriosis mimicking a keloid in a young black woman: A case report]. / Endométriose ombilicale simulant une chéloïde chez une patiente à peau foncée.

BACKGROUND: Most umbilical tumors are diagnosed as benign tumors, umbilical metastases of abdominal and pelvic tumors, or Sister Marie Joseph nodule. Herein, we report a case of cutaneous umbilical endometriosis mistaken for a keloid. PATIENTS AND METHODS: A young black woman aged 26 consulted for a painful umbilical tumefaction. She had noted the appearance of a nodule of the umbilicus 10 months ago with bleeding during her menstrual periods. Skin examination revealed a firm and painful umbilical nodule 2.5cm in diameter. She was treated with corticosteroid injections for one month for umbilical keloid. Given that the symptoms recurred regularly at the time of menstruation, we suspected umbilical endometriosis. This diagnosis was finally confirmed by histopathological examination and hormone therapy was instituted on gynecological advice before scheduled surgical excision. CONCLUSION: In a setting of an umbilical tumor simulating a keloid associated with cyclical symptoms in a black woman, the diagnosis of umbilical endometriosis should not be overlooked by the dermatologist.

[Newborns dermatitis: about 116 cases collected in a university hospital in abidjan]. / Les dermatoses neonatales : a propos de 116 cas colliges dans un hopital universitaire d'abidjan.

AIMS: To determine the epidemiological profile of newborn dermatitis and to describe the different clinical aspects of the observed neonatal dermatitis. PROCEDURE: The study took place at the University Hospital of Cocody (Abidjan). The study was cross-sectional, descriptive and analytical, carried out on the basis of prospective recruitment. The study included newborns who were seen in outpatient or inpatient settings by 4 april 2018 to 23 August 2018 and in whom the pediatrician had observed cutaneous and/or mucosal lesions. The diagnosis was made with the collaboration of a dermatologist. RESULTS: During the study period, 116 newborns were identified. The age of the patients seen in pediatrics with dermatitis varied from 1 to 28 days, with a mean of 16.86 ± 8.4 days. The median age was 19 days. The most representative age range (32.8%) was 24-28 days. The sex ratio (M/F) was 1. In almost 2/3 of the cases, the children were born at term, 29.3% were premature and 5.2% were born after term. In almost 2/3 of the cases (63.8%), the newborns had a birth weight of more than 2500 g. Only 3.4% of newborns seen in pediatric consultations were referred for a dermatitis. The age of the lesions at the time of consultation varied from 1 to 26 days, with a mean of 06.19 days ± 5.13. In more than half (53.5%) of the cases, the lesions had evolved for less than 5 days. Transient dermatitis was more frequent (51.7%), followed by infectious dermatitis (32.8%). Transient dermatitis of the newborn was dominated by sweaty miliaria (40%). Infectious dermatitis were mainly represented by mycotic (68.4%) and bacterial (31.9%) infections. Bacterial dermatitis were composed of neonatal impetigo (83.3%) and folliculitis (16.7%). In almost half of the cases (46.1%) the mycotic dermatitis were represented by candidosis intertrigo and in 38.5% of the cases there was oral candidiasis. The other neonatal dermatitis observed were dominated by diaper rash (64.3%) (Photo 2) and congenital nevi (21.5%). More than half (57.1%) of the cases of toxic erythema neonatorum occurred between days 6 and 10 of life. Nearly half (41.6%) of the cases of sudoral miliaria occurred between birth and day 5 of life. More than half (57.1%) of the cases of sebaceous hyperplasia occurred before the 5th day of life. All cases of neonatal scaling and mongoloid spots were already present between birth and day 5 of life. The mean age of patients with transient dermatitis was 14.31 days compared with 19.41 days for those with the other dermatitis. The difference in age was statistically significant (p < 0.05). The transient dermatitis predominated in male neonates while the other dermatitis predominated in females, however the difference observed at the level of sex was not statistically significant (p > 0.05). CONCLUSION: The diagnosis of neonatal dermatitis is not always obvious, especially on black skin where few publications have been published.

OBJECTIFS: Déterminer le profil épidémiologique des dermatoses du nouveau-né et de décrire les différents aspects cliniques des dermatoses néonatales observées. MATÉRIEL ET MÉTHODES: L'étude s'est déroulée au Centre hospitalier universitaire de Cocody (Abidjan). L'étude était transversale, à visée descriptive et analytique, réalisée sur la base d'un recrutement prospectif. Ont été inclus, les nouveau-nés ayant été vus en consultation externe ou en hospitalisationdu 4 avril 2018 au 23 août 2018 chez qui le médecin pédiatre avait observé des lésions cutanées et/ou muqueuses.Ensuite,le diagnostic était posé par le dermatologue référant de l'étude. RÉSULTATS: Pendant la période d'étude, 116 nouveau-nés ont été recensés. La moyenne d'âge était 16,86 ± 8,4 jours avec un âge médian de 19 jours. Lesex ratio (H/F) était de 1. Dans plus de la moitié (53,5%) des cas, les lésions évoluaient depuis moins de 5 jours. Une dermatose transitoire était diagnostiquée dans plus de la moitié des cas (51,7%) et dans près du tiers des cas (32,6%) une dermatose infectieuse. Les dermatoses transitoires du nouveau-né étaient dominées par la miliaire sudorale (40%), l'érythème toxique (23%), la desquamation néonatale (10,7%) et l'hyperplasie néonatale (10,7%).Les taches mongoloïdes représentaient3,3% des cas. Les dermatoses infectieuses étaient essentiellement représentées par des infections mycosiques (68,4%) et bactériennes (31,6%). Les autres dermatoses néonatales observées étaient dominées par dermite du siège (64,3%) et les nœvi congénitaux (21,5%). Plus de la moitié (57,1%) des cas d'érythème toxique néonatal survenaient entre le 6e et le 10e jour de vie. L'âge moyen des patients présentant une dermatose transitoire était de 14,31 jours contre 19,41 jours pour ceux présentant les autres dermatoses. La différence observée au niveau de l'âge était statistiquement significative (p < 0,05). CONCLUSION: Les dermatoses néonatales sont multiples et variées. Certaines sont transitoires, ne nécessitant pas toujours de prise en charge thérapeutique. Leur diagnostic n'est pas toujours évident pour le pédiatre d'où la nécessité d'une étroite collaboration entre pédiatres et dermatologues afin d'améliorer la démarche diagnostique et parfois thérapeutique.

Melanoma of the Right Foot Simulating Kaposi's Disease.

Melanoma is a malignant tumor rarely being described in sub-Saharan Africa. We reported an unusual and atypical clinical presentation. It was a 59-year-old patient who was hospitalized for a monomelic black tumor evolving for 10 years. Histopathological examination confirmed the melanocytic origin of this tumor. Paraclinical assessment did not find any visceral metastasis. A partial resection of the tumor was performed. The patient left the hospital against medical consent due to lack of technical facilities. The delay in the consultation and the lack of knowledge of melanoma by doctors and patients might contribute to the severity and the difficulties of its management.