Follicular Becker's nevi: A case series and review of literature.

The follicular variant of Becker's nevus is an under-reported entity. We present the rare occurrence of follicular Becker's nevus in 7 patients, confirmed through dermoscopy and histopathological examination. Dermoscopy shows perifollicular hypopigmentation surrounded by a well-defined net-like pigmentation corresponding clinically to the presence of folliculocentric macules. Histology shows prominent basal and suprabasal melanization surrounding the follicle, corresponding to well-defined net-like pigmentation seen on dermoscopy. However, the melanization does not extend along the entire length of the follicular epithelium leading to perifollicular hypopigmentation on dermoscopy. Though biopsy is confirmatory, it is not usually necessary.

Becker's Nevus on Face Misdiagnosed as Whiskers.

Becker's nevus (BN) is a kind of epidermal cutaneous hamartoma. A noticeable hyperpigmented patch with a big, unilateral, hyperpigmented macule and irregularly shaped borders is the manner in which BN often presents. In this case, a 16-year-old boy has asymptomatic dark brown colored follicular macule on the left side of the cheek shortly after birth. The lesions were initially inconspicuous but gradually became darker as time passed. The macules on some of them grew hair. This case of BN with apparent hypertrichosis on one side of the cheek, which made it challenging to make a differential diagnosis with whiskers. The primary point of differentiation is that the lesions of BN only appear unilaterally. On the other hand, the face has whiskers on both sides. Additionally, BN will show hyperpigmentation whereas whiskers do not. In conclusion, for its unusual clinical presentation, we believe that reporting this case may help dermatologists avoid misdiagnosing similar cases.

An uncommon presentation of segmental Becker's nevus involving the T4 dermatome.

This case report explores a rare manifestation of Becker's nevus, where the patient exhibited an unusual dermatomal distribution featuring a hyperpigmented, irregular patch with associated hypertrichosis on the T4 segment. While Becker's nevus is a well-known dermatological condition typically observed in the upper back region, instances of dermatomal distribution are exceptionally uncommon. This case presents a unique occurrence of segmental Becker's nevus, highlighting the atypical presentation of this condition.

Follicular Becker's Nevus: A Case Report of an Uncommon Clinical Variant.

Pigmented hairy epidermal nevus, also known as Becker's nevus, has a typical description as a unilateral, hairy in appearance, light to dark brown patch with an irregular but clearly defined border. However, the exact aetiopathogenesis is still poorly comprehended. We report the case of a 19-year-old female who presented with asymptomatic brownish-pigmented macular lesions on the right breast that had slowly increased in size over the past three years. Upon cutaneous inspection, the right breast had 3-5 mm rounded and oval perifollicular macules that ranged from light to dark brown hue without increased hair growth. The macules were discrete and in no particular pattern. Dermoscopy of the lesions showed well-defined perifollicular hypopigmentation surrounded by a pigmented network-like pattern. Histopathology of a punch biopsy taken from one of the follicular lesions demonstrated an increase in basal layer pigmentation with elongation of rete ridges and acanthosis, consistent with Becker's nevus. The patient underwent three sittings of diode laser therapy, once in four weeks, with slight improvement in pigmentation.

Síndrome de nevo de Becker con características ictiosiformes / Becker's nevus syndrome with ichthyosiformes features

El nevo de Becker, es un hamartoma cutáneo benigno de etiología desconocida, que se presenta como una mácula hiperpigmentada de bordes geográficos. Por lo general, se ubica en la región torácica superior y su compromiso tiende a ser unilateral. Ocasionalmente el nevo de Becker se asocia a anomalías en el tejido óseo, muscular o cutáneo, siendo la ictiosis una característica muy infrecuente. La presencia de alguna de estas anomalías asociadas a un Nevo de Becker determina el síndrome del Nevo de Becker. Paciente de sexo masculino de 18 años, que consultó por un cuadro iniciado en la infancia, caracterizado por la aparición de manchas cafés, escamosas, pruriginosas que inicialmente se ubicaron en las extremidades inferiores y con el tiempo fueron apareciendo en tronco, región lumbar y glútea. Mediante la correlación clínico-patológica se llegó al diagnóstico de Nevo de Becker, con características ictiosiformes. Se realizaron estudios complementarios con ecocardiograma Doppler y radiografía de tórax, que resultaron normales y una ecotomografía Doppler color de tórax anterior que mostró una leve ginecomastia bilateral con discreto aumento del botón mamario derecho y una leve hipoplasia del pectoral mayor derecho diagnosticándose Síndrome de Nevo de Becker. La mayoría de los reportes de Síndrome de nevo de Becker describen anomalías como escoliosis o hipoplasia unilateral de la mama, con escasos reportes sobre ictiosis. Se reporta este caso por su presentación atípica con múltiples nevos de Becker, compromiso de hemicuerpo inferior y su asociación ictiosiforme poco descrita en la literatura.

Becker's nevus is a benign cutaneous hamartoma of unknown etiology; it appears as a hyperpigmented macula with geographical borders. Usually it is located in the upper thoracic region, unilaterally. Occasionally Becker nevus is associated with abnormalities in the bony, muscle or skin tissue, being ichthyosis an unusual feature. The presence of some of these anomalies associated with Becker´s nevus determine the Becker´s nevus syndrome. Male patient of 18 years old who had a clinical history that begun in childhood, characterized by the appearance of brown, scaly, itchy patch that initially were located in the lower extremities and eventually were appearing in the trunk, lumbar and gluteal area. The clinical-pathological correlation led us to the diagnosis of Becker´s nevus with ichthyosiform features. Additional studies were performed such as Doppler echocardiography and chest radiograph, both normal. Color Doppler ultrasonography of anterior chest showed a slight bilateral gynecomastia with discrete increase of the right breast and a slight hypoplasia of the right major pectoral, determining a Becker´s nevus syndrome. Most reports of Becker´s nevus syndrome described abnormalities such as scoliosis or unilateral breast hypoplasia, few cases have been reported with ichthyosis. This case is reported for its atypical presentation with multiple Becker´s nevus, compromise of the lower body and its ichthyosiform association, rarely described in the literature.