Ota nevus
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ReferencesOta Nevus är en godartad mörkfärgning av huden, främst runt trigeminusnerven, och påverkar främst de delar av ögat som betjänas av dess första och andra gren. Detta tillstånd, även kallat okulär dermal melanos, orsakar en gråblå missfärgning på grund av fångade melanocyter. Det uppträder vanligtvis på ena sidan av ansiktet och kan involvera ögat, ansiktshuden och ibland gommen. Personer med detta tillstånd har en högre risk att utveckla ögonmelanom och glaukom. Nevus of Ito är liknande men påverkar andra nervområden.
Nevus of Ota is a benign melanosis that primarily involves the region of the trigeminal nerve distribution. The first and second divisions of the trigeminal nerve, namely the ophthalmic V1 and the maxillary V2 are most commonly involved. There is associated hyperpigmentation of the eye. Nevus of Ota is also known as ocular dermal melanosis. The characteristic gray-blue hyperpigmentation occurs due to entrapped melanocytes. Unilateral presentation is more common. The melanocytes are entrapped leading to gray-blue hyperpigmentation of the conjunctiva and sclera along with ipsilateral facial skin. There is an increased risk of uveal melanoma and glaucoma in these cases. Palatal involvement may also occur. Nevus of Ito is very similar to nevus of Ota except it differs in the territory of distribution. It was described by Minor Ota in 1954. It involves the distribution territory of lateral cutaneous brachial nerves of the shoulder and posterior supraclavicular nerves. Both of these diseases share similar pathophysiology.
Nevus of Ota is a benign melanosis that primarily involves the region of the trigeminal nerve distribution. The first and second divisions of the trigeminal nerve, namely the ophthalmic V1 and the maxillary V2 are most commonly involved. There is associated hyperpigmentation of the eye. Nevus of Ota is also known as ocular dermal melanosis. The characteristic gray-blue hyperpigmentation occurs due to entrapped melanocytes. Unilateral presentation is more common. The melanocytes are entrapped leading to gray-blue hyperpigmentation of the conjunctiva and sclera along with ipsilateral facial skin. There is an increased risk of uveal melanoma and glaucoma in these cases. Palatal involvement may also occur. Nevus of Ito is very similar to nevus of Ota except it differs in the territory of distribution. It was described by Minor Ota in 1954. It involves the distribution territory of lateral cutaneous brachial nerves of the shoulder and posterior supraclavicular nerves. Both of these diseases share similar pathophysiology.
Congenital dermal melanocytosis, även kallad mongolisk fläck, är en vanlig typ av födelsemärke som ses hos nyfödda. Den visar sig som gråblå fläckar på huden redan vid födseln eller kort därefter. Dessa märken finns vanligtvis på nedre delen av ryggen och på skinkorna, och axlarna är en annan vanlig plats. De är vanligare hos asiatiska och svarta spädbarn och drabbar både pojkar och flickor i lika stor utsträckning. Vanligtvis försvinner de av sig själva mellan 1 och 6 års ålder och kräver i regel ingen behandling eftersom de för det mesta är ofarliga.
Congenital dermal melanocytosis, also known as Mongolian spot or slate gray nevus, is one of many frequently encountered newborn pigmented lesions. It is a type of dermal melanocytosis, which presents as gray-blue areas of discoloration from birth or shortly thereafter. Congenital dermal melanocytosis is most commonly located in the lumbar and sacral-gluteal region, followed by shoulders in frequency. They most commonly occur in Asian and Black patients, affect both genders equally, and commonly fade by age 1 to 6 years old. Congenital dermal melanocytoses are usually benign and do not require treatment.
Congenital dermal melanocytosis, also known as Mongolian spot or slate gray nevus, is one of many frequently encountered newborn pigmented lesions. It is a type of dermal melanocytosis, which presents as gray-blue areas of discoloration from birth or shortly thereafter. Congenital dermal melanocytosis is most commonly located in the lumbar and sacral-gluteal region, followed by shoulders in frequency. They most commonly occur in Asian and Black patients, affect both genders equally, and commonly fade by age 1 to 6 years old. Congenital dermal melanocytoses are usually benign and do not require treatment.
Användning av en Q‑switchad 1064 nm‑laser har rapporterats vara framgångsrik vid behandling av nevus Ota.
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