Ota nevus - Ota Névus
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ReferencesNevus of Ota je nezhubné stmavnutie kože, najčastejšie v oblasti trojklaného nervu, najmä v oblastiach oka, ktoré sú zásobované prvým a druhým vetvom tohto nervu. Tento stav, tiež nazývaný očná dermálna melanóza, spôsobuje šedo‑modré zafarbenie v dôsledku zachytených melanocytov. Zvyčajne sa objavuje na jednej strane tváre a môže zahŕňať oko, pokožku tváre a niekedy aj periorálnu oblasť. Ľudia s týmto stavom majú zvýšené riziko rozvoja očného melanómu a glaukómu. Nevus of Ito je podobný, ale postihuje iné nervové oblasti.
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 je tiež známy ako mongolská škvrna. Ide o bežný typ materského znamienka, ktoré sa vyskytuje u novorodencov. Vyskytuje sa ako sivomodré škvrny na koži už od narodenia alebo čoskoro po ňom. Tieto znaky sa zvyčajne nachádzajú na spodnej časti chrbta a zadku, pričom ramená sú ďalším bežným miestom. Vyskytujú sa častejšie u ázijských a čiernych dojčiat a postihujú rovnako chlapcov aj dievčatá. Zvyčajne samy vymiznú vo veku 1 až 6 rokov a vo všeobecnosti nepotrebujú žiadnu liečbu, pretože sú väčšinou neškodné.
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.
Použitie Q‑spínaného 1064 nm lasera bolo hlásené ako úspešné pri liečbe Ota Névus (Ota nevus).
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