PHOTO ESSAY
Year : 2015 | Volume
: 63 | Issue : 6 | Page : 532--533
Giant nevus of Ota
Pukhraj Rishi, Ekta Rishi, Deepak Bhojwani Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
Correspondence Address:
Dr. Pukhraj Rishi Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, 18 College Road, Chennai - 600 006, Tamil Nadu India
How to cite this article:
Rishi P, Rishi E, Bhojwani D. Giant nevus of Ota.Indian J Ophthalmol 2015;63:532-533
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How to cite this URL:
Rishi P, Rishi E, Bhojwani D. Giant nevus of Ota. Indian J Ophthalmol [serial online] 2015 [cited 2024 Mar 29 ];63:532-533
Available from: https://journals.lww.com/ijo/pages/default.aspx/text.asp?2015/63/6/532/162607 |
Full Text
Nevus of Ota is a hamartoma of dermal melanocytes presenting as blue hyperpigmented patches on the face usually within the distribution of ophthalmic and maxillary branches of the trigeminal nerve. [1] A case of giant nevus of Ota involving all three branches of the trigeminal nerve is presented.
Case Report
An 18-year-old girl presented with skin hyperpigmentation over the left side of the face since childhood. External examination revealed bluish hyperpigmented patch involving the forehead, periorbital area, temple, cheek and mandibular area [Figure 1]. Examination of the left eye showed conjunctival melanocytosis, anterior and intercalary staphyloma, leucomatous corneal opacity and pseudoproptosis [Figure 2]. The right eye was essentially normal. Visual acuity was nil perception of light in the left eye and 20/20 in the right eye. Left eye ultrasound ruled out intraocular mass and showed optic nerve head cupping; the axial length was 31 mm [Figure 3]. Magnetic resonance imaging of brain done elsewhere (images not available) was reported normal. She underwent enucleation of the left eye. Histopathological examination of enucleated eye revealed melanocytic proliferation in the conjunctiva, iris, cilary body, choroid and sclera [Figure 4].{Figure 1}{Figure 2}{Figure 3}{Figure 4}
Discussion
Nevus of Ota usually appears at birth and has a female preponderance (4.8:1). [2] It may be associated with nevus of Ito, ocular melanoma (1 in 400) and glaucoma (10.3%). [3] Hence, the need for detailed ophthalmic and systemic examination. Histologically it is classified into five types, which are superficial, superficial dominant, diffuse, deep dominant, and deep. The more superficial lesions tend to be located on the cheeks while deeper lesions occur on periorbital areas, temple, and forehead. This classification bears significance in making a therapeutic prognosis of the disease. [4] A lifelong follow-up with dermatologist and ophthalmologist is required given the increased incidence of malignant melanoma. [5]
Acknowledgment
Dr. Jyotirmay Biswas for his help with histopathological slides.
References
1 | Watanabe S, Takahashi H. Treatment of nevus of Ota with the Q-switched ruby laser. N Engl J Med 1994;331:1745-50. |
2 | Aurangabadkar S. QYAG5 Q-switched Nd: YAG laser treatment of nevus of Ota: An Indian Study of 50 Patients. J Cutan Aesthet Surg 2008;1:80-4. |
3 | Teekhasaenee C, Ritch R, Rutnin U, Leelawongs N Glaucoma in oculodermal melanocytosis. Ophthalmology 1990;97:562-70. |
4 | Hirayama T, Suzuki T. A new classification of Ota′s nevus based on histopathological features. Dermatologica 1991;183:169-72. |
5 | Radhadevi CV, Charles KS, Lathika VK. Orbital malignant melanoma associated with nevus of Ota. Indian J Ophthalmol 2013;61:306-9. |
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