Report of rare palatal expression of Nevus of Ota with amendment of Tanino′s classification

Guledgud, Mahima V; Patil, Karthikeya; Srivathsa, Srikanth Hanasoge; Malleshi, Suchetha N

doi:10.4103/0970-9290.94684

Cited by 6 publications

(6 citation statements)

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“…Until now, many studies concerning NO were performed and discussed using Tanino's classificaition289. However, several studies have demonstrated that Tanino's classification leaves a considerable portion of patients unexplained1011. Variants unclassified by conventional classification have been reported and therefore have revealed the weaknesses of the original version of Tanino's classifications.…”

Section: Introductionmentioning

confidence: 99%

Treatment and Classification of Nevus of Ota: A Seven-Year Review of a Single Institution's Experience

et al. 2017

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BackgroundNevus of Ota (NO) is a relatively common pigmentary disorder in Asians. Tanino's classification is an old but tacit consensus to delineate the disease. Various treatment options have been presented. However, a few studies have been conducted on available laser options and current treatment strategies or the classification of NO.ObjectiveTo investigate current laser options and their effectiveness for the treatment of NO, contributing factors to clinical outcomes, and verification of classification.MethodsA retrospective study of NO was conducted by reviewing medical charts and photographs of sixty-seven patients. Statistical analysis was used to compare excellent and poor outcomes and determine contributing factors.ResultsThe median age of onset was below the age of 1 (interquartile range [IQR], 0~1). Tanino's and PUMCH classification systems failed to classify patients in 24 (35.8%) and 6 (9.0%) of patients, respectively. A 1,064 nm Q-switched Nd:YAG laser without additional lasers was used most frequently in 42 patients (62.7%). The frequency of treatment was 19.0 (IQR, 10.0~23.0) in the cured group defined as subjects showing 95% improvement or above, compared to 10.0 (IQR, 6.25~13.75) in the unattained group defined as subjects showing less than 95% improvement (p=0.001).ConclusionA 1,064 nm Q-switched Nd:YAG laser is a reliable treatment armamentarium, functioning as a single infallible modality as well as a combination treatment modality for NO. Repetitive laser treatments without interruption seems to be the most suitable in clearing NO. The current classification systems of NO are defective. Thus, a new classification should be developed.

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Section: Introductionmentioning

confidence: 99%

Treatment and Classification of Nevus of Ota: A Seven-Year Review of a Single Institution's Experience

et al. 2017

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“…8 According to studies, primary orbital melanoma is usually well-circumscribed, this is aligned with findings in our case as demonstrated in the CT Scan. 8,9,10 Malignant melanoma can be accurately diagnosed by ophthalmoscopy, fluorescein angiography, ultrasonography, CT Scan, and MRI. 1,4 Our patient was presented with protrusion and ocular displacement towards superior region of the left eye.…”

Section: Discussionmentioning

confidence: 99%

“…Primary orbital melanoma is usually wellcircumscribed, as demonstrated in the CT Scan. 8,9,10 The management of Nevus of Ota ranges from camouflage, cryotherapy, microsurgery, and laser surgery which is the treatment of choice. 1,2 Orbital exenteration aims to control local tumor and to prevent distant organ metastasis (such as liver, bone, lymph nodes, and brain).…”

Section: Discussionmentioning

confidence: 99%

Extensive Primary Orbital Malignant Melanoma Associated with Nevus of Ota

Mutmainah¹,

Anggraini²,

Kodrat³

2021

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Primary orbital malignant melanoma is an extremely rare condition to present alone without previous extension of choroidal or conjunctival involvement. We reported the first case of malignant orbital melanoma without ocular involvement in a patient with nevus of Ota. A 52-year-old man presented with left proptosis and extensive bluish black pigmentation on left side of the face classified as Tanino type II of nevus of Ota and left ocular melanocytosis from birth. CT scan imaging showed extensive orbital mass occupying most of the orbital space. Transconjunctival biopsy was performed and a very pigmented mass was discovered, confirming the histopathology result of malignant melanoma. The patient was given up to five cycles of chemotherapy regimen. On serial orbital CT Scan, 33% of the tumor mass has disappeared after completing three cycles.

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“…Appearance of palatal pigmentation usually blends with oral mucosa and is typically irregular, ill-defined, and often mottled patch. [10]…”

Section: Discussionmentioning

confidence: 99%

Acquired bilateral nevus of ota-like macules with Mucosal involvement: A new variant of Hori′s nevus

et al. 2014

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Acquired bilateral nevus of Ota-like macules (ABNOM) or Hori's nevus, a rare form of acquired dermal melanocytoses, presents as bilateral facial blue-gray macules without ocular or mucosal involvement. This condition is mostly found in women of Asian descent and usually appears in the fourth or fifth decade of life. Pathogenesis is unknown, though few theories have been proposed. Effective treatment has been found to be achieved with pigment-specific lasers. Herein, we report a case of Hori's nevus with mucosal involvement. A 42-year-old male patient, presented to us with blue-gray discoloration on either side of his face, both eyes, and in the mouth since the age of one year. Histopathological examination showed clusters and singly dispersed pigmented melanocytes within the upper and mid-dermis regions. Special staining of melanocytes using Masson-Fontana stain was positive. Diagnosis of Hori's nevus was made by correlating clinical and histopathological findings. Patient was informed of his treatment options, but refused treatment. A similar case of Hori's nevus with mucosal involvement has not been reported so far.

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Report of rare palatal expression of Nevus of Ota with amendment of Tanino′s classification

Cited by 6 publications

References 0 publications

Treatment and Classification of Nevus of Ota: A Seven-Year Review of a Single Institution's Experience

Treatment and Classification of Nevus of Ota: A Seven-Year Review of a Single Institution's Experience

Extensive Primary Orbital Malignant Melanoma Associated with Nevus of Ota

Acquired bilateral nevus of ota-like macules with Mucosal involvement: A new variant of Hori′s nevus

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