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A Melanoma Patient-Derived Xenograft Model

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Multifocal diffuse oral melanoacanthoma: a case report.

Luciana S Marocchio¹, Décio S P Júnior, Suzana C O M de Sousa

¹Department of Oral Pathology, School of Dentistry, University of São Paulo, Brazil. lumarocchio@usp.br

Journal of Oral Science

|September 25, 2009

Summary

This summary is machine-generated.

Oral melanoacanthoma (OMA) is a rare benign lesion. This case report details diffuse OMA in a 74-year-old woman, emphasizing clinical and histological diagnosis.

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Area of Science:

Oral pathology
Dermatology
Histopathology

Background:

Oral melanoacanthoma (OMA) is a rare, benign oral lesion.
Characterized by acanthotic epithelium with dendritic melanocytes.
Pathogenesis is uncertain, but non-neoplastic behavior is suggested by clinical presentation and spontaneous remission.

Observation:

OMA can present as solitary or multifocal lesions with distinct features.
Clinical appearance is not pathognomonic, necessitating biopsy for diagnosis.
This report describes a rare case of diffuse OMA affecting the tongue in a 74-year-old Black woman.

Findings:

Diagnosis was based on clinical and histological features.
The immunohistochemical profile of the lesion is presented.
The case highlights diffuse OMA presentation.

Implications:

OMA typically requires no treatment or only periodic observation.
Accurate diagnosis is crucial to differentiate from potentially malignant lesions.
Understanding OMA variants aids in appropriate patient management.