PMC2631493_01
Brownish-black macular lesion on left buccal mucosa adjacent to molar teeth with Class V glass ionomer cement restorations (arrows).
1752-1947-3-11-1.jpg
PMC2631493_01_1752-1947-3-11-1.jpg
F1
The patient had initially noted a small round area of pigmentation of about 5 mm in size which, to his concern, had rapidly increased to the present size (Figure 1).
Hematoxylin and eosin stained sections (A, B and C) revealed stratified squamous non-keratinized epithelium exhibiting acanthosis and numerous dendritic melanocytes throughout the entire thickness of the epithelium; Masson-Fontana (M-F) special stain reveals numerous melanocytes.
1752-1947-3-11-2.jpg
PMC2631493_01_1752-1947-3-11-2.jpg
F2
The dendritic melanocytes were also demonstrated by Masson-Fontana silver impregnation stain (Figure 2).
Follow-up of lesion after 1 week (A), after 2 weeks (B) and complete resolution after 2 months (C).
1752-1947-3-11-3.jpg
PMC2631493_01_1752-1947-3-11-3.jpg
F3
A regular follow-up of the patient was carried out to observe the progress of the lesion (Figure 3).