PMC5426149_01
(a and b) Growth attached to incisive papilla between deciduous maxillary central incisors. (c) Tissue received after excisional biopsy
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F1
This growth was present as a small nodule at birth which progressively increased in size extending to 2-2.5 cm below the incisal edge of maxillary central incisors [Figure 1].
(a) H and E stained section showing parakeratinized stratified squamous epithelium with irregular and interlacing bundles of collagen fibers along with numerous muscle fiber bundles in connective tissue stroma. (b) Reticulin-stained section showing immature collagen fibers. (c) Masson's trichrome-stained section showing collagen fibers (blue) and smooth muscles (red)
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PMC5426149_01_CCD-8-148-g002.jpg
F2
Plump- and spindle-shaped fibroblasts along with proliferating nerve bundles and endothelial cell-lined blood vessels underneath the epithelial surface with extravasated red blood corpuscles [Figure 2].