Irritation fibroma (polypoid fibrous hyperplasia): A well-circumscribed exophytic soft tissue enlargement on the right buccal mucosa.

Irritation fibroma (polypoid fibrous hyperplasia): A well-circumscribed exophytic soft tissue enlargement on the right buccal mucosa.

connective tissue.

Irritation fibroma (polypoid fibrous hyperplasia): A well-circumscribed exophytic soft tissue enlargement on the right buccal mucosa.

Irritation fibroma (polypoid fibrous hyperplasia): High power microscopic image showing dense connective tissue with collagen bundles and relatively few blood vessels and fibroblasts.

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Irritation fibroma (polypoid fibrous hyperplasia): A well-circumscribed dome-shaped soft tissue enlargement of the left buccal mucosa.

Irritation fibroma. Low-power photomicrograph showing a dome-shaped lesion with a surface of keratinized stratified squamous epithelium. Most of the lesion consists of dense irregular connective tissue. Hematoxylin and eosin stain.

Irritation fibroma (polypoid fibrous hyperplasia): Microscopic image showing dense connective tissue and a surface of keratinized stratified squamous epithelium.

Irritation fibroma (polypoid fibrous hyperplasia): Microscopic image showing dense connective tissue.