Oral Pathology Chapter 12 Soft Tissue Tumors

Where is the most common location for fibroma?

Buccal mucosa

What is a specific type of fibrous hyperplasia occuring on maxillary labial frenum. Appears as small, finger-like projection

Frenal Tag

Should you biopsy fibroma?

Yes you should still biopsy fibroma because malignant tumor may mimic clinical appearance of fibroma

Which is caused by chronic irritation: Fibroma or Giant Cell Fibroma

Fibroma

Retrucuspid Papilla

Microscopically identical to giant cell fibroma

Lingual to mandibular cuspid

Epulis Fissuratum vs Inflammatory Papillary Hyperplasia

Epulis Fissuratum: Folds

Inflammatory Papillary Hyperplasia: Cobblestone appearance

Both from ill fitting dentures

Fibromatosis is common in young people and associated with _______ syndrome

Locally aggressive but not malignant

Gardner

Myofibroma

Both smooth muscle and fibroblast

Benign

Treated by excision

Treatment of pyogenic granuloma

Surgical excision

If pregnant wait after but can resolve on own once hormone level return to normal

What are the 3Ps and how to tell between them?

Pyogenic Granuloma, Peripheral Giant Cell Granuloma, Peripheral Ossifying Fibroma

Biopsy but Purple Blue Hue is usually PGCG

Where is lipoma most common?

Buccal mucosa

Schwannoma vs Neurofibromatosis vs Neurofibroma

Schwannoma: NF2

Neurofibromatosis: NF1, multiple neurofibroma

Just one tumor with mix of schwann cells

Von Recklinghausen Disease

NF1 Neurofibromatosis

Also note cafe au lait coast of california (smooth)

Crow sign (freckling of armpit)

Lisch nodules (pigmented spot on iris of eye)

Can become malignant (neurofibrosarcoma)

Thickened lip is in what oral neuromas?

MEN 2B

Also have oral neuroma (papules on lips and tongues)

Also can have medullary thyroid carcinoma and pheochromocytoma

Granular Cell Tumor is derived from _______ cells

Most common on _______ of _______

Schwann

Dorsal of Tongue

What is the treatment for infantile hemangioma

Beta blocker (Propanolol)

Leiomyoma

Common smooth muscle tumor in uterus and GI, sometimes in oral

Rhabdomyoma

Benign neoplasm of skeletal muscles

Fibrosarcoma

Undifferentiated Pleomorphic Sarcoma

Liposarcoma

Malignant Peripher Nerve Tumor (MPNST)

Olfactory Neuroblastoma

Angiosarcoma

Kaposi Sarcoma

Leiomyosarcoma

Rhabdomyosarcoma

Fibrosarcoma: Malignancy of fibroblast

Undifferentiated Pleomorphic Sarcoma: Can’t be categorized

Liposarcoma: Malignancy of Fat

Malignant Peripher Nerve Tumor (MPNST): Malignant from nerve most from NF1

Olfactory Neuroblastoma: Neuroectodermal from upper nasal vault

Angiosarcoma: Malignancy from blood vessel

Kaposi Sarcoma: HHV-8

Leiomyosarcoma: Malignancy of smooth muscle

Rhabdomyosarcoma: Malignancy of Skeletal muscle

Where do metastases to oral soft tissues come from

Lung