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CH-7-Other lesions : (TUMORS OF SOFT TISSUE (VASCULAR TUMORS (HEMAGIOMA: •…
CH-7-Other lesions :
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TUMORS OF SOFT TISSUE
LIPOMA: • Benign tumor of mature fat cells• Most occur > 40 yrs.• !!MOST Common on BUCCAL MUCOSA & VESTIBLE
• Yellowish mass• Delicate pattern of vessels on surface
does not recur
TUMORS OF NERVE TISSUE
NEUROFIBROMA & SCHWANNOMA: • Benign tumors derived from Schwann cells in nerve tissue • MOST COMMON intraoral location: TONGUE.-Neurofibroma (painless): schwann cells, perineural fibroblasts-schannoma: schwann cells (palisading)- can be painful
GRANULAR CELL TUMORS: • Benign tumor: large cells w/ granular cytoplasm -Nerve or Mesenchymal cells -Tongue > Buccal mucosa• Painless, non-ulcerated nodule
CONGENITAL EPULIS: -Benign - in Newborns -Resembles Granular cell tumor -• Sessile/pedunculated mass on the gingiva -Anterior max- common in baby girls!
TUMORS OF MUSCLE: • Very rare. Benign: Rhabdomyoma- refers to straited muscles - occurs on the tongue. Leiomyoma- refers to smooth muscle- associated to BV. Malignant:Rhabdomyosarcoma: straited muscle. Most common SOFT TISSUE MALIGNANCY in the H/N of CHILDREN. • Rapidly growing/destructive tumor
VASCULAR TUMORS
HEMAGIOMA: • Benign proliferation of capillaries.• Congenital: developmental -Uncontrolled growth in a child -Cavernous (large bv) vs capillary (small capillary) •in Adults: due to trauma• F>M •!!! Most common H/N site: Tongue
LYMPHANGIOMA: -Ill-defined mass Benign-Lymphatic vessel- rare -Congenital. Tongue -Pebbly surface--!!!! in Neck: CYSTIC HYGROMA-(NBQ)
• Tend to reoccur
MALIGNANT VASCULAR TUMORS: -Malignant-Angiosarcoma: May occur in the oral cavity (rare).-Kaposi sarcoma:Skin and oral mucosa. On skin- purplish. Slow growing. Seen in older men• More aggressive form associated w/ HIV /AIDS: • Lesions are often seen in the oral cavity• Purple macules, plaques, or exophytic tumors• Common sites: hard palate/gingiva• May occur in patients w/ other immunodeficiencies• Caused by HHV-8
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METATSTATIC TUMORS OF THE JAWS: Primary site is elsewhere. Usually: thyroid, lung, breast, prostate, and kidney. Most common: MANDIBLE.-PAIN! Bony EXPANSION-depends on loc. Lower mand- no expansion- but bone are eaten away. Cancer-Stage IV. Neurosensory deficit of lip: paraesthesia or anaesthesia (pt can’t feel their chin or jaw).Loosening of teeth