This document discusses tumors of the nose and paranasal sinuses. It begins by classifying inverted papilloma, a benign neoplasm originating from the Schneiderian membrane. Inverted papilloma commonly presents in males aged 40-70 as a unilateral polypoidal mass in the lateral nasal wall. It has a tendency to recur after surgery and is associated with squamous cell carcinoma in 10-15% of cases. The document then discusses clinical features, imaging findings, and treatment options for various tumors including hemangioma, osteoma, fibrous dysplasia, and malignant tumors like squamous cell carcinoma and adenocarcinoma. Risk factors, routes of spread, and clinical manifestations are described for malignant tumors
Salivary gland tumours are a relatively rare and morphologically diverse group of lesions. So here are slides containing information about salivary gland tumours with images.
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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3. INVERTED PAPILLOMA
Benign neoplasm
Schneiderian membrane-neuro-ectodermal origin
Conrad Victor Schneider
Accounts for 5% of all benign tumors
Schneiderian papilloma
Ringertz tumor
Transitional cell papilloma
4. Inverted papilloma
microscopically the neoplastic epithelium is seen to grow towards
underlying stroma.
HPV 6,11
b/w 40-70 yrs
Male preponderance
Lateral nasal wall-mc site of origin
Always unilateral
5. Inverted papilloma
Greyish white /pale pink fleshy firm to rubbery
multiple polypoidal mass arising from lateral nasal
wall.
Tendency to recur after sx removal
Associated with squamous cell carcinoma in 10-15% cases
6. CLINICAL FEATURES
U/L NASAL OBSTRUCTION
BLEEDING FROM THE NOSE
U/L NASAL MASS RESEMBLING A POLYP
KROUSE STAGING
7. CT SCAN
Bone erosion, thinning,
remodelling, sclerosis.
hyperdense areas with linear
calcification
11. Hemangioma
Capillary haemangioma
Bleeding polypus of the septum
soft, dark red , pedunculated or sessile mass arising from anterior
aspect of septum.
Epistaxis
Excision
Cavernous hemangioma-tubinates/lat nasal wall
12. osteoma Fibrous dysplasia
Mc in frontal sinus
Usually assymptomatic
Can obstruct ostium of frontal
sinus and cause mucocele
If symptomatic -excision
Bone replaced by fibrous tissue
Maxillary sinus –MC site
Proptosis,nasal obstrn,facial
disfigurement
Surgical excision
15. EPIDEMIOLOGY
Incidence - 0.5–1 / 1,00,000 / yr
< 1 % of all carcinomas.
Male : female = 2: 1
Whites > blacks
Mean age – 55 yrs ( 5th -6th decade )
Most common – maxillary sinus (55 % )
16. Malignancy of PNS
Maxillary sinus most commonly involved
Followed by ethmoid and frontal sinus
Squamous cell carcinoma –most common histological type
Adenocarcinoma –common in wood workers
22. Orbital symptoms
Due to superior spread
Seen 25% of patients
Lid swelling,epiphora
Diplopia , proptosis, impaired vision
23. Facial symptoms
Seen in 40-70% patients
Due to extension through anterior wall
Numbness/paraesthesia of face-infra orbital nerve
Blunting of nasomaxillary fold
Widening of dorsum of nose
Ulcerative growth/fixity to skin
24. Neurological
Spread of disease through
cribriform plate….ant cranial fossa(head ache,anosmia,csf leak)
Posterior wall …pterygopalatine fossa(deep facial pain,trismus)
Orbital apex-----middle cranial fossa-EOM palsy(direct/cavernous sinus)