tumours of ear
TRANSCRIPT
Tumours of
EarBRIG ANWAR UL HAQ00923018513303
Tumours of
Ear
Parts of Ear• External Ear• Middle Ear• Inner Ear
Parts of External Ear• Pinna• External auditory Canal– Cartilagenous– Bony
Tumours of Pinna• Carcinoma
– 85% Pinna– 5% External auditory Canal
Tumours of Pinna• Benign Tumours• Malignant Tumours
Benign Tumours of Pinna
Benign• Sebaceous Cyst• Preauricular Cyst or Sinus• Dermoid Cyst• Keloid• Haemangioma• Papilloma• Cutaneous Horn• Keratoacanthoma• Neurofibroma
Preauricular Sinus or Cyst• Results From Faulty Union of
– Hillocks of the 1 St and 2nd Branchial arches During the Development of Pinna
Dermoid Cyst• Usually Presents as a Rounded Mass Over the Upper Part of
Mastoid Behind the Pinna.
Keloid• Piercing of the Ear Lobule For ornaments Surgical Incision• Genetic Susceptibility• Black Races are More often affected• Keloid - Pedunculated Tumour
Haemangiomas• They are Congenital Tumours often Seen In Childhood• Capillary Haemangioma. • Mass of Capillary-sized Blood Vessels • Present as a "Port-wine Stain"• Does not Regress Spontaneously
Haemangiomas• Cavernous Haemangioma • (Strawberry Tumour)• Endothelial-lined Spaces Filled With Blood• Increases Rapidly During the First Year• Regresses thereafter • May Completely Disappear By the Fifth Year.
Papilloma (Wart)• Tufted Growth of Flat Grey Plaque • Rough to Feel• Viral In origin.• Treatment is Surgical Excision• Curettage With Cauterization
Cutaneous Horn• Heaping Up of Keratin• Presents as Horn -Shaped Tumour• it is often Seen at the Rim of Helix In
Elderly• Treatment is Surgical Excision
Keratoacanthoma• Benign Tumour• Resembles a Malignant One. • Raised Nodule with a Central Crater• Initially, it Grows Rapidly But • Slowly Regresses Leaving a Scar • Treatment is Excision Biopsy
Malignant Tumours• Squamous Cell Carcinoma• Basal Cell Carcinoma• Adenocarcinoma• Malignant Cercinoma• Melanoma
Malignant Tumours Pinna• Squamous Cell Carcinoma• Basal Cell Carcinoma• Adenocarcinoma• Malignant Carcinoma• Melanoma
Squamous Cell Carcinoma• Painless Nodule• Ulcer With Raised Everted Edges and Indurated Base. • Metastases to Regional Lymph Nodes Occur Very Late. • Common In Male +50years• Prolonged Exposure to Direct Sunlight.• Fair-complexioned People are More Prone.• Treatment. Small Lesions With No Nodal Metas Tases are• Excised Locally With 1 Cm of Healthy area around it.• Larger Lesions of the Pinna or Those Coming Within 1 Cm• of External auditory Canal and Lesions With Nodal Metastases, • May Require total amputation of the Pinna, often• With en Bloc Removal of Parotid Gland and Cervical Lymph• Nodes.
Treatment-SCC• Small Lesions With No Nodal Metastases are Excised Locally
with 1 Cm of Healthy Area Around it.• Larger Lesions of the Pinna or those Coming Within 1 Cm of
External auditory Canal and Lesions With Nodal Metastases, May Require total amputation of the Pinna often
• Bigger Tumours Removal of Parotid Gland and Cervical Lymph Nodes.
Basal Cell Carcinoma• Common Sites - Helix and the Tragus• >50 Years• Nodule With Central Crust,• Removal of Crest its - Bleeding. • Ulcer Has a Raised Beaded Edge• Extends circumferentially• May Confined to the Skin But • May Penetrate Deeper, Involving Cartilage or Bone • Lymph Node Metastases Usually Do Not Occur
Treatment - BCC• Radiotherapy• Superficial Lesions, Not Involving Cartilage• Cosmetic Deformity avoided• Surgical Excision• Lesions Involving Cartilage
External Ear Canal Benign• Osteoma• Exostosis• Ceruminoma• Sebaceous adenoma• PapillomaMalignant• Squamous Cell Carcinoma• Basal Cell Carcinoma• adenocarcinoma• Malignant Carcinoma• Melanoma
Osteoma• Arises From Cancellous Bone• Single, Smooth, Bony, Hard, Pedunculated Tumour• Often Arising From the Posterior Wall of the Osseous
Meatus• Treatment is Surgical Removal By– Fracturing Through its Pedicle – Removal With a Drill.
Exostosis• Smooth, Sessile, Bony Swellings In the Deeper Part of the Meatus• Multiple and Bilateral• Arise From Compact Bone • Exostosis - Exposed to Entry of Cold Water
– Divers – Swimmers
• Males are affected Three Times More
Exotosis - Treatment• No Treatment
– Small and asymptomatic• Larger Ones
– Impair Hearing– Retention of Debris
• Surgical Treatment• High Speed Drill to Restore Normal Sized Meatus• Use of Gouge and Hammer Should Be avoided
Sebaceous adenoma• Arises From Sebaceous Glands • Smooth, Skin Covered, Swelling In the
Outer Meatus. • Treatment • Surgical Excision.
Ceruminoma• Tumour of Modified Sweat Glands (Cerumenous)• Smooth, Firm, Skin-covered Polypoid Swelling • Usually attached to the Posterior or Inferiornwall • Obstructs the Meatus Leading to Retention of Wax and
Debris. • Malignant : Benign = 2: 1• Treatment. • Wide Surgical Excision• Tendency to Recur • Regular Followed Up
Malignant Tumours - SCC• Long-standing Ear Discharge • arise Primarily From the Meatus • May Be a Secondary Extension From the Middle Ear Carcinoma.• Presenting Symptoms• Discharge
– Blood Stained– Mucopurulent – Purulent Discharge
• Severe Earache• Examination
– Ulcerated area In the Meatus– Bleeding Polypoid Mass – Granulations – Facial Nerve Paralysis – May Spread Into the Middle Ear – Regional Lymph Nodes (Preauricular, Postauricular, Infra-auricular and Upper
Deep Cervical)
Treatment - SCC• En bloc wide surgical excision• Postoperative radiation.
Basal cell and adenocarcinomas
• Rarely arise from the meatus• Clinical picture is similar - SCCDiagnosis biopsy Treatment
Wide surgical excision Postoperative radiation
Ceruminoma• Malignant type is twice as common
as benign.
Malignant melanoma• Rare tumour
Middle EarMiddle
Ear
Primary Tumours• Benign: Glomus Tumour• Malignant: Carcinoma, SarcomaSecondary Tumours• from Adjacent Areas
– Nasopharynx, – External Auditory Meatus – Parotid.
Metastatic from Carcinoma of• Bronchus• Breast• Kidney • Thyroid• Prostate• Gastrointesinal Tract.
Tumours of Middle Ear
• From Adjacent Areas– Nasopharynx, – External AUDItoRY Meatus – Parotid.
Metastaticfrom Carcinoma of Bronchus
• Breast, • Kidney, • Thyroid, • Prostate• Gastrointestinal SYSTEM.
Secondary Tumours
• Most Common Benign Neoplasm of Middle Ear and is So-named Because of its Origin from the Glomus Bodies.
• Resemble Carotid Body in Structure • Location– Dome of Jugular Bulb – Promontory
• Along the Course of Tympanic Branch of IXth Cranial Nerve(Jacobson's Nerve)
• Paraganglionic Cells Derived from the Neural Crest
Glomus Tumour
• Age 40-50• Females : Male = 5:1• Characteristics
– Benign– Non-encapsulated– Extremely Vascular
• Rate of Growth is Very Slow • Tumour is Locally Invasive.• Microscopically
– Masses Or Sheets of Epithelial Cells• Large Nuclei • Granular Cytoplasm.• Thin-walled Blood Sinusoids With• No Contractile Muscle Coat - Profuse Bleeding
Aetiology and Pathology
Glomus JugulareArise from the Dome ofjugular Bulbinvade the Hypotympanum and Jugular Foramen,Ixth to Xlith Cranial Nerve involvementCompress Jugular Veininvade its Lumen .
Glomus TympanicumArise from the Promonory of the Middle Ear Cause Aural SymptomsAural SymptomsFacial Paralysis.
Types of Glomus Tumours
• Initially Fill the Middle Ear• Later Perforate Through the Tympanic Membrane - Vascular Polyp.• May invade
– Labyrinth– Petrous Pyramid – Mastoid– Jugular Foramen– Base of Skull
• Causing Ixth to Xllth Cranial Nerve Palsies.• My Spread Through
– Eustachian Tube, It May Present in the Nasopharynx.– Intracranially to the Posterior and Middle Cranial Fossae.
• Metastatic Spread– Lungs and Bones is Rare - 4% – Metastatic Lymph Node Enlargement
Spread of Glomus Tumour
• I9% of Cases, - Symptoms Pertain to the Ear.• Umour is intra Tympanic - Earliest Symptoms
– Conductive Deafness – Pulsatile Tinnitus - Stops With Carotid Pressure
• Otoscopy – Red Reflex Through intact Tympanic Membrane - "Rising Sun– Bluish and May Be Buging.– "Pulsation Sign" (Brown's Sign) Ear Canal Pressure is Raised With Siegle's
Speculum, • Tumour Pulsates Vigorously and then Blanches; Reverse Happens With Release of
Pressure.
• Polyp - Profuse Bleeding• Dizziness Or Vertigo • Facial Paralysis• Earache - Less Common • Otorrhoea - infection and
– May Simulate Chronic Suppurative Otitis Media With Polyp.
Clinical Features
• IXth to XIIth Cranial• Dysphagia • Hoarseness• Unilateral Paralysis of
– Soft Palate– Pharynx– Vocal Cord – Weakness of the Trapezius and Sternomastoid Muscles.
• Mass Over the Mastoid or in the Nasopharynx.• Signs of intracranial involvement• Audible Systolic Bruit• Secrete Catecholamines and Produce Symptoms Like
– Headache, Sweating, Palpitation, Hypertension and Anxiety• 10% of the Tumours - Familial• 10% - Multicentric • 10% - Secrete Catecholamines
Cranial Nerve Palsies
• CT Scan• MRI• Angiography
Diagnosis
• Surgical Removal.• Radiation.• Embolisation.• Combination of the Above Techniques
Treatment
• Rare Condition • Age Group of 40-60• Slightly More Common in Females• 75% - Ear Discharge• Chronic Irritation - Causative Factor• Radical Mastoid Cavities• Primary Carcinoma of Mastoid Air Cells • Radium Dial Painters.
Carcinoma of Middle Ear and Mastoid
• Destroys – Ossicles– Facial Canal– internal Ear– Jugular Bulb, Carotid Canal – Deep Bony Meatus– Mastoid– Pctrous Apex. – Dura is Usually Resistant
• Other Structures– Parotid Gland– Temporomandibular Joint– infratemporal Fossa – Eustachian Tube– Nasopharynx
• Lymph Node Enlargement Occurs Late.
Spread of Tumour
• Like CSOM Discharge and Deafness• Females 40- 60 Suspicion– Chronic Foul-smelling Discharge– Blood-stained.
• Pain Severe and Comes At Night.• Facial Palsy• Friable, Haemorrhagic Granulations Or Polyp.• Deafness• Vertigo
Clinical Features
• Definitive Diagnosis is Made only on Biopsy.• Extent of Disease– Cranial Nerve Palsies– Radiological Examination.
• CT Scan and Angiography are Useful in the Assessment of Disease.
Diagnosis
• Surgery• Radiotherapy
Treatment
• Rhabdumyosarcoma • Osteosarcoma• Lymphoma• Fibrosarcoma• Chondrosarcoma• Distant Metastases– Lungs – Bone
Other Tumours
• Synonyms– Vestibular Schwannoma– Neurilemmoma – Eighth Nerve Tumour
Acoustic Neuroma
• 8O% - Cerebellopontine Angle Tumours• 10% - All the Brain Tumours.
incidence
• Benign• Encapsulated• Extremely Slow-growing• Microscopically– Elongated Spindle Cells – Rod-shaped Nuclei – Cell Lie Rows Or Palisades– Bilateral Tumours - With Neurofibromatosis.
Pathology
• Schawan Cells
Origin
• Depending on the Size• (A) intracanalicular (Confined to IAC)• (B) Small Size (Up to 1.5 Cm)• (C) Medium Size (1.5 to 4 Cm)• (D) Large Size (Over 4 Cm)
Classification
• 40-60 Years• Male:female = 1:1
Clinical Features
• Earliest Symptoms - Still intracanalicular – Pressure on Cochlear Or Vestibular Nerve
• Progressive Unilateral Sensorineural Hearing Loss, • Tinnitus• Speech Discrimination Is Poor– Out of Proportion to the Pure tone Hearing Loss.
• May Get Sudden Hearing Loss.• Imbalance Or Unsteadiness. • True Vertigo is Seldom Seen
Cochleovestibular Symptoms
• Vth Nerve Earliest Nerve - 2.5cm -CP Angle– Reduced Corneal Sensitivity– Numbness – Paraesthesia of Face
• VIIth Nerve. – Sensory Fibers Affected Early - Hypoaesthesia of Posterior Meatal Wall – Loss of Taste – Reduced Lacrimation on Schirmer's Test. – Motor Fibers Are More Resistant and Are Affected Late.
• IXth and Xth Nerves – Dysphagia – Hoarseness
• Other Cranial Nerves. • XIth and XIIth, Vllrd, IVth and VIth - Very Large.
Cranial Nerve involvement
• Ataxia• Weakness• Numbness of the Arms Legs• Exaggerated Tendon Reflexes
Brainstem involvement
• Pressure Symptoms on Cerebellum Are Seen in Large Tumours. This is Revealed By
• Finger-nose Test• Knee-heel Test• Dysdiadochokinesia• Ataxic• inability to Walk Along A Straight Line
Cerebellar involvement
• Late Features• Headache• Nausea• Vomiting• Diplopia - Vlth Nerve involvement • Papilloedema - Blurring of Vision
Raised intracranial Tension
• Pure tone Audiometry • Speech Audiometry - Poor Speech Discrimination• Reduction of Discrimination Score When Loudness is increased• Recruitment Phenomenon is Absent.• Short increment Sensitivity index (Sis!) Test Will Score of 0-
20% in 70-90% of Cases.• Threshold tone Decay - Retrocochlear Lesion• Stapedial Reflex Decay• Evoked Response Audiometry• MRI With Contrast
Audiological Tests
• Meniere's Disease) • Tumours of Cerebellopontine Angle• Acoustic • Meningioma• Epidermoid (Cholesteatoma)• Arachnoid Cyst• Schwannoma of Other Cranial Nerves• V, VII, IX, X, XI• Aneurysm• Glomus Tumour• Metastatic Tumours
Differential Diagnosis
• Surgery• Surgical Removal of the Tumour is the Treatment of
Choice.• Surgical Approach Will Depend Upon the Size of
Tumour.• The Various Approaches Are:• 1. Middle Cranial Fossa Approach.• 2. Translabyrinthine Approach .• 3. Suboccipital Approach.• 4. Combined Translabrynthine-Suboccipital Approach
Treatment
• Radiotherapy• Conventional Radiotherapy By External Beam
Has No Role in the Treatment of Acoustic Neuromas due to Low tolerance of the Central Nervous System to Radiation.
Treatment
• Gamma Knife Surgery• Stereo-tactic Radiotherapy • Radiation Energy is Converged on the Tumour• Minimum Effects on the Surrounding Tissue.• This Causes
– Arrest of the Growth of the Tumour – Reduction in its Size
• Indications– Refuse Surgery – Contra indications to Surgery – Residual Tumour
Treatment
THANKYOU