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DR.SUDEEP K.C. TUMOURS OF MIDDLE EAR AND MASTOID. CLASSIFICATION. 1)Primary Tumours: Benign  Glomus tumour Malignant Carcinoma ,sarcoma 2)Secondary Tumours: a) From adjacent areas like nasopharynx , external meatus and parotid.

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TUMOURS OF MIDDLE EAR AND MASTOID

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Dr sudeep k c

DR.SUDEEP K.C.

TUMOURS OF MIDDLE EAR AND MASTOID


Classification

CLASSIFICATION

1)Primary Tumours:

Benign Glomus tumour

Malignant Carcinoma ,sarcoma

2)Secondary Tumours:

a) From adjacent areas like nasopharynx , external meatus and parotid.

b)Metastatic eg. From ca of bronchus, breast, thyroid, prostrate, GIT.


Glomus tumour

GLOMUS TUMOUR:

  • Most common benign neoplasm of middle ear and originate from the glomus bodies . It is found in the jugular bulb or on the promontory along course of tympanic branch of IXth cranial nerve(jacobson’s nerve).

  • The tumour consists of paraganglionic cells derived from the neural crest.


Aetiology and pathology

AETIOLOGY AND PATHOLOGY

  • Often seen in middle age.(40-50).

  • Females>Males.

  • It is a benign non encapsulated but extremely vascular ,slow growing and locally invasive tumours.

  • Microscopically it shows sheets of epithelial cells with large nuclei and granular cytoplasm with thin walled blood sinusoids without contractile muscle coat.


Tumours of middle ear and mastoid

Two types of glomustumours:

1)Glomusjugulare: They arise from dome of jugular bulb, invade hypotympanum and jugular foramen , causing neurological sign of IX th to XII th cranial nerve involvement . They may compress or invade lumen of jugular vein.

2)GlomusTympanicum: They arise from promontory of middle ear and cause aural symptoms sometimes with facial paralysis.


Clinical features

CLINICAL FEATURES:

  • A)When tumour is intratympanic:

    Earliest symptoms are deafness and tinnitus.Deafness is conductive type and tinnitus is pulsatile.

    Otoscopy show red reflex through intact TM. “Rising sun”appearance is seen.

    “Pulsation sign”(Brown’s sign) is positive.

    B) When tumour present as polyp: profuse bleeding from ear either spontaneously or after cleaning.

    Dizziness or vertigo and facial paralysis may appear . Earache less common otorrhoea due to secondary infection.Examionation reveals red vascular polyp.


Tumours of middle ear and mastoid

  • Cranial nerve palsies: It is a late feature .IX th to XII cranial nerves may be involved.dysphagia , hoarsness with unilateral paralysis of soft palate, pharynx and vocal cord.

  • Tumours may present as mass over mastoid or in nasopharynx.

  • Audible bruit over mastoid.

  • Some glomus tumours secrete catecholamines and produce their symptoms.

  • Rule of 10s:


Diagnosis

DIAGNOSIS:

1)CT scan head

2)MRI

3)Four vessel angiography

TREATMENT:

  • Surgical removal

  • Radiation

  • Embolisation

  • Combination of the above techniques


Carcinoma of middle ear and mastoid

CARCINOMA OF MIDDLE EAR AND MASTOID

AETIOLOGY:

Age- 40 to 60, females>males,chronic irritation may be the cause.

PATHOLOGY:

Tumour may arise primarily from middle ear or be an extension of ca of deep meatus . Squamous cell variety is most common .


Clinical features1

CLINICAL FEATURES:

  • CHRONIC FOUL SMELLING DISCHARGE SPECIALLY BLOOD STAINED.

  • PAIN USUALLY SEVER AND COMES AT NIGHT

  • FACIAL PALSY

  • FRIABLE HAEMORRHAGIC GRANULATIONS OR POLYP

  • APPEARANCE OF OR INCREASE IN DEAFNESS OR VERTIGO.


Diagnosis1

DIAGNOSIS

  • DEFINITIVE DIAGNOSIS IS MADE ONLY ON BIOPSY

  • EXTENT OF DISEASE IS JUDGED BY CLINICAL AND RADIOLOGICAL EXMINATION.

  • CT SCAN & ANGIOGRAPHY ARE USEFUL IN THE ASSESSMENT OF DISEASE.


Treatment

TREATMENT:

  • Combination of surgery and radiotherapy gives better results.


Tumours of middle ear and mastoid

Thank you


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