Morphological pattern of parotid gland tumours.
OBJECTIVE
To determine the morphological pattern of parotid tumours.


METHODS
Case series.


METHODS
ENT Department of Karachi Medical and Dental College and Abbasi Shaheed Hospital, Karachi, from 1990 to 2004.


METHODS
During this study, 204 patients with parotid tumours were registered. The patients of all ages and both gender were included in this study. All patients were evaluated by history, clinical examination, F.N.A.C. and ultrasound, C.T/MRI was done in selected cases. All patients were surgically managed and their tumour specimen was sent for histopathology. Classification of individual tumour was based on 1991 World Health Organization Classification. Discrete data was presented in percentage and proportions.


RESULTS
Out of 204 cases, 152 (74.5%) were benign and 52 (25.5%) were malignant. Of these, 117 (57.35%) patients were females and 87 (42.65%) males. Benign tumours were more common in females whereas malignant tumours were common in males. The mean age of patients was 34 years and 42 years for benign and malignant tumours respectively. Pleomorphic adenoma was most common benign tumor (83.5%), followed by Warthins tumour. The most common malignant tumour was mucoepidermoid carcinoma (60%), followed by adenoid cystic carcinoma. Superficial lobe of parotid gland was the commonest site, 120 benign and all 52 malignant tumours arising from it while 32 benign tumours originated from deep lobe. Parotid swelling for years was main feature of benign tumours, whereas malignant tumours presented with pain, fixation to skin or underlying structure, cervical lymphadenopathy and facial palsy.


CONCLUSIONS
Pleomorphic adenoma was the most common benign tumour and mucoepidermoid carcinoma was most common malignant tumour. The morphological patterns and distribution followed the known pattern.
Department of ENT, Karachi Medical & Dental College and Abbasi Shaheed Hospital, Karachi, Pakistan. ayubmusani@yahoo.com
Mohammed Ayub
MA
Musani
Zahid
Z
Sohail
Sabbas
S
Zafar
Shoukat
S
Malik
D000293:Adolescent; D000328:Adult; D000368:Aged; D044963:Biopsy, Fine-Needle; D002648:Child; D003937:Diagnosis, Differential; D018450:Disease Progression; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009017:Morbidity / Q000639:trends; D009367:Neoplasm Staging / Q000379:methods; D010154:Pakistan / Q000453:epidemiology; D010307:Parotid Neoplasms / Q000145:classification / Q000175:diagnosis* / Q000453:epidemiology; D012189:Retrospective Studies; D012720:Severity of Illness Index; D014057:Tomography, X-Ray Computed