Patient complains of painless swelling over the face with difficulty in swallowing. The appearance of face is shown. The probabale diagnosis is:

Painless swelling usually points towards malignancy. Among the given options Acute parotitis and Acute sialadenitis can be excluded because they both are a painful condition. Angioedema of the face is characterized by the presence of swelling around the lips and around the oral cavity. Hence the answer is cancer of the parotid gland Among malignant tumors of the parotid gland, mucoepidermoid carcinoma is the most common followed by adenocystic carcinoma.