A case report of submandibular gland pleomorphic adenoma

Tumours of the salivary gland comprise of a small percentage of all head and neck tumours, of which nearly 80% are benign. The submandibular gland tumours constitute only 5-10% of this group, of which pleomorphic adenoma is the commonest type. We report a case of a large pleomorphic adenoma of submandibular salivary gland, presenting as a neck swelling. A 65 years old female presented with complaints of swelling over the front and right side of neck since 15 years. A MRI of neck revealed Evidence of a well-defined large T2 heterogenous nodular lesion is seen involving right side of neck from floor of mouth to supra-clavicular level, crossing midline to the left side and showing heterogeneous enhancement on post contrast study. It was seen to be involving adjacent skin. It showed few blooming area with in suggest calcification with in. It was causing significant mass effect inform of compression over right sternocleidomastoid muscle, trachea, right thyroid - submandibular gland and right IJV with maintained fat planes and left sided tracheal deviation. FNAC was suggestive of salivary gland neoplasm with a possibility of pleomorphic adenoma with moderate cytological atypia.