MEDRADSC 2S03 Lecture Notes - Lecture 4: Cervical Lymph Nodes, Masseter Muscle, Lymph Node

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 2S03
• Professor: Dawn Danko

Document Summary

Make and release saliva, which contains water, electrolytes, mucus and enzymes. Exocrine glands - release saliva into ducts. Parotid tumours in children tend to be malignant more often than parotid tumours in adults. Benign tumours average age 40 years. Malignant tumours average age 55 years. Spread to lymph nodes based on head and neck drainage patterns. Incidence of cervical ln involvement varies depending on histological subtype. Lung metastases may lay dormant for years. Biopsy may be a fine needle aspiration biopsy. Ultrasound (to guide biopsy and assess gland and nodes) Ct and mr cannot distinguish between benign and malignant but can be used for assessing spread. Pet may be used to look for distant metastases. Location (sublingual, minor salivary glands, submandibular worse than parotid) Loss of facial movement (facial nerve palsy) Superficial parotidectomy - removes part of parotid gland. Total parotidectomy - removes all of parotid gland. Wide excision - treats sublingual and minor salivary gland tumours.