Soft Palate Function and Clinical Significance

Respiratory and Sleep-Related Functions

• The soft palate is involved in the genesis of snoring and obstructive sleep apnea syndrome, according to the American Thoracic Society 1

Speech and Swallowing Functions

• The soft palate elevates to separate the nasopharynx from the oropharynx during speech and swallowing, as recommended by the American College of Radiology 2
• Proper soft palate function prevents hypernasality and maintains normal speech intelligibility, as stated by the American College of Medical Genetics and Genomics 3

Clinical Significance in Head and Neck Cancer

• The soft palate is recognized as a distinct anatomic subsite within the oropharynx, classified as part of the oropharynx, distinct from the oral cavity, according to the National Comprehensive Cancer Network 4
• Tumors can arise from or extend to the soft palate, affecting adjacent structures including the tonsillar pillar and nasal cavity, as reported by the College of American Pathologists 5 and the College of American Pathologists 6

Surgical Considerations

• Excision of the soft palate results in speech and swallowing deficits, including severe rhinolalia and velopharyngeal insufficiency in approximately 5% of cases even with limited soft palate involvement, as noted by the American Society of Clinical Oncology 7, the American Society of Clinical Oncology 8, and the American Society of Clinical Oncology 9

Congenital Abnormalities

• Approximately two-thirds of children with 22q11.2 deletion syndrome have palatal abnormalities, including velopharyngeal dysfunction with or without submucous cleft palate, as reported by the American College of Medical Genetics and Genomics 10 and the American College of Medical Genetics and Genomics 3