Summary of patient histories and US findings
| No. | Age (yr) | Sex | History | Clinical Details on Referral | US findings |
|---|---|---|---|---|---|
| 1 | 50 | M | Squamous cell carcinoma of the tonsil, neck dissection | Hypoglossal nerve palsy | Scar tissue around the nerve (Fig 3) |
| 2 | 72 | M | Squamous cell carcinoma of the tongue base | Hypoglossal nerve palsy | Tumor infiltration of the nerve (Fig 4) |
| 3 | 33 | F | Facial nerve end-to-side coaptation to the hypoglossal nerve after tongue palsy after cerebellopontine angle tumor resection | Tongue paresis | Nerve coaptation site with focal hypoglossal nerve thickening (Fig 5) |
| 4 | 68 | F | Partial hypoglossal nerve transfer for facial nerve reconstruction after malignant parotid gland tumor resection | Tongue weakness | Nerve transfer site with focal thickening and fibrosis |
| 5 | 48 | M | Squamous cell carcinoma of the tonsil, neck dissection, radiotherapy, chemotherapy | Hypoglossal palsy | Scar tissue entrapment of the hypoglossal nerve |
| 6 | 55 | M | Neurofibromatosis | Screening | Neurofibroma (Fig 6) |