Anatomy Pelvis Head Neck · Year 1 · from Anatomy Pelvis Head Neck
Case 3: Jugular Foramen Syndrome (Vernet Syndrome)
Patient Demographics
- Age: 64 years old
- Sex: Female
- Occupation: Retired librarian
Chief Complaint
Difficulty swallowing, hoarse voice, and neck pain for 2 months.
History of Present Illness
The patient has experienced progressive difficulty swallowing, particularly liquids, with frequent coughing and choking during meals. Her voice has become progressively hoarse and weak. She also reports a persistent dull ache at the base of her skull and right side of the neck. She has noticed that her right shoulder "feels weak" when lifting objects. She has lost 12 pounds over the past 2 months due to eating less. She has a history of breast cancer treated with mastectomy 5 years ago.
Physical Examination
- Vitals: Within normal limits
- Cranial nerve examination:
- CN IX (glossopharyngeal): Absent gag reflex on right; loss of taste on posterior tongue (right)
- CN X (vagus): Hoarse voice; uvula deviates to the left on phonation; right vocal fold paralysis on laryngoscopy
- CN XI (accessory): Weakness of right trapezius (shoulder shrug); weakness of right sternocleidomastoid (head rotation to left)
- CN XII (hypoglossal): Tongue deviates to the right on protrusion; atrophy and fasciculations of right tongue
- Neck: Palpable firm mass at the right skull base/upper neck
Imaging Workup
- CT skull base with contrast: Destructive lesion involving the right jugular foramen with extension to the hypoglossal canal
- MRI brain and neck: Enhancing mass centered at the right jugular foramen measuring 3.5 cm, invading the skull base and encasing the jugular vein
- CT chest/abdomen/pelvis: No other sites of metastatic disease
- PET-CT: FDG-avid skull base lesion consistent with metastatic disease
Diagnosis
Jugular foramen syndrome (Vernet syndrome) with hypoglossal involvement, secondary to metastatic breast carcinoma.
Anatomical Correlation
The jugular foramen transmits cranial nerves IX (glossopharyngeal), X (vagus), and XI (accessory), along with the internal jugular vein and inferior petrosal sinus. These three nerves exit the skull in close proximity and can be affected together by lesions at the skull base. CN IX provides sensory innervation to the posterior tongue, pharynx, and middle ear; motor innervation to the stylopharyngeus; parasympathetic fibers to the parotid gland; and the afferent limb of the gag reflex. CN X provides motor innervation to the palate, pharynx, and larynx; parasympathetic innervation to thoracic and abdominal viscera; and both afferent and efferent limbs of the gag reflex. CN XI innervates the sternocleidomastoid and trapezius muscles. The hypoglossal canal lies anteromedial to the jugular foramen and transmits CN XII. Extension of the lesion into this canal explains the tongue weakness and deviation. When the hypoglossal nerve is damaged (lower motor neuron lesion), the tongue deviates toward the weak side because the intact genioglossus on the opposite side pushes the tongue toward the paralyzed side.
Treatment
- Oncologic staging and treatment: Systemic therapy for metastatic breast cancer
- Radiation therapy: Palliative radiation to skull base lesion for local control and pain
- Swallowing rehabilitation: Speech therapy for safe swallowing techniques
- Aspiration precautions: Modified diet consistency; consider feeding tube if severe aspiration risk
- Palliative care: Pain management; goals of care discussion