Disease Description (Causes and Symptoms)
- Definition: A tumor occurring in the nasopharynx (the upper one-third of the pharynx, extending from the soft palate to the base of the brain). Benign tumors are rare, while malignant tumors mainly originate from squamous epithelial cells (keratinizing, non-keratinizing, and undifferentiated types); rarely, lymphoma, adenocarcinoma, malignant melanoma, and others may occur.
- Main causes/related factors:
- Strong association with Epstein-Barr virus (EBV) infection (especially the undifferentiated type).
- Genetic predisposition and immunosuppression have been suggested as risk factors.
- Pathophysiology (brief):
- A tumor arising from the epithelium locally infiltrates and invades adjacent structures (the nasal cavity, auditory tube, skull base, etc.), and lymph node metastasis is common. Obstruction of the auditory tube opening causes abnormalities in the middle-ear ventilation system (otitis media with effusion). Cranial nerve symptoms may occur when the skull base is invaded.
- Main symptoms:
- A lump in the neck (enlarged cervical lymph nodes, commonly an early symptom)
- Nasal congestion, recurrent nosebleeds, or blood-stained nasal discharge
- A feeling of blockage in one ear and conductive hearing loss, or hearing loss due to otitis media with effusion
- Double vision (cranial nerve involvement) and facial pain (related to the trigeminal nerve)
- Local pain, weight loss, and systemic symptoms (depending on whether metastasis is present at diagnosis)
Treatment Methods
- Treatment principles after diagnosis:
- Treatment varies depending on the stage and pathology (histologic type). Typically, radiation therapy is the first-line treatment, with chemotherapy added concurrently or as adjuvant therapy depending on the stage and risk level.
- Standard treatment (summary):
- Localized lesion (benign): Surgical excision, including an endoscopic approach, is generally recommended.
- Malignant (nasopharyngeal cancer):
- Localized/locally advanced lesions: Radiation therapy (stereotactic radiation, IMRT, etc.) for strong local control → treatment response is generally favorable.
- High-risk or advanced disease (e.g., N+ or T3–T4): Concurrent chemoradiotherapy — cisplatin-based combination therapy is commonly used as the standard chemotherapy regimen.
- Metastatic/recurrent disease: Systemic chemotherapy (platinum-based), targeted therapy, or immunotherapy may be considered depending on the patient’s condition and clinical trial evidence.
- Surgery: Used selectively to overcome skull-base involvement or for residual or recurrent lesions when structural access is possible. Most squamous cell carcinomas are sensitive to radiation.
- Supportive care and symptom management:
- Hearing loss due to otitis media with effusion: Otolaryngologic intervention (e.g., tympanostomy tube insertion) and hearing aids may be considered.
- Pain and nutritional management, and oral and dental care (before and after radiation therapy)
- Prevention and treatment of radiation-related side effects (oral mucositis, dry mouth, laryngitis, hearing loss, etc.)
- Precautions (self-care during/after treatment):
- Infection risk, fatigue, oral mucositis, and reduced salivary gland function may occur during radiation and chemotherapy — report symptoms to the treating physician immediately.
- Maintain thorough oral hygiene (dental evaluation is recommended); consider treating dental problems before radiation therapy.
- Consult an otolaryngologist if hearing changes, tinnitus, or ear pain occurs.
- Treatment during pregnancy poses risks to the fetus — women of childbearing age need contraceptive counseling.
- Complications (which may result from treatment or the disease itself):
- Skull-base cranial nerve palsy due to local invasion (e.g., double vision), chronic otitis media and hearing loss, lymph node and distant metastasis (lungs, bones, liver), and radiation-related complications (dry mouth, dental damage, osteonecrosis, etc.)
Checklist Before an Outpatient Visit (Including Example Questions)
- Items to prepare (bring with you):
- A complete list of all medications currently being taken (prescription drugs, OTC medications, herbal medicines, etc.) and information about drug allergies
- Previous test results (biopsy reports, CT/MRI, PET/CT, chest X-ray, hearing test results, etc.) — if possible, the originals or information for accessing the CD/PACS
- A record of symptom onset and progression (the date symptoms began, when they worsened or improved, and their impact on daily life)
- Records of weight changes, whether difficulty swallowing is present, fever, and other systemic symptoms
- For women, recent pregnancy or breastfeeding status and menstrual cycle information
- Items to tell the doctor in advance during the visit:
- Whether you are taking anticoagulants and whether you have comorbidities such as diabetes or cardiopulmonary disease
- A history of previous radiation therapy or chemotherapy
- Items useful to show the doctor during the outpatient visit:
- Photos of the neck (changes in the location and size of the lump) and photos showing nosebleeds or nasal discharge mixed with blood (if possible)
- Example questions (including questions to present to the doctor):
- Regarding symptoms: How should I respond immediately if symptoms (a neck lump, nosebleeds, or hearing loss) worsen?
- Regarding testing: What additional tests are needed to determine the tumor’s exact stage and whether it has metastasized?
- Regarding the treatment plan: Once my stage is confirmed, what are the standard treatment options, and how long is the expected treatment period?
General Example Questions to Ask the Doctor
- What is the exact histologic type (type 1/2/3) and stage of this disease? How does this affect the prognosis?
- What are the standard treatment options and the expected benefits and side effects (short-term and long-term) of each treatment?
- What should I prepare to minimize treatment-related hearing loss, reduced salivary gland function, and dental problems?
- How will follow-up testing be conducted after treatment (frequency and types)? Is EBV DNA testing useful for follow-up?
Disease-Specific Example Questions
- Has EBV-related testing (blood EBV DNA or tissue EBV testing) been performed for my tumor? What significance do the results have for treatment and follow-up?
- Is radiation therapy alone sufficient in my case, or is concurrent chemotherapy recommended? What is the basis for this recommendation, and what side effects can be expected?
(If needed, providing test results or a pathology report can help organize more specific and personalized consultation points.)