Sinonasal Cancer Treatment

Sinonasal cancers are rare but aggressive malignancies that arise from the nasal cavity and paranasal sinuses. Because early symptoms often mimic routine sinusitis, many patients present with locally advanced disease involving the orbit, skull base, or surrounding structures. Successful treatment demands a surgeon who can navigate these complex anatomical boundaries safely. Dr. Vidhyadharan Sivakumar, MCh (Head & Neck Surgery), FEB-ORL HNS, FICRS, brings dedicated skull base training and craniofacial resection expertise to every case he manages at THANC Hospital, Kilpauk, Chennai.

What Is Sinonasal Cancer?

Sinonasal cancer encompasses all malignant tumors originating from the paranasal sinuses (maxillary, ethmoid, frontal, and sphenoid) and the nasal cavity lining. These tumors account for roughly 3% of all head and neck cancers and fewer than 1% of all malignancies. Despite their rarity, they present significant surgical challenges because of their proximity to the eyes, brain, cranial nerves, and major blood vessels.

The paranasal sinuses are air-filled spaces within the facial bones that surround the nasal cavity. The maxillary sinus (beneath the cheek) is the most common site for sinus cancer, followed by the ethmoid sinuses (between the eyes). Tumors in the frontal and sphenoid sinuses are less common but can be particularly difficult to treat due to their deep location near the brain.

Types of Sinonasal Cancer

Different histological types carry distinct biological behaviors and treatment implications:

• Squamous cell carcinoma (SCC): The most common type, accounting for approximately 50-60% of sinonasal cancers. Often linked to smoking and occupational exposures.
• Adenocarcinoma: Associated with wood dust and leather dust exposure. More common in the ethmoid sinuses.
• Adenoid cystic carcinoma: A slow-growing but persistent tumor known for perineural spread (growing along nerves). Requires wide surgical margins.
• Esthesioneuroblastoma (olfactory neuroblastoma): Arises from olfactory nerve tissue high in the nasal cavity. Generally carries a better prognosis with appropriate multimodal treatment.
• Sinonasal undifferentiated carcinoma (SNUC): A highly aggressive tumor requiring combined chemotherapy, radiation, and surgery.
• Mucosal melanoma: A rare melanoma arising from the nasal lining, biologically different from skin melanoma and carrying a poorer prognosis.

Understanding the specific tumor type is critical because it directly determines the surgical approach, the need for adjuvant therapy, and the expected outcomes. This is why Dr. Vidhyadharan ensures that every patient undergoes thorough biopsy and immunohistochemistry analysis before finalizing a treatment plan.

Symptoms and Warning Signs

One of the greatest challenges with sinonasal cancer is that early symptoms closely resemble common conditions like chronic sinusitis or allergies. This often delays diagnosis by months or even years. Symptoms that should raise suspicion include:

• Persistent one-sided nasal blockage that does not respond to standard treatments
• Blood-stained nasal discharge or recurrent nosebleeds from one side
• Facial pain, swelling, or numbness, particularly on one side
• Loosening of upper teeth without dental cause
• Bulging or displacement of the eye (proptosis)
• Double vision or progressive loss of vision
• Persistent headaches or a sensation of fullness in the face
• Reduced or lost sense of smell

Any one-sided nasal symptom persisting beyond three to four weeks warrants evaluation by a specialist. Early detection directly improves surgical outcomes and survival. To understand how staging affects treatment decisions, refer to our detailed guide on head and neck cancer stages and what they mean for treatment.

Diagnosis and Staging

A comprehensive diagnostic workup at THANC Hospital includes:

• Nasal endoscopy: Direct visualization of the nasal cavity and sinuses using a flexible or rigid scope, allowing targeted biopsy of suspicious lesions.
• CT scan of the sinuses: Provides detailed bony anatomy, identifies bone erosion, and maps the extent of tumor involvement.
• MRI of the sinuses and skull base: Superior soft tissue resolution distinguishes tumor from trapped secretions and accurately delineates orbital and intracranial extension.
• PET-CT scan: Used for advanced cases to evaluate lymph node involvement and distant metastasis.
• Biopsy with immunohistochemistry: Essential for accurate histological classification, which drives treatment planning.

Staging follows the AJCC/TNM system specific to the nasal cavity and paranasal sinuses. Dr. Vidhyadharan reviews all imaging and pathology within a multidisciplinary tumor board at THANC Hospital, where surgical oncologists, radiation oncologists, medical oncologists, radiologists, and pathologists collaboratively determine the optimal treatment strategy.

Surgical Treatment Approaches

Surgery remains the primary treatment for most sinonasal cancers. The choice of surgical approach depends on tumor location, extent, histology, and involvement of surrounding structures. Dr. Vidhyadharan's MCh in Head & Neck Surgery from the Amrita Institute, combined with specialized skull base and craniofacial resection training, positions him to offer the full spectrum of surgical options.

Endoscopic Sinus Cancer Surgery

Endoscopic surgery has transformed the management of select sinonasal tumors. Using high-definition cameras and angled endoscopes inserted through the nostrils, the surgeon can remove tumors with precision while avoiding external incisions.

Advantages of the endoscopic approach include:

• No facial scars or external incisions
• Reduced surgical trauma and blood loss
• Shorter hospital stay (typically 3-5 days)
• Faster recovery and return to normal activities
• Lower rates of cerebrospinal fluid leak with modern reconstruction techniques

Endoscopic resection is best suited for tumors confined to the nasal cavity and ethmoid sinuses without extensive lateral maxillary wall, orbital, or dural involvement. Dr. Vidhyadharan's endoscopic skull base experience allows him to resect tumors extending to the anterior skull base through a purely endonasal approach in carefully selected patients.

Open Craniofacial Resection

For advanced tumors involving the anterior skull base, orbit, or extensive maxillary sinus disease, open craniofacial resection remains the gold standard. This procedure combines a facial approach (lateral rhinotomy or midfacial degloving) with a cranial approach performed in collaboration with a neurosurgeon.

Craniofacial resection allows:

• En bloc removal of tumor with adequate margins, including involved dura or periorbita
• Direct visualization of the surgical field for complete tumor clearance
• Simultaneous reconstruction of skull base defects to prevent cerebrospinal fluid leak and protect the brain

Dr. Vidhyadharan's dedicated training in craniofacial resection and skull base surgery ensures that patients with advanced sinonasal cancers have access to this specialized procedure without needing to travel outside Chennai.

Maxillectomy

Tumors arising from or extending into the maxillary sinus may require partial or total maxillectomy (removal of the upper jaw bone). The extent of bone removal depends on tumor size and location:

• Partial (infrastructure) maxillectomy: Removes the lower portion of the maxilla, preserving the orbital floor.
• Total maxillectomy: Removes the entire maxilla, including the orbital floor.
• Radical maxillectomy with orbital exenteration: Required when the tumor invades the orbit and the eye cannot be preserved.

Comparison of Surgical Approaches

The decision between endoscopic and open approaches is never one-size-fits-all. Dr. Vidhyadharan evaluates each case individually, prioritizing complete tumor removal while maximizing functional preservation. For deeper context on how modern treatment has improved survival across head and neck cancer types, read our overview on head and neck cancer survival rates and modern treatment advances.

Reconstruction After Sinonasal Cancer Surgery

Large surgical defects following maxillectomy or craniofacial resection require thoughtful reconstruction to restore form and function. Options include:

• Prosthetic obturator: A dental prosthesis that fills the maxillary defect, restoring speech and swallowing. Suitable for patients who are not candidates for or prefer to avoid additional surgery.
• Local and regional flaps: Tissue from adjacent areas (temporalis muscle flap, pericranial flap) used to cover skull base defects and separate the nasal cavity from the brain.
• Free tissue transfer (microvascular free flaps): For large defects, free flaps from the thigh (anterolateral thigh flap), forearm (radial forearm flap), or fibula bone provide durable soft tissue and bone reconstruction.

Dr. Vidhyadharan's microsurgery and reconstruction fellowship at Chang Gung Memorial Hospital in Taiwan, one of the world's highest-volume microsurgery centers, gives him particular expertise in complex free flap reconstruction. This training means patients at THANC Hospital receive their cancer resection and reconstruction from the same surgeon in a single operation, ensuring seamless coordination between tumor removal and functional restoration.

Adjuvant Therapy: Radiation and Chemotherapy

Surgery alone is rarely sufficient for sinonasal cancers. Most patients benefit from adjuvant (post-surgical) radiation therapy to eliminate microscopic residual disease and reduce the risk of local recurrence. Radiation is particularly important when:

• Surgical margins are close or positive
• The tumor is high-grade or has aggressive histology (SNUC, mucosal melanoma)
• There is perineural or lymphovascular invasion
• The tumor extends to the skull base or orbit

For certain histologies, such as SNUC and sinonasal neuroendocrine carcinoma, concurrent chemotherapy with radiation (chemoradiation) is recommended. The multidisciplinary team at THANC Hospital coordinates the transition from surgery to adjuvant therapy, ensuring minimal delays that could compromise outcomes.

Prognosis and Survival

Survival rates for sinonasal cancer vary significantly based on tumor type, stage at diagnosis, and completeness of surgical resection:

The most important prognostic factor is achieving complete surgical resection with clear margins. This underscores the critical importance of choosing a surgeon with specific expertise in sinonasal and skull base surgery. Early-stage disease treated with complete resection and adjuvant radiation has substantially better outcomes than advanced disease requiring palliative approaches.

Risk Factors and Prevention

Established risk factors for sinonasal cancer include:

• Occupational exposures: Wood dust (furniture, carpentry), leather dust, nickel compounds, chromium, formaldehyde, and isopropyl alcohol. Workers in these industries carry a significantly elevated risk, particularly for adenocarcinoma.
• Tobacco smoking: Increases the risk of squamous cell carcinoma of the sinuses.
• HPV infection: Emerging evidence links HPV to a subset of sinonasal squamous cell carcinomas.
• Chronic sinusitis and nasal polyps: Long-standing inflammation may contribute to malignant transformation in rare cases.

Prevention strategies focus on workplace safety measures including proper ventilation, dust extraction systems, and personal protective equipment for workers in high-risk industries. Regular occupational health screening can help detect early changes before they progress to cancer.

Why Choose Dr. Vidhyadharan for Sinonasal Cancer Surgery

Sinonasal cancer surgery demands a surgeon with specialized head and neck cancer training that goes beyond general surgical oncology. Dr. Vidhyadharan Sivakumar's qualifications are specifically aligned with the demands of sinonasal tumor surgery:

• MCh (Head & Neck Surgery) from Amrita Institute, providing dedicated superspecialty training in complex head and neck cancer resections including craniofacial approaches
• Fellow, European Board of Otorhinolaryngology (FEB-ORL HNS), reflecting internationally benchmarked competence
• Fellow, Indian College of Robotic Surgeons (FICRS), with expertise in advanced minimally invasive techniques
• Microsurgery and reconstruction fellowship at Chang Gung Memorial Hospital, Taiwan, one of the world's leading centers for head and neck microvascular reconstruction
• 3000+ complex head and neck surgeries across a career spanning 20+ years
• Training across 8 countries including Australia, Singapore, Korea, Taiwan, and Canada
• Co-editor of Comprehensive Management of Head and Neck Cancer (Jaypee Brothers, 2021)

This depth of training means that whether a patient needs a precise endoscopic resection or a complex craniofacial resection with free flap reconstruction, the expertise is available under one roof at THANC Hospital.

Take the Next Step

If you or a family member has been diagnosed with sinonasal cancer or has persistent one-sided nasal symptoms that are not resolving with standard treatment, a specialized evaluation can make the difference between early and late-stage diagnosis. Dr. Vidhyadharan and the multidisciplinary team at THANC Hospital are equipped to provide comprehensive evaluation, surgical management, and coordinated adjuvant therapy.

Phone: +91 73059 53378 Location: THANC Hospital, 747 Poonamallee High Road, Kilpauk, Chennai 600010 Book an Appointment

References

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