Malignant tumors of the sinonasal tract
D Goldenberg, RP Tufano, BJ Goldstein
Departments of Otolaryngology, Head and Neck Surgery, Johns Hopkins University School of Medicine, USA
Departments of Otolaryngology, Head and Neck Surgery, Johns Hopkins University School of Medicine
|How to cite this article:|
Goldenberg D, Tufano R P, Goldstein B J. Malignant tumors of the sinonasal tract.J Postgrad Med 2005;51:35-35
|How to cite this URL:|
Goldenberg D, Tufano R P, Goldstein B J. Malignant tumors of the sinonasal tract. J Postgrad Med [serial online] 2005 [cited 2020 Nov 25 ];51:35-35
Available from: https://www.jpgmonline.com/text.asp?2005/51/1/35/14541
Malignant tumors of the sinonasal tract are extremely rare, accounting for 0.2% of all invasive cancers and 3% of head and neck cancers. The majority arise in the maxillary sinus, approximately 20% arise in the ethmoid sinuses, and the remainder (et al, clinical presentation of sinus malignancies is non-specific and often mimics benign disease. Indeed, 9-12% of patients with sinonasal malignancies are asymptomatic. It is not surprising that delay in diagnosis is common; 75% of all paranasal sinus tumors are Stage T3 or T4 at the time of diagnosis. Involvement of cranial nerves is a manifestation of advanced disease and indicates a poor prognosis. A palpable neck mass signifies metastatic adenopathy in the jugular chain and is also a sign of advanced disease.
Patient evaluation should include history, complete head and neck examination with nasal endoscopy, imaging and biopsy. Special attention should be paid to cranial nerve function since malignant paranasal tumors are associated with a high incidence of cranial neuropathies compared with inflammatory or benign sinus disease.
Radiological imaging is essential during the initial evaluation. Patients with risk factors or positive exam findings should undergo CT scanning. MRI is useful to differentiate between mass and inspissated fluid secretions, and also may reveal soft tissue and perineural tumor spread. These two modalities complement each other in evaluating and staging a sinonasal tract mass. FDG expand PET scanning may also be useful in differentiating inflammatory from neoplastic disease, and is under active investigation.
Currently, most Stage T1 or T2 maxillary sinus carcinomas are treated by surgery alone, provided adequate resection margins are obtained, while T3 and T4 lesions are treated by combination therapy with surgery and radiation. The issue regarding whether radiation is more effective before or after surgery remains controversial. Chemotherapy alone is generally used as a palliative measure. Despite improvements in surgical ablative and reconstructive techniques, radiation delivery modalities, and imaging technologies, disease-free survival at five years remains less than 50%, independent of stage. Disease-free survival for patients with advanced stage cancer drops to 25%. The key in the diagnosis and treatment of sinonasal cancers remains a high index of suspicion and early diagnosis.
The retrospective review by Panchal et al provides a nice summary of the ten-year experience with sinonasal tumors at one institution. Although other large series have been reported, this paper does add to that literature and provides histopathological data from an Indian patient population.
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