Sphenoid Squamous Cell Carcinoma: A Case Report
Introduction: Neoplasms of the paranasal sinuses are rare, they represent approximately 3% of head and neck cancers, and 0.5 to 0.8% of all malignant tumors. The most common neoplasm is squamous cell carcinoma and its most common site is the maxillary antrum, which may also arise in the ethmoid sinus. The origin in the frontal and sphenoid sinuses is rare.
Objectives: The aim of this study is to report a case of a patient complaining of unilateral nasal obstruction and pay attention to frequent late diagnosis of a rare disease in an unusual location.
Resumed Report: A 34-year-old male patient, without comorbidities or history of smoking, complains of unilateral nasal obstruction initially without nosebleed associated or other symptoms. After initial clinical evaluation and complementary examinations (nasal endoscopy and computed tomography of the sinuses), was suggested diagnostic of sinonasal polyposis. During the follow-up, the patient had frequent episodes of epistaxis, sometimes needing nasal packing. The patient underwent endoscopic sinus surgery for removal of vegetative lesion, presenting the award freezing suggestive of malignancy and histopathological diagnosis of infiltrating poorly differentiated squamous cell carcinoma.
Conclusion: Generally, sinonasal tumors are identified and treated in advanced stages because they are, in most cases, oligosymptomatic, and mimic benign inflammatory conditions. With early clinic evaluation and the increased use of nasal endoscopy, it is expected that these tumors can be identified earlier in the disease's progression.