 Hi everyone, my name is Dr. Mohit and I'll be presenting on spindle cell carcuma in mexilir sinus. Spindle cell carcuma is an unusual form of squamous cell carcuma that is being specified by WHO as a biophysic tumor including malignant mesenchymal and epithelial elements. It shows an aggressive behavior and poor nurses also called as eutocercoma, sarcomandrat carcinomas and spindle cell or polypart squamous cell carcinomas. This tumor involves various sites such as esophagus, upper aero digestive tract, GIT, breast hepatobiliary systems and genital artery system. It has a predilection for male patients ranging between six and eight decades of the life. Also associated history of alcohol abuse, smoking and radiation is present. Imaging is important because it helps in assessment of tumor size, nature, extent and invasion of which CT is the most commonly used modality because of wider availability, easy access, lower cost. Also CT scan helps in effectively detecting calcification and bone invasion which helps differentiating between adenocarcinomas, inverted peplomas, fungal sinusitis and dendric arrest tumors. My patient was a 50-year-old maid who presented with complaints of headache, nasal discharge, nasal bleed, swelling in right myxilir region since 8 months. During this period, he was using nasal decontestant to relieve the obstruction. However, other examinations and neuro-autological and ocular examination was normal. The patient did not show any history of trauma and use of alcohol or tobacco. A clinical examination on perform and patient showed a swelling in the right side of the face. Also, a CT scan was done and it showed the following. The following images were taken in both non-contrast and contrast enhanced phases in axial, coronal and societal planes which reveals heterogeneously enhancing soft tissue density lesions involving right myxilir sinus, right ethnoid, right nasal cavity and right sonoid sinus also involving retro myxilir region with bony destruction. On histopathology, the lesion words proved to be a spindle cell carcinoma. Or cyclomatode carcinomas are rare carcinomas that involve many parts of the body such as digestive and respiratory tract. When it involves a hollow viscous, it usually presents as polypoid or pedunculated form. The occurrence of this tumor is in nasal cavity and paranesial sinus is rare, which is being corroborated by English literature. Also, this carcinoma is a predilection for male patients ranging between 3rd to 10th of the life. History of tobacco, alcohol abuse and previous radiation history are considered important predisposing factors. Various studies have shown that epithelial cell component is positive for keratin and negative for bementing whereas spindle cell component is reactive for bementing but non-reactive for keratin. Conclusion. The non-specificity of symptoms make it difficult to diagnose this carcinoma. However, multiple modalities such as CT and MRI are invaluable tools in clinching the diagnosis. So, I end up my presentation with spindle cell carcinoma involving the right mexiline sinus. Thank you.