Metastatic colorectal cancer to the frontal sinus
Known metastatic colorectal cancer for staging, lump on forehead
Pre and post contrast study of the brain
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Large enhancing mass lesion containing micro-calcification centered on and eroding the inferior right frontal sinus causing it to be obstructed as evidenced by fluid more proximally (arrow). Note also cerebral parenchymal metastasis (arrow).
It is very unsual to see metastatic lesions in the paranasal sinuses even when malignant disease is advanced. The major issue with this disease is the differentiation from a primary adenocarcinoma of the sinus. In this case the patient has many other metastatic lesions including brain, liver and spinal column.
- N. Azarpira,M. J. Ashraf, B. Khademiand, N. Asadi Distant Metastases to Nasal Cavities and Paranasal Sinuses Case Series. Indian J Otolaryngol Head Neck Surg. Oct 2011; 63(4): 349–352. doi: 10.1007/s12070-011-0269-8 bin Sabir Husin Athar PP1, bte Ahmad Norhan N, bin Saim L, bin Md Rose I, bte Ramli R. Metastasis to the sinonasal tract from sigmoid colon adenocarcinoma. Ann Acad Med Singapore. 2008 Sep;37(9):788-3. PMID: 18989497