Benign neoplasm of spinal cord . C1 vertebral mass. Please provide biopsy Serial CT images obtained during the biopsy procedure demonstrate the needle placement within the C1 vertebral lesion. There is a soft tisse mass eroding and replacing the right half of the C1 vertebral body which partially involves right vertebral artery compresses the right jugular vein against the styloid process and displaces the right internal coronary inferiorly. The tumor extends to the dural surface and into the perivertebral space and measures 5.3 by 3.3 cm greatest axial dimensions and 3.3 cm greatest superior inferior dimension with a 5 cm AP dimension. The mass enhances following contrast administration. Follow-up scan indicates the biopsy was obtained from the center of the tumor. The right jugulodigastric node there measures 11 x 11 mm axial dimensions but does not meet the size criteria for lymphadenopathyIncidental note is made of numerous tonsilliths
1.C1 vertebral bone biopsy under CT guidance. samples were delivered to pathology for analysis. The cytologist preliminarily reported suspected plasmacytoma. The tumor essentially replaces the right sided bony elements of C1 and extends to displace adjacent critical vessels . It compresses RIJV against the styloid, displaces and mildly encases RVA which is the nondominant vertebral artery and displaces RICA.