Thumb sign on CT head is seen in?: (A) Chordoma, (B) Metastasis, (C) Glioblastoma multiforme, (D) Astrocytoma
Answer is A. Thumb sign on CT head is seen in Chordoma. Sella Chordoma Presents with bony clivus erosion and local invasion. Calcification also occurs On FNAC- mucinous material obtained