Malignant meningioma with jugular vein invasion and carotid artery extension: A case report and review of the literature

Figure 4 Microscopic pathology. A spindle cell malignant tumor with local osteogenesis; and vimentin (+ ), CK (-), EMA (+), CK5 / 6 (-), P40 (-), CD34 (-), S-100 (-), SMA (+), TTF-1 (-), calponin [small focus] (+), desmin (-), PR (-), D2-40 (-), E-CAD (-), and Ki-67 [+ (50%)]. In situ hybridization showed EBERs (-). The following diagnoses were considered: (1) Osteosarcoma; (2) Malignant meningiomas with heterogeneous differentiation; (3) Tumor tissue noted in the common carotid artery; (4) Tumor tissue noted in the brachiocephalic trunk; and (5) One tracheoesophageal lymph node without metastasis.