A 54 year-old woman with an enhancing right frontal mass associated with substantial edema. This photo is obtained from the intraoperative cytologic preparation.  The most likely diagnosis is:

A. Metastatic adenocarcinoma.

B. Secretary meningioma.

C. Metastatic melanoma.

D. Glioblastoma.

E. Oligodendroglioma.

Answer and Discussion