Micrograph of<unk>  in the centre of the field in a meningioma of brain. H&E stain. A<unk>  is a round collection of calcium, seen microscopically. The term is derived from the Greek word ψάμμος (psámmos), meaning "sand".
Psammoma body
Keratin pearl
Polyp 
Milker's nodule
Councilman body
Elliptocyte
Sertoli cell nodule
Pseudopolyps