Organizing thrombus

A pedunculated growth with a smooth

Glistening and transparent surface

A stratified and friable surface

Soft, gelatinous consistency

Granular, opaque exterior

Absence of hemosiderin

Abundance of hemosiderin and fibrin

Mucin positive

Absence of mucin

Covered with intact endocardium

A wide base with underlying endocardial lesion

Rooted into myocardium

A distinct demarcation from the myocardium