MUCINOUS RETENTION CYST OF PAROTID

Mucinous retention cyst – Cyst lined by macrophages , chronic inflammatory cells and focal squamous epithelium. Adjacent fibrocollagenous tissue shows benign acini arranged in lobules (H&E,X50)

Mucinous retention cyst – Cyst lined by macrophages and chronic inflammatory cells. Adjacent fibrocollagenous tissue shows lobules of benign acini (H&E,X50)

Mucinous retention cyst – Cyst lined by macrophages , chronic inflammatory cells and focal squamous epithelium. Adjacent fibrocollagenous tissue shows benign acini arranged in lobules (H&E, X100)

Mucinous retention cyst – Tissue lined by stratified squamous epithelium. Underlying fibrocollagenous stroma shows cyst lined by granulation tissue (H&E,X100)

Mucinous retention cyst – Cyst lined by foamy macrophages. Adjacent fibrocollagenous tissue shows lobules of benign acini  (H&E,X400).

Mucinous retention cyst – Cyst lined by foamy macrophages and chronic inflammatory cells (H&E,X400)

Mucinous retention cyst – Cyst lined by chronic inflammatory cells and macrophages. Lumen of the cyst shows famy macrophages (H&E,X400)