Actinomycosis is an uncommon chronic disease usually caused by Actinom
yces israelii. It affects the soft tissue mainly but sometimes spreads
to involve salivary glands, bone, or even the skin of the face and ne
ck. Five cases have been seen in our department. Several imaging modal
ities were used to assist in making the diagnosis. The cases are prese
nted and the literature reviewed. Ultrasonography was found to be a us
eful diagnostic tool especially in developing the differential diagnos
is.