disappearing geometry near the edge of scene window

I have a scene that has a virtual patient. I am using a free camera in the scene, and I am having an issue where the right side edge of the scene window is close to the patient, the head and the entire body goes invisible.  I attached some images to illustrate, but is this an issue where the camera frustum edge is making geometry invisible? Is there a way to make adjustments to it so that I am not clipping my virtual patient?

headOn.png - shows how the patient is normally

headOff.png - what happens when the patient is near the edge of the window. He will disappear completely if he is closer. 

Thanks in advance