Preface:
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I'm worldbuilding for a story that has been in my head for ages, it's a kinda SciFi/Fantasy combo. There is one "godlike" being that can alter how physics work in a certain area, and it's the source of all "super-tech" in this world. 

Real science has not advanced much from our own, no FTL engines nor food replicators or anything of the sort. All the "SciFi/Fantasy" is perpretated either by this godlike being, or his "clerics". The clerics have a connection with this being, and can borrow it's powers. Spaceships need a Cleric if they want to travel farther than the moon, as the Cleric can teleport the whole ship to the destination, generate artificial gravity, and operate a lot of systems that depend on "magic" to work, as they are not feasible today.

These Clerics are already a necessity in my spacefaring society, but I was thinking of ways to make them more essential. One such way, commonly associated in Fantasy tropes, is healing.

There is not much one can do to heal others by means of altering the laws of physics, but I thought that maybe teleporting "things" in and out of a body could be a way for a Cleric to "heal".

I'm no medic, so this might be super wrong but... Could one teleport away a cancer tumor? Or the appendix? Or teleport "in" a pacemaker? Maybe teleport away fluid from the skull instead of having to perforate it for release when it builds up.

Actual question:
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1. Would teleporting objects in or out of the patient body be a "useful" medical practice?
2. Teleporting away a tumor, for example, would that cause internal bleeding and horrible death? Could you teleport something "in" to "seal" the wound and avoid it?

Notes:
I haven't decided if teleporting swaps the positions of the mass from point A to point B, or if when A arrives to destination pushes other mass away, or gets "entangled" with it.
You can choose whatever you decide is best for your answer

### Added Info

**How precise can they be?:** They need to figure out the shape, size and position of what they need to teleport. The mass is nos needed, they define an area in space and teleport whatever is inside it. They can be as precise as the tools for detection allows them. Figure that what is now the high end in diagnostic tools (X-Rays, MRI, TAG, etc...) is commonplace then. I figure this wouldn't be milimetrical, but I'm no expert.

When teleporting things that they can see and touch, their precision is very good, and having a good scanning equipment and dedicating time to define the area to teleport, they can be almost perfectly accurate.

**What can they teleport?** Individual cells? Yes, if their detection tool is precise enough, the rest depends on the skill of the teleporter. Assume some specialice in minute teleports and are very skilled at this. They would not be able to teleport away the solute from the solvent in a homogenous solution. I don't see how, at least. That means they can't take away posion from the blood stream, for example.

I'm ok with this being niche in utility, as long as it has some. The interest in this is making Clerics a little more ubiquitous, and necessary for some things, or even a luxury: Ff Mr.Richman can afford a "teleport surgery" for his son but Mr.Everyman has to bring him to the hospital, expose his child to surgery, recovery time, etc...