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Celiac disease may inhibit childhood growth and some times that is the
only sign of it.  It can also not inhibit growth in height but make
skinny kids or in some cases you can have some quite tall celiacs.  The
tallest celiac ( not diagnosed until 34yrs was 6' 8" and tallest female
was 6' 3".  The heavyiest untreated patient was 400 lbs with most of my
patients being normal or overweight at the time of diagnosis.  The
nutritional impact of celiac disease depends on many factors both the
extent and duration of the damage the ability of the body to compensate
for the defect and dietary compensation.
The growth patteerns can raise the suspicion of celiac disease but a
normal growth pattern should put the doctor off either.  The adage " you
cant have that because you are too tall or too heavy" is wrong.
Joe Murray