Grossly unchanged means that the subject in question did not change on a scale that could be noticed with the naked eye.
L3-L4 refers to the location of the spinal stenosis (narrowing of the spinal canal). The problem is found between the third and fourth vertebrae. Grossly unchanged means it appears the same to the naked eye (albeit on imaging studies) as the last time they looked.
pancreas grossly normal
Grossly tender means it obviously hurts when touched.
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Grossly benign means that to the naked eye, it does not appear dangerous.
Grossly unremarkable means there is nothing interesting to talk about, its normal.
I think you read the result incorrectly. "Grossly remarkable" doesn't make sense. "Grossly unremarkable" means there was no obvious abnormality.
Good
unchanged
Grossly normal is indicative of an unchanged state, whether referring to something "normal" in the usual sense of the word, or to a recognized medical condition that does not warrant intervention at this particular time.
in an obvious and unacceptable manner. Can be in a disgusting and coarse manner
Definition of grossly homogenous thyroid gland