lump lump
The lump of his form was so withered that I almost thought there was something missing.
(The patient was lying in bed.)

What does 'the lump of his form' mean?
His figure maybe.

Question

lump lump
The lump of his form was so withered that I almost thought there was something missing.
(The patient was lying in bed.)

What does 'the lump of his form' mean?
His figure maybe.

Answer

He was so withered that he didn't look like a human anymore: he looked like a lump.  His form was a lump.

This is not a common pattern--it is something the author created specifically for the occasion.