Quotation from: Manual of Surgery

Written by: Alexander Miles and Alexis Thomson


_Secretory Glands._--The regeneration of secretory glands is usually
incomplete, cicatricial tissue taking the place of the glandular
substance which has been destroyed. In wounds of the liver, for example,
the gap is filled by fibrous tissue, but towards the periphery of the
wound the liver cells proliferate and a certain amount of regeneration
takes place. In the kidney also, repair mainly takes place by
cicatricial tissue, and although a few collecting tubules may be
reformed, no regeneration of secreting tissue takes place. After the
operation of decapsulation of the kidney a new capsule is formed, and
during the process young blood vessels permeate the superficial parts
of the kidney and temporarily increase its blood supply, but in the
consolidation of the new fibrous tissue these vessels are ultimately
obliterated. This does not prove that the operation is useless, as the
temporary improvement of the circulation in the kidney may serve to tide
the patient over a critical period of renal insufficiency.

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