One of the mysteries of the English language finally explained.
The formation of a pouch or pouch-like cavity; specifically an operative technique for draining a cyst or other cavity that cannot be excised, in which the cyst is opened and emptied, and its edges then sutured to the skin incision, forming a pouch that allows continued external drainage.
Late 19th century; earliest use found in The New Sydenham Society's Lexicon of Medicine and the Allied Sciences. From marsupial + -ization.
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