A rare, firm type of rectal tumour with central ulceration, associated with stenosis, difficulty passing stool, blood and mucus of the faeces, colic, meteorism, and loss of appetite.
- J. von Hochenegg:
Über Ulcus callosum recti und diesen Behandlung.
Wiener klinische Wochenschrift, 1926, 39: 522-524.
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