A system of surgery . yetimpossible to state why a periosteal sarcoma of the femur shouldbe one of the most deadly tumours known, yet very good reasonscan be adduced to explain the rapidly fatal course pursued by cancerof the uterus and epithelioma of the tongue. The infiltrating tendency of many malignant tumours explains,in some cases, the rapidity with which they destroy life. Take asan example the specimen shown in Fig. 95. It was removed froma man 33 years of age, who died from cancer of the rectum; nodisease was suspected to exist in the patient six months before 446 TUMOURS. his death.
A system of surgery . yetimpossible to state why a periosteal sarcoma of the femur shouldbe one of the most deadly tumours known, yet very good reasonscan be adduced to explain the rapidly fatal course pursued by cancerof the uterus and epithelioma of the tongue. The infiltrating tendency of many malignant tumours explains,in some cases, the rapidity with which they destroy life. Take asan example the specimen shown in Fig. 95. It was removed froma man 33 years of age, who died from cancer of the rectum; nodisease was suspected to exist in the patient six months before 446 TUMOURS. his death. In this case the disease had not confined itself to therectum, but had crept down the bowel and infiltrated the skinaround the anus; it had also made its way through the muscu-lar coat of the bowel, and had involved the sacrum and coccyx,causing necrosis of the first coccygeal vertebra. The exuberantgrowth in the rectum had so obstructed the lumen of the bowel,that colotomy was urgently needed six weeks before the man. Fig. 96.—Chondroma of the Mesethmoid (Perpendicular Plate) invading the Cranial Fossaand Distorting the Bones. (Museum, St. Georges Hospital.) died. In addition, the disease had infiltrated the prostate, so thatbutton-like knobs of the tumour obstructed the urethra and causedretention of urine, necessitating the regular use of a catheter. There were no secondary deposits; death in this case was largelydue to the interference with vital organs, in consequence of theinfiltrating properties of the tumour. The immediate cause ofdeath was uraemia, and each renal pelvis was dilated and filled withpurulent material. The rapid course of events in this case wasdue not only to the essential malignancy of the tumour, but also tothe implication of the bladder and ureters, and the consequent renaltrouble. The progress was assisted by progressive ansemia, caused INNOGENGY AND MALIGNANCY. 447 by small losses of blood frequently repeated, and also by the per-sistent drainage o
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