Synchronous and metachronous malignancies of the colon and rectum in Japan with special reference to a coexisting early cancer

The authors reviewed the medical records of 1005 patients with multiple colorectal cancers (763 synchronous and 242 metachronous) to study the number and site of the tumors, their preoperative detectability, and the results of treatment. Concurrent advanced cancers were found in 35.1%, concurrent ad...

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Veröffentlicht in:Cancer 1984-11, Vol.54 (9), p.1870-1874
Hauptverfasser: Kaibara, Nobuaki, Koga, Shigemasa, Jinnai, Dennosuke
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container_end_page 1874
container_issue 9
container_start_page 1870
container_title Cancer
container_volume 54
creator Kaibara, Nobuaki
Koga, Shigemasa
Jinnai, Dennosuke
description The authors reviewed the medical records of 1005 patients with multiple colorectal cancers (763 synchronous and 242 metachronous) to study the number and site of the tumors, their preoperative detectability, and the results of treatment. Concurrent advanced cancers were found in 35.1%, concurrent advanced and early cancers in 59.0%, and concurrent early cancers in 5.9% of patients with synchronous malignancy. In 60.1% of these patients, the existence of multiple lesions was diagnosed preoperatively; coexisting early cancers were often overlooked. In patients with metachronous malignancy, early cancers were less frequent than in patients with synchronous malignancy. The cumulative 5‐year survival rate in curatively operated patients was 70.4% for synchronous malignancy and 66.5% for metachronous malignancy, similar to that for colon cancer in general.
doi_str_mv 10.1002/1097-0142(19841101)54:9<1870::AID-CNCR2820540917>3.0.CO;2-5
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source MEDLINE; Alma/SFX Local Collection
subjects Biological and medical sciences
Colonic Neoplasms - diagnosis
Colonic Neoplasms - pathology
Colonic Neoplasms - therapy
Gastroenterology. Liver. Pancreas. Abdomen
Humans
Medical sciences
Neoplasms, Multiple Primary - diagnosis
Neoplasms, Multiple Primary - therapy
Prognosis
Rectal Neoplasms - diagnosis
Rectal Neoplasms - pathology
Rectal Neoplasms - therapy
Stomach. Duodenum. Small intestine. Colon. Rectum. Anus
Tumors
title Synchronous and metachronous malignancies of the colon and rectum in Japan with special reference to a coexisting early cancer
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