From 1/1998 to 12/1999, 646 patients underwent colorectoscopy, included 321 men (49.6%) and 325 women (50.4%). Out of these patients, 614 were endoscopied up to caecum. 150 patients with colorectal and anal tumors were further studied by histopathology to confirm diagnosis. Main findings: Tumors in colon and sigmal colon have high rate: polyp 38.81%, cancer 40.0%. Rate of cancerous polyp was higher in patients who have more than one polyp. Hyper-proliferative polyp had high rate of 53.41%, while rate of adenoma polyp was 39.77%. These cases should be monitored periodically after polyp removal because of high potential malignance. Most of malignant tumors were adenocarcinomas, occupied 89.71%. Other cancers were uncommon
Colorectal Neoplasms ; diagnosis

Chyloperitoneum, also called chylous ascites, is a rarely reported complication of abdominal surgery. In most cases, the diagnosis and treatment is not difficult. The characteristic milky colored odorless fluid is easily detected by drainage or aspiration. With the help of diagnostic radiology and laboratory tests, it has become easier to detect the chyloperitoneum. Chyloperitoneum subsides spontaneously or responds well to medical treatment. Death from chyloperitoneum is extremely rare. However, 3 cases of medically intractable chyloperitoneum were encountered at our hospital after curative surgery for gastrointestinal malignancies (two colorectal cancers and one gastric cancer). Herein, the authors report these case and discuss their treatments.
Chylous Ascites* ; Colorectal Neoplasms ; Diagnosis ; Drainage

BACKGROUND/AIMS: Magnifying colonoscopy was developed for detailed examination of the surface of colorectal neoplastic lesions. While magnifying colonoscopy is useful for differentiating neoplastic lesions from nonneoplastic ones, for evaluating early colorectal cancers, it still has limits in practice. This study was designed to clarify the usefulness and the limits of magnifying colonoscopy. METHODS: Three hundred and fifty-two lesions, which were observed using magnifying colonoscopy from July to August 1999 and whose histologies were proven, were analyzed according to their pit patterns. The pit patterns are I, normal round pits; II, large starry-shaped pits; IIIs, small round pits; IIIL, large round or rod-shaped pits; IV, branched or gyrus-like pits; and V, irregularly shaped or nonstructural pits. In cases where a pit pattern was hard to read, the pattern was classified as 'D'. RESULTS: The dominant pit pattern for protruded lesions was IIIL, accounting for 44.6%. In diminutive lesions (< or =5 mm), II and IIIL were equally common, 40% of the total for those lesions, respectively. In medium-sized lesions (from 6 to 10 mm), IIIL was the major pit pattern, 45.6% of the total for that type of lesion. In lesions larger than 10 mm, IIIL and IV were the most common pit patterns, each accounting for 26.7% of the total. The overall accuracy ratio of pit pattern diagnoses was 79.5%. The frequency of difficult pit patterns to read was 6.3%. Among them, 77.3% were due to difficulty in interpreting the pit patterns, and 22.7% were due to an inability to clarify the pit pattern because of poor staining. Ninety-one percent of the difficult cases to read involved diminutive lesions, and 86% of those difficult cases involved tubular adenomas. CONCLUSIONS: The 80% accuracy rate for pit pattern diagnosis suggests that magnifying colonoscopy is probably useful, but problems, such as poor staining due to mucus and difficulty with interpretation, still exist.
Adenoma ; Colonoscopy* ; Colorectal Neoplasms ; Diagnosis ; Mucus

In the past 20 years, researches regarding colorectal cancer have experienced unprecedented boom in China. However, a seris problems have been exposed, including a rapid increase in morbility, the geographical limitations of tumor screening, nonstandard diagnosis and treatment, very limited mechanism researches, and lack of randomized controlled clinical trials with Chinese characteristics. This article puts forward some main emphases of the current work, based on the above problems and challenges, in order to improve the overall level of the diagnosis and treatment of colorectal cancer in China.
China ; Colorectal Neoplasms ; diagnosis ; therapy ; Humans

Colorectal Neoplasms ; diagnosis ; metabolism ; Humans ; Metabolomics

Patients with pulmonary metastasis from colorectal cancer have been considered to be associated with poor prognosis. It is a problem to improve survival for patients who suffer pulmonary metastasis from colorectal cancer by analyzing the prognosis of patients who underwent pulmonary surgery or not and then choose the right treatment regimen. The identification of prognostic factors is particularly important in colorectal cancer patients with pulmonary metastasis.
Colorectal Neoplasms ; diagnosis ; therapy ; Humans ; Lung Neoplasms ; diagnosis ; therapy ; Prognosis

The incidence of colorectal cancer is rising year by year, thus screening of neoplastic colorectal polyps is very important for the prevention and treatment of colorectal cancer. In recent years, endoscopic techniques have advanced dramatically, such as high definition endoscopy, magnified endoscopy, conventional or virtual chromoendoscopy. Some of these technologies not only can improve the adenoma detection rate, but also may help to enable real-time endoscopic diagnosis and thereby guide decisions about endoscopic resection. The second generation colon capsule endoscopy provides a new and relative reliable noninvasive tool for colorectal diseases screening and diagnosis. This article aims to provide a comprehensive review of advanced imaging techniques available for the detection and differentiation of colorectal polyps.
Adenoma ; diagnosis ; Colonoscopy ; Colorectal Neoplasms ; diagnosis ; Humans ; Polyps ; diagnosis

No abstract available.
Adenoma/*diagnosis ; Colorectal Neoplasms/*diagnosis ; Female ; Humans ; Male ; *Professional Competence

Multiple primary colorectal carcinomas are not rare and occur more often than what can be ascribed to chance, but the frequencies on record vary. The tumors are usually classified as synchronous if they are present at the same time. It is often difficult to detect all these multiple lesions preoperatively:a correct diagnosis is frequently obtained only upon examination of the resected specimen. Triple synchronous primary colon cancer is an exceedingly rare disease. Despite of its rarity, multiple colon cancers should be investigated in the patients in whom clinical or laboratory evidence of colon cancer is suspected. Recently, we experienced one case of triple synchronous primary colon cancer diagnosed by colonoscopy before operation and report here with the review of the literature.
Colon* ; Colonic Neoplasms* ; Colonoscopy* ; Colorectal Neoplasms ; Diagnosis ; Humans ; Rare Diseases

Hereditary nonpolyposis colorectal cancer(HNPCC) is an autosomal dominantly inherited disease associated with a marked increase in cancer susceptibility, especially cancer of the colorectum. The frequency of HNPCC in the general population is yet to be determined, but HNPCC may account for as much as 2% to 5% of colorectal cancer, Colorectal cancer in HNPCC differs from sporadic colorectal cancer by an early age of cancer onset, proximal predominance of colorectal cancer, an excess of synchronous and metachronous colorectal cancer, and excess extra-colonic cancers. We have found 5 HNPCC families since 1992 when we reported first HNPCC family (KHU-Hl) In order to register the patients of HNPCC and to review the clinicopathologic feature and appropriate management, we have analysed 5 HNPCC families. Five HNPCC families included 16 colorectal cancer patients(14 males and 2 females). The average age of first diagnosis was 39. Among 16 patients, 8 patient were operated at the KyungHee University hospital and their operative and pathologic records were available. Two synchronous and seven metachronous cancers were founded, so that eight patients had 15 colorectal cancer lesions. Ten cancers were located proximal to splenic flexure and five were distal. Partial resection of colon was performed in seven cases except one when the first diagnosis was made and recurrence was founded in 5 patients. Recurrence was treated by total colectomy in 3 cases and subtotal colectomy in two. In conclusion, we re-confirmed that HNPCC patient should be treated by no less than a subtotal colectomy because of high multiplicity and high recurrence rate of partial resection.
Colectomy ; Colon ; Colon, Transverse ; Colorectal Neoplasms ; Colorectal Neoplasms, Hereditary Nonpolyposis* ; Diagnosis ; Humans ; Male ; Recurrence