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1.

Colorectal Cancer

The colon and rectum are part of the large intestine. Colorectal cancer occurs when tumors form in the lining of the large intestine. It is common in both men and women. The risk of developing colorectal cancer rises after age 50. You're also more likely to get it if you have colorectal polyps, a family history of colorectal cancer, ulcerative colitis or Crohn's disease, eat a diet high in fat, or smoke. Symptoms of colorectal cancer include. -Diarrhea or constipation. -A feeling that your bowel does not empty completely. -Blood (either bright red or very dark) in your stool. -Stools that are narrower than usual. -Frequent gas pains or cramps, or feeling full or bloated. -Weight loss with no known reason. -Fatigue. -Nausea or vomiting. Because you may not have symptoms at first, it's important to have screening tests. Everyone over 50 should get screened. Tests include colonoscopy and tests for blood in the stool. Treatments for colorectal cancer include surgery, chemotherapy, radiation, or a combination. Surgery can usually cure it when it is found early. NIH: National Cancer Institute.  [from MedlinePlus]

MedGen UID:
287122
Concept ID:
C1527249
Neoplastic Process
2.

Colorectal cancer

MedGen UID:
945535
Concept ID:
CN262507
Finding
3.

Colorectal cancer.

MedGen UID:
910619
Concept ID:
CN240758
Disease or Syndrome
4.

Colorectal cancer

MedGen UID:
808161
Concept ID:
CN221574
Disease or Syndrome
5.

Independent

MedGen UID:
721426
Concept ID:
C1299583
Finding
6.

Familial colorectal cancer

Colorectal cancer is a heterogeneous disease that is common in both men and women. In addition to lifestyle and environmental risk factors, gene defects can contribute to an inherited predisposition to CRC. CRC is caused by changes in different molecular pathogenic pathways, such as chromosomal instability, CpG island methylator phenotype, and microsatellite instability. Chromosome instability is the most common alteration and is present in almost 85% of all cases (review by Schweiger et al., 2013). Genetic Heterogeneity of Colorectal Cancer Mutations in a single gene result in a marked predisposition to colorectal cancer in 2 distinct syndromes: familial adenomatous polyposis (FAP; 175100) and hereditary nonpolyposis colorectal cancer (HNPCC; see 120435). FAP is caused by mutations in the APC gene (611731), whereas HNPCC is caused by mutations in several genes, including MSH2 (609309), MLH1 (120436), PMS1 (600258), PMS2 (600259), MSH6 (600678), TGFBR2 (190182), and MLH3 (604395). Epigenetic silencing of MSH2 results in a form of HNPCC (see HNPCC8, 613244). Other colorectal cancer syndromes include autosomal recessive adenomatous polyposis (608456), which is caused by mutations in the MUTYH gene (604933), and oligodontia-colorectal cancer syndrome (608615), which is caused by mutations in the AXIN2 gene (604025). The CHEK2 gene (604373) has been implicated in susceptibility to colorectal cancer in Finnish patients. A germline mutation in the PLA2G2A gene (172411) was identified in a patient with colorectal cancer. Germline susceptibility loci for colorectal cancer have also been identified. CRCS1 (608812) is conferred by mutation in the GALNT12 gene (610290) on chromosome 9q22; CRCS2 (611469) maps to chromosome 8q24; CRCS3 (612229) is conferred by variation in the SMAD7 gene (602932) on chromosome 18; CRCS4 (601228) is conferred by variation on 15q that causes increased and ectopic expression of the GREM1 gene (603054); CRCS5 (612230) maps to chromosome 10p14; CRCS6 (612231) maps to chromosome 8q23; CRCS7 (612232) maps to chromosome 11q23; CRCS8 (612589) maps to chromosome 14q22; CRCS9 (612590) maps to 16q22; CRCS10 (612591) is conferred by mutation in the POLD1 gene (174761) on chromosome 19q13; CRCS11 (612592) maps to chromosome 20p12; and CRCS12 (615083) is conferred by mutation in the POLE gene (174762) on chromosome 12q24. Somatic mutations in many different genes, including KRAS (190070), PIK3CA (171834), BRAF (164757), CTNNB1 (116806), FGFR3 (134934), AXIN2 (604025), AKT1 (164730), MCC (159350), MYH11 (160745), PARK2 (602544), and RNF43 (612482), have been identified in colorectal cancer. [from OMIM]

MedGen UID:
430218
Concept ID:
CN029768
Disease or Syndrome
7.

Negative Lymph Node

A clinical finding that a lymph node is free from cancer spread. [from NCI]

MedGen UID:
151825
Concept ID:
C0678034
Finding
8.

Carcinoma of colon

Lynch syndrome, caused by a germline pathogenic variant in a mismatch repair gene and associated with tumors exhibiting microsatellite instability (MSI), is characterized by an increased risk for colon cancer and cancers of the endometrium, ovary, stomach, small intestine, hepatobiliary tract, urinary tract, brain, and skin. In individuals with Lynch syndrome the following life time risks for cancer are seen: 52%-82% for colorectal cancer (mean age at diagnosis 44-61 years); 25%-60% for endometrial cancer in women (mean age at diagnosis 48-62 years); 6% to 13% for gastric cancer (mean age at diagnosis 56 years); and 4%-12% for ovarian cancer (mean age at diagnosis 42.5 years; approximately 30% are diagnosed before age 40 years). The risk for other Lynch syndrome-related cancers is lower, though substantially increased over general population rates. [from GeneReviews]

MedGen UID:
147065
Concept ID:
C0699790
Neoplastic Process
9.

Negative

An absence finding of the specified component / analyte, organism or clinical sign based on the established threshold of the performed test or procedure. [Note: Negative does not necessarily imply the complete absence of the specified item.].  [from HL7]

MedGen UID:
61377
Concept ID:
C0205160
Finding
10.

Microsatellite Instability

A change that occurs in the DNA of certain cells (such as tumor cells) in which the number of repeats of microsatellites (short, repeated sequences of DNA) is different than the number of repeats that was in the DNA when it was inherited. The cause of microsatellite instability may be a defect in the ability to repair mistakes made when DNA is copied in the cell. [from NCI_NCI-GLOSS]

MedGen UID:
182529
Concept ID:
C0920269
Pathologic Function
11.

Methylation

The covalent chemical or biochemical addition of a methyl group(s) to a compound. (NCI) [from NCI]

MedGen UID:
44400
Concept ID:
C0025723
Molecular Function
12.

Instability

MedGen UID:
731956
Concept ID:
C1444783
Finding
13.

Improved

Condition changed and/or recovered [from CCC]

MedGen UID:
512204
Concept ID:
C0184511
Finding
14.

Positive

A presence finding of the specified component / analyte, organism or clinical sign based on the established threshold of the performed test or procedure.  [from HL7]

MedGen UID:
254858
Concept ID:
C1446409
Finding
15.

Disease regression

Return to a former state; a subsidence of the symptoms of a disease process; in cancer, a decrease in the size of a tumor or in the extent of cancer in the body. [from NCI]

MedGen UID:
195771
Concept ID:
C0684320
Pathologic Function
16.

Examined for

Having been subjected to inspection or evaluation. [from NCI]

MedGen UID:
83047
Concept ID:
C0332128
Finding
17.

Colon cancer

A primary or metastatic malignant neoplasm that affects the colon. Representative examples include carcinoma, lymphoma, and sarcoma. [from NCI]

MedGen UID:
2839
Concept ID:
C0007102
Neoplastic Process
18.

Intestinal Neoplasm

Tumors or cancer of the INTESTINES. [from MeSH]

MedGen UID:
43932
Concept ID:
C0021841
Neoplastic Process
19.

Disorder of rectum

The rectum is the lower part of your large intestine where your body stores stool. Problems with rectum are common. They include hemorrhoids, abscesses, incontinence and cancer. Many people are embarrassed to talk about rectal troubles. But seeing your doctor about problems in this area is important. This is especially true if you have pain or bleeding. Treatments vary depending on the particular problem. . NIH: National Institute of Diabetes and Digestive and Kidney Diseases.  [from MedlinePlus]

MedGen UID:
19701
Concept ID:
C0034882
Disease or Syndrome
20.

Disorder of gastrointestinal tract

A non-neoplastic or neoplastic disorder that affects the gastrointestinal tract, anus, liver, biliary system, and pancreas. [from NCI]

MedGen UID:
8970
Concept ID:
C0017178
Disease or Syndrome
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