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Items: 8

1.

Familial adenomatous polyposis

MedGen UID:
910615
Concept ID:
CN240755
Disease or Syndrome
2.

Familial adenomatous polyposis 1

APC-associated polyposis conditions include: familial adenomatous polyposis (FAP), attenuated FAP, and gastric adenocarcinoma and proximal polyposis of the stomach (GAPPS). FAP is a colon cancer predisposition syndrome in which hundreds to thousands of adenomatous colonic polyps develop, beginning, on average, at age 16 years (range 7-36 years). By age 35 years, 95% of individuals with FAP have polyps; without colectomy, colon cancer is inevitable. The mean age of colon cancer diagnosis in untreated individuals is 39 years (range 34-43 years). Extracolonic manifestations are variably present and include: polyps of the gastric fundus and duodenum, osteomas, dental anomalies, congenital hypertrophy of the retinal pigment epithelium (CHRPE), soft tissue tumors, desmoid tumors, and associated cancers. Attenuated FAP is characterized by multiple colonic polyps (average of 30), more proximally located polyps, and a diagnosis of colon cancer at a later age than in FAP. Certain extracolonic manifestations, such as gastric and duodenal polyps or cancers, are variably present in attenuated FAP; risk management may be substantially different between FAP and attenuated FAP. GAPPS is characterized by gastric fundic gland polyposis, increased risk of gastric cancer, and limited colonic involvement in most individuals reported. [from GeneReviews]

MedGen UID:
398651
Concept ID:
C2713442
Disease or Syndrome
3.

Thoracomelic dysplasia

MedGen UID:
336441
Concept ID:
C1848863
Disease or Syndrome
4.

Polyposis

The development of numerous polyps (growths that protrude from a mucous membrane). [from NCI_NCI-GLOSS]

MedGen UID:
137722
Concept ID:
C0334108
Neoplastic Process
5.

Severe dysplasia

A morphologic finding indicating the presence of severe cellular atypia associated with severe architectural changes in a tissue sample. [from NCI]

MedGen UID:
137715
Concept ID:
C0334048
Cell or Molecular Dysfunction
6.

Severe

Having a high degree of severity. For quantitative traits, a deviation of between four and five standard deviations from the appropriate population mean. [from HPO]

MedGen UID:
104640
Concept ID:
C0205082
Qualitative Concept
7.

Dysplasia

Cells that look abnormal under a microscope but are not cancer. [from NCI]

MedGen UID:
87191
Concept ID:
C0334044
Neoplastic Process; Pathologic Function
8.

Familial multiple polyposis syndrome

Familial adenomatous polyposis (FAP) is an inherited disorder characterized by cancer of the large intestine (colon) and rectum. People with the classic type of familial adenomatous polyposis may begin to develop multiple noncancerous (benign) growths (polyps) in the colon as early as their teenage years. Unless the colon is removed, these polyps will become malignant (cancerous). The average age at which an individual develops colon cancer in classic familial adenomatous polyposis is 39 years. Some people have a variant of the disorder, called attenuated familial adenomatous polyposis, in which polyp growth is delayed. The average age of colorectal cancer onset for attenuated familial adenomatous polyposis is 55 years.In people with classic familial adenomatous polyposis, the number of polyps increases with age, and hundreds to thousands of polyps can develop in the colon. Also of particular significance are noncancerous growths called desmoid tumors. These fibrous tumors usually occur in the tissue covering the intestines and may be provoked by surgery to remove the colon. Desmoid tumors tend to recur after they are surgically removed. In both classic familial adenomatous polyposis and its attenuated variant, benign and malignant tumors are sometimes found in other places in the body, including the duodenum (a section of the small intestine), stomach, bones, skin, and other tissues. People who have colon polyps as well as growths outside the colon are sometimes described as having Gardner syndrome.A milder type of familial adenomatous polyposis, called autosomal recessive familial adenomatous polyposis, has also been identified. People with the autosomal recessive type of this disorder have fewer polyps than those with the classic type. Fewer than 100 polyps typically develop, rather than hundreds or thousands. The autosomal recessive type of this disorder is caused by mutations in a different gene than the classic and attenuated types of familial adenomatous polyposis.
[from GHR]

MedGen UID:
46010
Concept ID:
C0032580
Neoplastic Process
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