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In radiology, the thumbprint sign, or thumbprinting, is a radiologic sign found on a radiograph that suggests the diagnosis of either epiglottitis or intestinal ischemia.. In a lateral C-spine radiograph, the sign is caused by a thickened free edge of the epiglottis, which causes it to appear more radiopaque than normal, resembling the distal thumb.
A colorectal polyp is a polyp (fleshy growth) occurring on the lining of the colon or rectum. [1] Untreated colorectal polyps can develop into colorectal cancer. [2]Colorectal polyps are often classified by their behaviour (i.e. benign vs. malignant) or cause (e.g. as a consequence of inflammatory bowel disease).
On lateral C-spine X-ray, the thumbprint sign describes a swollen, enlarged epiglottis. [10] A normal X-ray, however, does not exclude the diagnosis. [10] An ultrasound may be helpful if specific changes are present, but its use (as of 2018) is in the early stages of study. [10] On CT imaging, the "Halloween sign" describes an epiglottis of ...
Traditional serrated adenoma seen under microscopy with H&E stain, showing serrated crypts. SPS may occur with one of two phenotypes: distal or proximal. [6] The distal phenotype may demonstrate numerous small polyps in the distal colon and rectum, whereas the proximal phenotype may be characterized by relatively fewer, but larger polyps in the proximal colon (cecum, ascending colon, etc.). [6]
Colorectal adenoma Type Risk of containing malignant cells Histopathology definition Tubular adenoma 2% at 1.5 cm [4] Over 75% of volume has tubular appearance. [5] Tubulovillous adenoma 20% to 25% [6] 25–75% villous [5] Villous adenoma 15% [7] to 40% [6] Over 75% villous [5] Sessile serrated adenoma (SSA) [8] Basal dilation of the crypts ...
Such polyps are termed "inverted hyperplastic polyps". They appear to be restricted to the sigmoid colon and rectum. The misplaced epithelium is mucin-depleted, similar to the basal one-third of the polyp. The misplacement is accompanied by the lamina propria and is continuous with the overlying polyp through a gap in the muscularis mucosae. It ...
(The Center Square) – Homeschool groups have concerns about President-elect Donald Trump’s proposed tax credit as Illinois lawmakers look at regulating the practice. Trump, in a video posted ...
Affected individuals have an increased risk of colorectal cancer, precancerous colon polyps and an increased risk of several additional cancers. About 1–2 percent of the population possess a mutated copy of the MUTYH gene, and less than 1 percent of people have the MUTYH-associated polyposis syndrome.