Histopathology of lichen planus. Black solid arrow showing a saw tooth


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Conversely, the lack of association of the radiologic findings of "sawtooth" appearance of mucosa and pneumatosis intestinalis is likely the result of there being a low incidence in this cohort. We found this somewhat surprising, given that when pneumatosis intestinalis or "sawtooth" appearance is present on imaging in a HSCR patient.


Histopathology of lichen planus. Black solid arrow showing a saw tooth

Saw-tooth cardiomyopathy has a characteristic appearance in CMR and/or echocardiography, which is distinct from LVNC. Natural history is unclear, as are potential complications, but conduction abnormalities are described in previously reported cases. The pathophysiology is unknown, but family screening and genetic analyses may be reasonable.


(A) Hyperkeratosis and irregular acanthosis with a sawtooth appearance

The sacrum is recognizable as a horizontal hyperechoic curvilinear structure, and the L5 lamina has the typical "sawtooth" appearance. The structures of the vertebral canal are visible through the intervening gap. A distinguishing feature of the L5 lamina is its shorter superior-inferior width compared with the other lumbar vertebrae.


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Barium enema demonstrates a reduced caliber rectum and sigmoid (the rectum is smaller than the descending colon) with a saw-tooth appearance to the wall. A transition point is seen at the junction between sigmoid and descending colon. 3 case questions available Annotated post evacuation film Fluoroscopy


Histopathology of lichen planus. Black solid arrow showing a saw tooth

Saw tooth cardiomyopathy is an unusual and rare type of left ventricular dysplasia that is characterized by multiple projections of compacted myocardium that makes the appearance of 'saw tooth' in noninvasive imaging.


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Understand the concepts behind particular appearance and the derivation of the radiology sign - so that you never have to mug up


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The gull-wing appearance , also known as seagull erosions or sawtooth appearance , is classically seen in erosive osteoarthritis, typically on posteroanterior radiographs of the hands, although has also been reported in psoriatic and rheumatoid arthritis.


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Saw-tooth cardiomyopathy (STC) is a rare form of left ventricular (LV) dysplasia that may not be represented in the literature because it is underdiagnosed. Cardiac computed tomography is a valuable non-invasive study for the diagnosis of STC due to its capacity to rule out coronary lesions and identify this type of LV dysplasia.


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Serrated architecture with a sawtooth appearance, with serrations generally limited to the upper half of the crypts Mild nuclear enlargement, stratification and hyperchromasia, limited to the crypt bases No dilated, branched or horizontally spreading crypts No evidence of conventional dysplasia, e.g. as is seen in colorectal adenomas


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Contrast enema with water soluble iodinated contrast demonstrated a transition zone in the distal descending colon with narrowed sigmoid and distal descending colon, "saw tooth" appearance of sigmoid colon and rounding of the flexures ( Fig. 2 a-c).


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Saw tooth appearance of myocardium in basal inferolateral and basal to mid lateral segments was also seen. (Figures 2, 3, and 4) Figure 2. Open in figure viewer PowerPoint. Long axis view of left ventricle, showing distinct projections of myocardium. Figure 3.


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In children with OSA, the oximetry may show a characteristic sawtooth pattern of repeated cyclical desaturation during rapid eye movement (REM) sleep (see Figure 4) [3]. Central sleep apnea is.


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Sawtooth pattern on ECG Last reviewed dd mmm yyyy. Last edited dd mmm yyyy Authoring team These include: if the P waves are about 300 per minute, and there is a 3:1 block, then the ECG will have a characteristic saw-tooth appearance


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DOI: 10.1007/s11325-016-1441-x Abstract Background: We retrospectively assessed the predictive value of the spirometric sawtooth sign in terms of the odds ratio (OR) of association with a diagnosis of OSA compared to those without the sign. Methods:


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Scanning power view of lichen planus shows a lichenoid reaction pattern (Figure 1) characterised by the combination of degeneration of the basal layer of the epidermis and a band like lymphocytic infiltrate obscuring the dermoepidermal junction. There is irregular epidermal hyperplasia forming a characteristic saw-tooth appearance with wedge.


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"Saw-tooth" pattern of vertical saccades in our PSP patients. A Patient 1 shows hypometric vertical saccades forming a staircase pattern. These saccades were associated with alternating horizontal saccades, thus giving rise to a "saw-tooth" appearance, especially during downward saccades.