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Images
Published: 01 September 2024
ENTEROVIRUS MYOCARDITIS Figure 7-2 ENTEROVIRUS MYOCARDITIS A scant lymphocyte infiltrate and myocyte injury (A) are seen. Lymphocytic infiltration can be patchy (C), making detection on endomyocardial biopsy difficult. Confirmatory enterovirus immunohistochemistry (B) demonstrates red cytoplasmic... More about this image found in ENTEROVIRUS MYOCARDITIS A scant lymphocyte infiltrate and myocyte injury (...
Images
Published: 01 September 2024
INFLUENZA B VIRUS MYOCARDITIS Figure 7-3 INFLUENZA B VIRUS MYOCARDITIS At low (A) and high power (B), a discrete perivascular lymphocyte infiltrate and associated myocyte injury are seen. Immunohistochemical staining did not demonstrate influenza B virus in the myocardium, although it was demonst... More about this image found in INFLUENZA B VIRUS MYOCARDITIS At low (A) and high power (B), a discrete pe...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-07
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
...VIRAL MYOCARDITIS General Considerations, Including Etiology and Synonyms Myocarditis, inflammation of the heart muscle frequently associated with myocyte injury and cardiac dysfunction, can have various causes, including viral infection. An integral part of the definitive diagnosis...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-29
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
... evidence of myocarditis, characterized by edema, myocyte necrosis, an abundant and predominantly mononuclear inflammatory infiltrate, and scattered clusters of amastigotes ( 8 ). Pericardial effusion is frequent. Trypanosoma amastigotes are differentiated histologically from other parasitic...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-14
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
... ). There are also multiple foci of vasculitis in the gastrointestinal tract, pancreas, and gallbladder. The heart shows patchy lymphocytic infiltrates without associated myocyte necrosis. The central nervous system demonstrates a meningoencephalitis with glial nodules scattered in the parenchyma, perivascular...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-04
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
... particles are present in surface (especially ciliated) and glandular epithelia of the trachea and larger bronchi ( fig. 4-4 ). The virus is rarely observed in cells in the alveolar spaces. Myocarditis (characterized by focal myocardial accumulations of lymphocytes with associated myocyte necrosis...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-09
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
... (with myocyte destruction) are also no longer thought to be directly induced by HIV. There is debate over the pathogenesis of the evident high incidence of cardiovascular disease (including ischemic heart disease) in people with HIV, particularly in high-income countries. The extent to which arteriosclerotic...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-13
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
.... In advanced cases, there may also be brain ring hemorrhages and microthrombi, as well as degeneration of cardiac and skeletal muscle myocytes. In the GIT, the histologic differential diagnosis of typhoid fever includes Whipple disease, mycobacterial (especially Mycobacterium avium-intracellulare...
Images
Published: 15 November 2023
HYPERTENSIVE HEART DISEASE: MYOCYTE HYPERTROPHY Figure 20-3 HYPERTENSIVE HEART DISEASE: MYOCYTE HYPERTROPHY Myocyte hypertrophy in hypertensive heart disease. More about this image found in HYPERTENSIVE HEART DISEASE: MYOCYTE HYPERTROPHY Myocyte hypertrophy in hyp...
Images
Published: 15 November 2023
DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Figure 14-9 DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY The myocytes typically display karyomegaly and are occasionally increased in diameter. More about this image found in DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY The myocytes typically display...
Images
Published: 15 November 2023
HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE DISARRAY Figure 15-13 HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE DISARRAY The cardiac myocytes are arranged in a nonparallel arrangement. More about this image found in HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE DISARRAY The cardiac myocytes are arr...
Images
Published: 15 November 2023
MYOCYTE DISARRAY: TYPES Figure 15-14 MYOCYTE DISARRAY: TYPES Left: Storiform-type disarray, with myocytes vaguely encircling one another, usually centered around collagen. Right: Herringbone-type disarray, with myocytes arranged in nonparallel intersecting fascicles. More about this image found in MYOCYTE DISARRAY: TYPES Left: Storiform-type disarray, with myocytes vague...
Images
Published: 15 November 2023
GIANT CELL MYOCARDITIS: EXTENSIVE MYOCYTE INJURY Figure 22-23 GIANT CELL MYOCARDITIS: EXTENSIVE MYOCYTE INJURY There is extensive myocyte injury in association with the florid inflammatory infiltrate. More about this image found in GIANT CELL MYOCARDITIS: EXTENSIVE MYOCYTE INJURY There is extensive myocyt...
Images
Published: 15 November 2023
MYOCYTE INJURY Figure 24-2 MYOCYTE INJURY Inflammation envelopes the myocytes, with associated scalloping of the sarcoplasmic membranes (black arrows). Fragments of myocytes are seen within the infiltrate. More about this image found in MYOCYTE INJURY Inflammation envelopes the myocytes, with associated scallo...
Images
Published: 15 November 2023
HAMARTOMA OF MATURE CARDIAC MYOCYTES Figure 45-2 HAMARTOMA OF MATURE CARDIAC MYOCYTES Enlarged, disorganized myocytes with interspersed collagen form the bulk of the tumor as seen with hematoxylin and eosin (H&E) stain (left) and Masson trichrome stain (right). More about this image found in HAMARTOMA OF MATURE CARDIAC MYOCYTES Enlarged, disorganized myocytes with ...
Images
Published: 15 November 2023
MYOCYTE ORIENTATION Figure 3-4 MYOCYTE ORIENTATION A: In the gross specimen, clusters of mid-mural myocytes are arranged longitudinally, in contrast to subepicardial and subendocardial myocardium (the three regions are indicated with double-headed arrows). B–D: High-power views (taken at the sam... More about this image found in MYOCYTE ORIENTATION A: In the gross specimen, clusters of mid-mural myocyt...
Images
Published: 15 November 2023
MYOCYTE DISARRAY Figure 3-5 MYOCYTE DISARRAY The myocytes are oriented in a haphazard fashion. More about this image found in MYOCYTE DISARRAY The myocytes are oriented in a haphazard fashion.
Images
Published: 15 November 2023
DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Figure 14-10 DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Despite the presence of hypertrophy evidenced by karyomegaly, the myocytes in DCM are often of normal (or small) diameter because of the chamber dilatation and stretching. Dark and enlarged nuclei... More about this image found in DILATED CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Despite the presence of hypert...
Images
Published: 15 November 2023
HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Figure 15-10 HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Normal myocardium (left) compared with marked myocyte hypertrophy with increased diameter of myocytes, increased nuclear size (karyomegaly), and trinucleate forms (right). More about this image found in HYPERTROPHIC CARDIOMYOPATHY: MYOCYTE HYPERTROPHY Normal myocardium (left) ...
Images
Published: 15 November 2023
STRESS CARDIOMYOPATHY Figure 18-6 STRESS CARDIOMYOPATHY Contraction bands and marked myocyte attenuation with loss of cross striations. There is no inflammation. More about this image found in STRESS CARDIOMYOPATHY Contraction bands and marked myocyte attenuation wit...
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