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Images
Published: 01 December 2024
ATYPICAL CELLS IN ADRENAL CORTICAL ADENOMA Figure 5-24 ATYPICAL CELLS IN ADRENAL CORTICAL ADENOMA This cortical adenoma exhibits focal “endocrine atypia” and lipomatous change. More about this image found in ATYPICAL CELLS IN ADRENAL CORTICAL ADENOMA This cortical adenoma exhibits ...
Images
in Physiology, Development, and Anatomy of the Adrenal Glands
> Tumors of the Adrenal Glands and Extra-Adrenal Paraganglia
Published: 01 December 2024
FAT CELL METAPLASIA Figure 1-35 FAT CELL METAPLASIA Normal adrenal cortex in an adult shows patchy areas with confluent lipid vacuoles and some individual cells resembling mature adipocytes. This has been referred to as lipomatous metaplasia. More about this image found in FAT CELL METAPLASIA Normal adrenal cortex in an adult shows patchy areas w...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 21
Published: 01 December 2024
10.55418/9781933477473-05
ISBN-10: 1-933477-47-4
ISBN: 978-1-933477-47-3
... is markedly atrophic. Fat could not be removed entirely because the atrophic gland was so friable. Involutive changes may occur, especially in large lesions, including fibrotic changes, hemorrhage, and necrosis ( fig. 5-15 ). Lipomatous and myelolipomatous changes also regularly occur, and they may...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 21
Published: 01 December 2024
10.55418/9781933477473-12
ISBN-10: 1-933477-47-4
ISBN: 978-1-933477-47-3
... frequently encountered primary fatty tumors in the adrenal gland are lipomas and cortical tumors with lipomatous change. Other rare examples include angiomyolipomas (see PEComas), liposarcomas ( 17 , 23 ), hibernomas ( 17 ), and teratomas ( 17 ). Vascular Tumors. The adrenal glands occasionally give rise...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 21
Published: 01 December 2024
10.55418/9781933477473-01
ISBN-10: 1-933477-47-4
ISBN: 978-1-933477-47-3
... cases the zona fasciculata contains small clear spaces caused by confluent lipid vacuoles, or areas of overt fat cell metaplasia (lipomatous foci) ( fig. 1-35 ), which may be accompanied by lymphocytes and/or myeloid metaplasia. Fat cell metaplasia is observed in 5 percent of adult adrenal glands...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 21
Published: 01 December 2024
10.55418/9781933477473-06
ISBN-10: 1-933477-47-4
ISBN: 978-1-933477-47-3
... associated with individual necrotic cells. Metaplastic bone formation is rarely seen. Lipomatous or myelolipomatous metaplasia can occur, but is usually more rare and focal than in adrenal cortical adenoma. Extensive myxoid changes are characteristic of the myxoid variant, but they may be focal...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 21
Published: 01 December 2024
10.55418/9781933477473-04
ISBN-10: 1-933477-47-4
ISBN: 978-1-933477-47-3
... or basophilic material or a few degenerated cortical cells. Nodules can be seen in every region of the cortex, and the degree of nodularity can vary widely from gland to gland. The nodules may be larger than 2 cm in diameter, and have areas of lipomatous, myelolipomatous, or even osseous metaplasia ( fig. 4-18...
Images
Published: 01 January 2024
MYOFIBROBLASTOMA, LIPOMATOUS VARIANT Figure 11-3 MYOFIBROBLASTOMA, LIPOMATOUS VARIANT A: Low-power view shows a mixed lipomatous and spindle cell lesion. B: High power shows the bland spindle cell component, interspersed between adipocytes. Scattered mast cells offer a clue to the correct diagno... More about this image found in MYOFIBROBLASTOMA, LIPOMATOUS VARIANT A: Low-power view shows a mixed lipom...
Images
Published: 15 November 2023
LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM: RADIOLOGIC FEATURES Figure 46-5 LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM: RADIOLOGIC FEATURES Above: T1-weighted MRI shows bilobed intense thickening of the atrial septum (yellow arrowhead). Right: Sparing of the valve of the fossa ovalis (yellow a... More about this image found in LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM: RADIOLOGIC FEATURES Above: T1...
Images
Published: 15 November 2023
LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Figure 46-6 LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Left: Prominent fatty thickening of the atrial septum is present, most notably in the posterior limbus (black asterisk). Right: Sparing of the valve of the fossa ovalis (yellow arrow) creates a du... More about this image found in LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Left: Prominent fatty thickeni...
Images
Published: 15 November 2023
LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Figure 46-7 LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM The fatty thickening fills and distends the normal contours of the septum, making it appear almost encapsulated, although no formal capsule exists. More about this image found in LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM The fatty thickening fills and...
Images
Published: 15 November 2023
LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Figure 46-8 LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Left: The lesion consists of a combination of immature (brown) fat (black arrows), mature (white) fat, and scattered atrial myocytes. Right: The immature fat may be focally prominent. More about this image found in LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM Left: The lesion consists of a...
Images
Published: 15 November 2023
LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE Figure 46-9 LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE There is prominent fatty thickening of the tricuspid valve. More about this image found in LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE There is prominent fatty th...
Images
Published: 15 November 2023
LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE Figure 46-10 LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE Left: Prominent fatty thickening obscures the normal spongiosa of the valve (elastic staining). Right: High-power view shows mature (white) adipocytes and collagen fibrils replacing the spo... More about this image found in LIPOMATOUS HAMARTOMA OF ATRIOVENTRICULAR VALVE Left: Prominent fatty thick...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 17
Published: 15 November 2023
10.55418/9781933477299-ch46
ISBN-10: 1-933477-29-6
ISBN: 978-1-933477-29-9
... cardiac myocytes. LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM: RADIOLOGIC FEATURES Figure 46-5 LIPOMATOUS HYPERTROPHY OF THE ATRIAL SEPTUM: RADIOLOGIC FEATURES Above: T1-weighted MRI shows bilobed intense thickening of the atrial septum (yellow arrowhead). Right: Sparing of the valve of the fossa...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-11
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
..., these features are better appreciated. There are many variants of myofibroblastoma, including epithelioid, cellular, myxoid, collagenized, lipomatous ( fig. 11-3 ), and palisaded ( Table 11-2 ) ( 1 , 2 , 4 ). The epithelioid variant is characterized by more polygonal or epithelioid cells arranged in single file...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 17
Published: 15 November 2023
10.55418/9781933477299-ch17
ISBN-10: 1-933477-29-6
ISBN: 978-1-933477-29-9
... Coll Cardiol 2009 ; 54 : 664 - 6 . 45. Tansey DK , Aly Z , Sheppard MN . Fat in the right ventricle of the normal heart . Histopathology 2005 ; 46 : 98 - 104 . 46. Voigt J , Agdal N. Lipomatous infiltration of the heart. An uncommon cause of sudden...
Images
Published: 01 March 2023
ANGIOLIPOMA Figure 13-12 ANGIOLIPOMA The prominent vascular component of the lipomatous neoplasm produces extensive intratumoral hemorrhage. Pancreatic tissue is seen at lower right. More about this image found in ANGIOLIPOMA The prominent vascular component of the lipomatous neoplasm pr...
Images
Published: 01 March 2023
LIPOMATOUS PSEUDOHYPERTROPHY Figure 15-43 LIPOMATOUS PSEUDOHYPERTROPHY Adipose tissue replaces pancreatic parenchyma in the head of the gland. More about this image found in LIPOMATOUS PSEUDOHYPERTROPHY Adipose tissue replaces pancreatic parenchyma...
Images
Published: 01 February 2023
ATYPICAL LIPOMATOUS TUMOR Figure 5-79 ATYPICAL LIPOMATOUS TUMOR Fibrous septa separate lobules of mature adipocytes, including atypical forms with large hyperchromatic nuclei. More about this image found in ATYPICAL LIPOMATOUS TUMOR Fibrous septa separate lobules of mature adipocy...
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