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hyperplastic

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SOLAR LENTIGO  A: There is an area of slightly <span class="search-highlight">hyperplastic</span> epidermis with ...
Published: 01 February 2024
SOLAR LENTIGO Figure 1-1 SOLAR LENTIGO A: There is an area of slightly hyperplastic epidermis with hyperpigmentation of sun-damaged skin. B: The slightly elongated rete ridges are associated with melanin pigment in keratinocytes. More about this image found in SOLAR LENTIGO A: There is an area of slightly hyperplastic epidermis with ...
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JUNCTIONAL SPITZ NEVUS  Small circumscribed lesion has junctional nests of ...
Published: 01 February 2024
JUNCTIONAL SPITZ NEVUS Figure 7-4 JUNCTIONAL SPITZ NEVUS Small circumscribed lesion has junctional nests of varying size and shape. Clefts are seen between the nests of melanocytes and the adjacent hyperplastic epidermis. More about this image found in JUNCTIONAL SPITZ NEVUS Small circumscribed lesion has junctional nests of ...
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SPITZOID MELANOMA MISDIAGNOSED AS SPITZ NEVUS  A: Symmetric silhouette of a...
Published: 01 February 2024
SPITZOID MELANOMA MISDIAGNOSED AS SPITZ NEVUS Figure 19-2 SPITZOID MELANOMA MISDIAGNOSED AS SPITZ NEVUS A: Symmetric silhouette of a compound pigmented spindle and epithelioid cell neoplasm in a young adult. There are clefts between junctional nests and adjacent hyperplastic epidermis. B: A few ... More about this image found in SPITZOID MELANOMA MISDIAGNOSED AS SPITZ NEVUS A: Symmetric silhouette of a...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-01
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
..., and the epidermis may be atrophic. The stratum corneum of a solar lentigo may be normal or thickened. SOLAR LENTIGO Figure 1-1 SOLAR LENTIGO A: There is an area of slightly hyperplastic epidermis with hyperpigmentation of sun-damaged skin. B: The slightly elongated rete ridges are associated with melanin...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-19
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... MELANOMA MISDIAGNOSED AS SPITZ NEVUS A: Symmetric silhouette of a compound pigmented spindle and epithelioid cell neoplasm in a young adult. There are clefts between junctional nests and adjacent hyperplastic epidermis. B: A few mitotic figures are seen at the base of the lesion. C: Metastatic melanoma...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-22
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... a intradermal tumor deposit commonly show hyperplastic elongated rete ridges turned inward to form a collarette (see fig. 22-4 ). Such collarettes, however, can also be seen in association with primary melanomas. Lymphatic tumor emboli are more likely to be found in association with a metastatic lesion than...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-07
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... JUNCTIONAL SPITZ NEVUS Small circumscribed lesion has junctional nests of varying size and shape. Clefts are seen between the nests of melanocytes and the adjacent hyperplastic epidermis. JUNCTIONAL SPITZ NEVUS Figure 7-5 JUNCTIONAL SPITZ NEVUS Nests of spindle and epithelioid cells seem to float...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-10
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... with Features of Both Blue and Spitz Nevus. Some combined melanocytic nevi display mixed features of blue and Spitz nevi. They have been referred to as BLITZ nevi ( 13 ). The lesions typically display a wedge-shaped silhouette. The epidermis is often hyperplastic, overlying a densely cellular...
Images
MALIGNANT HYPERTENSION: <span class="search-highlight">HYPERPLASTIC</span> ARTERIOSCLEROSIS  Intimal thickening w...
Published: 15 November 2023
MALIGNANT HYPERTENSION: HYPERPLASTIC ARTERIOSCLEROSIS Figure 29-19 MALIGNANT HYPERTENSION: HYPERPLASTIC ARTERIOSCLEROSIS Intimal thickening with reduplicated elastic layers (“onion skinning”) is seen on elastic staining. This change is thought secondary to longstanding hypertension that becomes a... More about this image found in MALIGNANT HYPERTENSION: HYPERPLASTIC ARTERIOSCLEROSIS Intimal thickening w...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-02
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
... against the native tissue. The development of this synovial-like lining is of little consequence, except to note that it can become hyperplastic, with micropapillations seen on histologic evaluation. Squamous metaplasia of the implant capsule occurs less frequently ( fig. 2-12 ). IMPLANT CAPSULE Figure 2...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 18
Published: 01 January 2024
10.55418/9781933477367-07
ISBN-10: 1-933477-36-9
ISBN: 978-1-933477-36-7
... hyperplastic, with cuboidal, epithelioid, or spindle cell morphology. INTRADUCTAL PAPILLOMA Figure 7-1 INTRADUCTAL PAPILLOMA A: At low power, the papillary architecture and intraductal location of this papilloma are readily appreciated. The fibrovascular cores are relatively broad. The epithelial component...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 17
Published: 15 November 2023
10.55418/9781933477299-ch29
ISBN-10: 1-933477-29-6
ISBN: 978-1-933477-29-9
... HYPERTENSIVE ARTERIOLOSCLEROSIS: KIDNEY Thickened arterioles within the kidney are the hallmark of hypertensive arteriolosclerosis, which can be evident on hematoxylin and eosin (H&E) staining (left) and periodic acid–Schiff (PAS) staining (right). MALIGNANT HYPERTENSION: HYPERPLASTIC ARTERIOSCLEROSIS...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 17
Published: 15 November 2023
10.55418/9781933477299-ch40
ISBN-10: 1-933477-29-6
ISBN: 978-1-933477-29-9
... ). Fibroblasts and more primitive mesenchymal cells are present within the matrix. The surface endothelial cells are hyperplastic and possess numerous organelles and pinocytotic vesicles. Molecular Genetic Findings. As noted above, some PFEs have mutations in exons 2-3 of KRAS. While this finding...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 16
Published: 01 August 2023
10.55418/9781933477282-01
ISBN-10: 1-933477-28-8
ISBN: 978-1-933477-28-2
... of cells showing transitional differentiation are seen in the ovarian hilar region, but are more commonly encountered in the fallopian tube, where they form Walthard nests. There may be central cyst formation within the larger of these nests. Hyperplastic mesothelial cells may be present on the ovarian...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 16
Published: 01 August 2023
10.55418/9781933477282-16
ISBN-10: 1-933477-28-8
ISBN: 978-1-933477-28-2
...-grade appendiceal mucinous neoplasm or mucinous cystadenoma with transmural mucin dissection) ( 138 ) and mostly show adherent extracellular mucin that contains sparse neoplastic cells, with or without intraepithelial growth, resembling hyperplastic or low-grade dysplastic intestinal epithelium...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 16
Published: 01 August 2023
10.55418/9781933477282-14
ISBN-10: 1-933477-28-8
ISBN: 978-1-933477-28-2
... by luteinized granulosa and theca cells. Luteinized stromal cells are seen in the stroma between the cysts. Pregnancy Luteoma Pregnancy luteoma is a hyperplastic proliferation of luteinized cells that characteristically forms a mass during pregnancy. These tumors are described in patients from 15...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 16
Published: 01 August 2023
10.55418/9781933477282-06
ISBN-10: 1-933477-28-8
ISBN: 978-1-933477-28-2
..., genotyping, and immunohistochemical profiling do not support a category of seromucinous carcinoma of the ovary . Am J Surg Pathol   2017 ; 41 : 685 - 95 . 50. Czernobilsky   B , Morris   WJ . A histologic study of ovarian endometriosis with emphasis on hyperplastic and atypical changes...
Images
VERRUCIFORM XANTHOMA  The <span class="search-highlight">hyperplastic</span> squamous proliferation shows verruci...
Published: 01 February 2023
VERRUCIFORM XANTHOMA Figure 5-6 VERRUCIFORM XANTHOMA The hyperplastic squamous proliferation shows verruciform architecture (left) and is associated with foamy histiocytic cells in the subepithelial stroma, which can be subtle and therefore best appreciated at high-power magnification (right). More about this image found in VERRUCIFORM XANTHOMA The hyperplastic squamous proliferation shows verruci...
Images
PSEUDOEPITHELIOMATOUS HYPERPLASIA  Left: There is thickening of the squamou...
Published: 01 February 2023
PSEUDOEPITHELIOMATOUS HYPERPLASIA Figure 5-4 PSEUDOEPITHELIOMATOUS HYPERPLASIA Left: There is thickening of the squamous epithelium, predominantly at the base, with irregular expansion and elongation of the rete. Right: The hyperplastic epithelium lacks koilocytosis and basal atypia. More about this image found in PSEUDOEPITHELIOMATOUS HYPERPLASIA Left: There is thickening of the squamou...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 15
Published: 01 March 2023
10.55418/9781933477275-12
ISBN-10: 1-933477-27-X
ISBN: 978-1-933477-27-5
... features of autoimmune gastritis (so-called type 2 gastric neuroendocrine tumors) are a clue to the presence of a gastrinoma. Following removal of the gastrinoma, the hyperplastic and some of the early gastrin-driven neoplastic lesions in the stomach may regress. Gross and Microscopic Findings. Pancreatic...