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Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 20
Published: 01 September 2024
10.55418/9781933477435-15
ISBN-10: 1-933477-43-1
ISBN: 978-1-933477-43-5
..., there is a decrease in the number of basal layer melanocytes. In comparison to syphilis, these treponematoses show minimal endothelial cell proliferation, without the obliterative endarteritis that is so typical of syphilis. Tertiary lesions demonstrate the presence of gummas, which are granulomas with central...
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
...Combined melanocytic nevi are benign melanocytic proliferations that display two (or more) histopathologic nevus phenotypes within the same clinical lesion. Their relevance lies in the fact that they may both clinically and histopathologically be confused with melanoma. In some combined...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-02
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
...Congenital melanocytic nevus (CMN) is a melanocytic nevus that is present at birth ( Table 2-1 ) ( 1 ). Nevi developing or becoming clinically apparent within the first 2 years of life share similar histopathologic features, and are called tardive CMN or congenital-like...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-03
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
...Acquired melanocytic nevi are benign melanocytic neoplasms not present at birth. They develop during childhood, adolescence, or any time during adulthood. The annotations “common,” “ordinary,” “conventional,” or “banal” refer to the spectrum of acquired nevi most frequently encountered...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-04
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
...The melanocytic nevus commonly referred to as dysplastic is a fairly common acquired lesion with clinical and pathologic features intermediate between an ordinary nevus and superficial spreading melanoma. Other terms for this nevus include melanocytic nevus with architectural disorder...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-05
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
...The category of nevi of special site is useful to address unusual or atypical histopathologic features of melanocytic nevi that tend to be associated with various anatomic sites ( 1 – 4 ). It is relevant for pathologists to be aware of the spectrum of site-related atypical features...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-06
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
...This chapter addresses the histopathologic changes associated with persistent melanocytic nevi presenting with repigmentation after prior surgery and nevi changing in response to nonsurgical mechanical trauma or biochemical injury, such as effects from cancer treatment. Knowledge of the effects...
Book
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH EDEMA Figure 3-13 MELANOCYTIC NEVUS WITH EDEMA A: Compound melanocytic nevus with prominent edema of its dermal stroma. B: Cytologically bland dermal melanocytes are separated by an edematous stroma. More about this image found in MELANOCYTIC NEVUS WITH EDEMA A: Compound melanocytic nevus with prominent ...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH MITOSES Figure 3-17 MELANOCYTIC NEVUS WITH MITOSES A: Silhouette of a melanocytic nevus that had grown during pregnancy. B: Most of the melanocytes are seen in the dermis, but there is also a junctional proliferation of melanocytes. C: A few mitotic figures are seen (arro... More about this image found in MELANOCYTIC NEVUS WITH MITOSES A: Silhouette of a melanocytic nevus that h...
Images
Published: 01 February 2024
PERSISTENT MELANOCYTIC NEVUS Figure 6-1 PERSISTENT MELANOCYTIC NEVUS A: There is a focal junctional melanocytic proliferation (inset) confined to the epidermis overlying an inflamed scar. B: Close up of inset shows melanocytes at the dermoepidermal junction above the scar displaying architectura... More about this image found in PERSISTENT MELANOCYTIC NEVUS A: There is a focal junctional melanocytic pr...
Images
Published: 01 February 2024
BALLOON CELL COMPOUND MELANOCYTIC NEVUS Figure 2-10 BALLOON CELL COMPOUND MELANOCYTIC NEVUS A dominant population of melanocytes displays abundant cytoplasm with clear cell (balloon cell) features. More about this image found in BALLOON CELL COMPOUND MELANOCYTIC NEVUS A dominant population of melanocyt...
Images
Published: 01 February 2024
COMPOUND MELANOCYTIC NEVUS Figure 3-5 COMPOUND MELANOCYTIC NEVUS Melanocytes are present both at the dermoepidermal junction as well as in the superficial dermis. More about this image found in COMPOUND MELANOCYTIC NEVUS Melanocytes are present both at the dermoepider...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH PSEUDOVASCULAR CHANGES Figure 3-12 MELANOCYTIC NEVUS WITH PSEUDOVASCULAR CHANGES Some of the melanocytes are discohesive and create spaces (*) resembling vascular lumens lined by endothelial cells. More about this image found in MELANOCYTIC NEVUS WITH PSEUDOVASCULAR CHANGES Some of the melanocytes are ...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH LIPIDIZATION Figure 3-14 MELANOCYTIC NEVUS WITH LIPIDIZATION Some of the melanocytes show microvesicular lipidized cytoplasm similar to sebocytes (arrows). More about this image found in MELANOCYTIC NEVUS WITH LIPIDIZATION Some of the melanocytes show microvesi...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH CLEAR BALLOON CELL CHANGES Figure 3-16 MELANOCYTIC NEVUS WITH CLEAR BALLOON CELL CHANGES The melanocytes display large epithelioid cell features with abundant clear cytoplasm (arrows). More about this image found in MELANOCYTIC NEVUS WITH CLEAR BALLOON CELL CHANGES The melanocytes display ...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH MULTINUCLEATED MELANOCYTES Figure 3-19 MELANOCYTIC NEVUS WITH MULTINUCLEATED MELANOCYTES Arrows indicate the multinucleated melanocytes. More about this image found in MELANOCYTIC NEVUS WITH MULTINUCLEATED MELANOCYTES Arrows indicate the mult...
Images
Published: 01 February 2024
MELANOCYTIC NEVUS WITH INTRALYMPHATIC NEST Figure 3-22 MELANOCYTIC NEVUS WITH INTRALYMPHATIC NEST A nest of melanocytes is seen in the lumen of a lymphatic vessel (arrow). More about this image found in MELANOCYTIC NEVUS WITH INTRALYMPHATIC NEST A nest of melanocytes is seen i...
Images
Published: 01 February 2024
PERSISTENT MELANOCYTIC NEVUS WITH PAGETOID SPREAD Figure 6-4 PERSISTENT MELANOCYTIC NEVUS WITH PAGETOID SPREAD Pigmented melanocytes are arranged in nests of varying size and shape at the dermoepidermal junction and in the superficial dermis. Melanocytes (arrows) are seen in the mid epidermis. More about this image found in PERSISTENT MELANOCYTIC NEVUS WITH PAGETOID SPREAD Pigmented melanocytes ar...
Images
Published: 01 February 2024
SPITZ NEVUS WITH MULTINUCLEATED MELANOCYTES Figure 7-13 SPITZ NEVUS WITH MULTINUCLEATED MELANOCYTES Many melanocytes contain multiple nuclei. More about this image found in SPITZ NEVUS WITH MULTINUCLEATED MELANOCYTES Many melanocytes contain multi...
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