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lichenoid

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NEST OF LENTIGO MALIGNA VERSUS INFLAMMATORY PSEUDONEST  A: A junctional nes...
Published: 01 February 2024
NEST OF LENTIGO MALIGNA VERSUS INFLAMMATORY PSEUDONEST Figure 13-10 NEST OF LENTIGO MALIGNA VERSUS INFLAMMATORY PSEUDONEST A: A junctional nest of melanocytes is seen in a margin section from a lentigo maligna melanoma (LMM) in situ. B: This lichenoid inflammatory pseudonest is composed of a clu... More about this image found in NEST OF LENTIGO MALIGNA VERSUS INFLAMMATORY PSEUDONEST A: A junctional nes...
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SUBUNGUAL MELANOMA IN SITU  A: There is a proliferation of solitary units o...
Published: 01 February 2024
SUBUNGUAL MELANOMA IN SITU Figure 14-13 SUBUNGUAL MELANOMA IN SITU A: There is a proliferation of solitary units of melanocytes involving the nail bed and nail matrix associated with focal lichenoid inflammation (*). B: The density of melanocytes is above normal, but overall relatively low. C: ... More about this image found in SUBUNGUAL MELANOMA IN SITU A: There is a proliferation of solitary units o...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-13
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... lentigo, lichenoid keratosis, pigmented seborrheic or pigmented actinic keratosis, or pigmented squamous cell carcinoma in situ. Some lesions of LM present clinically as an erythematous patch. LENTIGO MALIGNA Figure 13-1 LENTIGO MALIGNA A: Irregular pigmented patch on the cheek of an elderly woman. B...
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
...  Basal layer hyperpigmentation  Normal density of melanocytes or solar melanocyte hyperplasia  No cytologic atypia  May be inflamed  May be associated with melanophages Differential Diagnosis  Pigmented actinic keratosis  Macular pigmented seborrheic keratosis  Lichenoid...
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
... fibrosis Ear Often poorly circumscribed Poor lateral demarcation Lentiginous growth Focal pagetosis Focal atypia Genital Premenopausal Usually small Architectural disorder and atypia Large junctional nests with dyscohesion Associated lichenoid inflammation Umbilicus Usually young patients...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 19
Published: 01 February 2024
10.55418/9781933477428-14
ISBN-10: 1-933477-42-3
ISBN: 978-1-933477-42-8
... matrix associated with focal lichenoid inflammation (*). B: The density of melanocytes is above normal, but overall relatively low. C: The melanocytes have enlarged, hyperchromatic and irregularly shaped nuclei (arrows). In later stages of melanoma in situ, there is confluence of junctional melanocytes...
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
... with an increased number of ectatic blood vessels. B: Juxtaposition of bland intradermal melanocytes and ectatic blood vessels with an angioma-like appearance. Halo and Eczematous Nevi Some nevi are associated with a variably dense infiltrate of lymphocytes and histiocytes, usually displaying a lichenoid...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 14
Published: 01 February 2023
10.55418/9781933477268-5
ISBN-10: 1-933477-26-1
ISBN: 978-1-933477-26-8
... component that forms nests in the basal layers and extends toward superficial layers, usually in a single cell fashion. A lichenoid inflammatory infiltrate and variable fibrosis are often present. Nodular melanoma is similar, but the overlying and adjacent epithelium is either normal or without...
Images
<span class="search-highlight">LICHENOID</span> KERATOSIS  Left: Prominent <span class="search-highlight">lichenoid</span> interface change resembles l...
Published: 01 September 2021
LICHENOID KERATOSIS Figure 1-21 LICHENOID KERATOSIS Left: Prominent lichenoid interface change resembles lichen planus. Right: On higher magnification, the chronic inflammatory cell infiltrate results in prominent interface change with apoptotic keratinocytes and colloid bodies. More about this image found in LICHENOID KERATOSIS Left: Prominent lichenoid interface change resembles l...
Images
<span class="search-highlight">LICHENOID</span> KERATOSIS  Left: There are alternating areas of epidermal hyperpl...
Published: 01 September 2021
LICHENOID KERATOSIS Figure 1-20 LICHENOID KERATOSIS Left: There are alternating areas of epidermal hyperplasia and atrophy, with overlying hyperkeratosis and a dense band-like inflammatory infiltrate in the superficial dermis. Right: Higher magnification of the band-like chronic inflammatory cel... More about this image found in LICHENOID KERATOSIS Left: There are alternating areas of epidermal hyperpl...
Images
<span class="search-highlight">LICHENOID</span> KERATOSIS  In the later stages of evolution the chronic inflammat...
Published: 01 September 2021
LICHENOID KERATOSIS Figure 1-22 LICHENOID KERATOSIS In the later stages of evolution the chronic inflammatory infiltrate has largely disappeared and there are several colloid bodies in the super ficial dermis. More about this image found in LICHENOID KERATOSIS In the later stages of evolution the chronic inflammat...
Images
<span class="search-highlight">LICHENOID</span> KERATOSIS  Left: Marked interface change may lead to bulla format...
Published: 01 September 2021
LICHENOID KERATOSIS Figure 1-23 LICHENOID KERATOSIS Left: Marked interface change may lead to bulla formation with subepidermal tissue separation. Right: Higher magnification of the subepidermal split is shown. Apoptotic keratinocytes are evidence of the interface tissue reaction. More about this image found in LICHENOID KERATOSIS Left: Marked interface change may lead to bulla format...
Images
<span class="search-highlight">LICHENOID</span> KERATOSIS  Melan A highlights residual junctional melanocytes in ...
Published: 01 September 2021
LICHENOID KERATOSIS Figure 1-24 LICHENOID KERATOSIS Melan A highlights residual junctional melanocytes in contrast to regressed melanocytic lesions. More about this image found in LICHENOID KERATOSIS Melan A highlights residual junctional melanocytes in ...
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ACTINIC KERATOSIS  Left: An associated dense band-like chronic inflammatory...
Published: 01 September 2021
ACTINIC KERATOSIS Figure 1-31 ACTINIC KERATOSIS Left: An associated dense band-like chronic inflammatory infiltrate is characteristic of lichenoid actinic keratosis. Right: Lichenoid actinic keratosis is characterized by squamous dysplasia and vacuolar interface change at the dermalepidermal jun... More about this image found in ACTINIC KERATOSIS Left: An associated dense band-like chronic inflammatory...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 7
Published: 01 September 2021
10.55418/9781933477121-1
ISBN-10: 1-933477-12-1
ISBN: 978-1-933477-12-1
... with a seborrheic keratosis. Treatment and Prognosis . No specific treatment is required. Seborrheic keratoses are benign. Lichenoid Keratosis Definition . Lichenoid keratoses (lichen planus-like keratoses) are benign intraepidermal squamoproliferative lesions characterized by a lichenoid chronic...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 7
Published: 01 September 2021
10.55418/9781933477121-3
ISBN-10: 1-933477-12-1
ISBN: 978-1-933477-12-1
... and clinical findings, since clonal TCR rearrangements are well documented in a variety of inflammatory dermatoses such as discoid lupus erythematosus, lichen planus, lichen sclerosus, and pityriasis lichenoides et varioliformis acuta ( 50 ). Differential Diagnosis . Mycosis fungoides, particularly...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 6
Published: 01 August 2021
10.55418/9781933477091-ch05
ISBN-10: 1-933477-09-1
ISBN: 978-1-933477-09-1
... are present but these should be a minor component. There is a spectrum of severity of the lesion from mild peppering of lymphocytes ( fig. 5-6-1 ) to a diffuse “lichenoid” band of lymphocytes often associated with trophoblastic apoptosis ( fig. 5-6-2 ). A grading and staging scheme was used in one study ( 2...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 5
Published: 01 May 2021
10.55418/9781933477947-10
ISBN-10: 1-933477-94-6
ISBN: 978-1-933477-94-7
... , Garcia-Diez   A , Fraga   J . Superficial mucoceles and lichenoid graft versus host disease: report of three cases . Acta Derm Venereol   2002 ; 82 : 453 - 5 . 100. Balasubramaniam   R , Alawi   F , DeRossi   S . Superficial mucoceles in chronic graft-versus-host disease: a case...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 4
Published: 01 April 2021
10.55418/9781933477930-02
ISBN-10: 1-933477-93-8
ISBN: 978-1-933477-93-0
... propria with degeneration of basal keratinocytes ( fig. 2-32 ). Direct immunofluorescence reveals globular IgM deposits along the basement membrane and complement staining of apoptotic keratinocytes. The term “lichenoid esophagitis pattern” has been proposed to describe cases that share histologic...
Images
LICHEN SCLEROSUS: <span class="search-highlight">LICHENOID</span>  Left: Low-power view shows an extensive lympho...
Published: 01 October 2020
LICHEN SCLEROSUS: LICHENOID Figure 3-16 LICHEN SCLEROSUS: LICHENOID Left: Low-power view shows an extensive lymphocytic infiltrate in lamina propria. Right: High-power view shows the dense lymphocytic infiltrate. More about this image found in LICHEN SCLEROSUS: LICHENOID Left: Low-power view shows an extensive lympho...