Store
|
Contributing Editors
|
Help
|
Contact
|
Sign In
select
All
Images Only
Search
home
resources
images
handouts
videos
quizzes
boardreview
atoz
< Current issue
Dermatopathology: Practical & Conceptual October - December 2005
>
4. New observation: Herpes incognito is herpes zoster—and its pattern histopathologic is distinctive!
Almut Böer, M.D.
Nina Herder
Norbert Blödorn-Schlicht, M.D.
Thomas Falk
Introduction
Method
Results
Comment
Conclusions
References
SEE ALSO
-
zoster
<
Previous
|
Next
>
Results
PCR revealed herpesvirus-specific DNA in 12 of 35 specimens. The vast majority of those specimens (10 of 12) were VZV positive, one was HSV-2 positive, and one was HSV-1 positive. Of the 12 cases, 10 presented themselves in very similar fashion (8 VZV, 1 HSV1, one HSV2) (
Figs. 1
7
). All lesions were macular or papular; none of them was vesicular. Sections were typified by dense perivascular and sparse interstitial infiltrates of lymphocytes mostly, sometimes assuming a patchy lichenoid pattern. Infiltrates tended to involve the lower part of the dermis and the subcutaneous tissue. They were prominent around adnexal structures, especially around follicles, sebaceous glands, and eccrine glands. Involvement of adnexal structures seemed to account for the depth of the infiltrates. Invariably, lymphocytes were present within epithelial structures. They were found in the lower part of the epidermis especially, sometimes in the basal layer only, accompanied by little spongiosis and some vacuolar alteration. Lymphocytes were also present in infundibular, follicular, and sebaceous epithelium, sometimes peppering those epithelial structures. Typically, spongiosis was slight and occurred together with vacuolar alteration or smudging of the dermoepidermal interface. Acantholysis was absent; slight ballooning of keratinocytes was present in but one biopsy specimen. Necrotic keratinocytes ranging from few to several were encountered not only in the basal layer but also in the spinous zone. The cornified layer was almost always basketwoven in orthokeratotic fashion. Lymphocytes were also encountered around, and sometimes within, nerves. The papillary dermis was often edematous, and vessels in the dermis were dilated. Extravasated erythrocytes in variable numbers were a common finding, especially in the papillary dermis. The infiltrates consisted predominantly of lymphocytes, some of which were large and polygonal. Neutrophils and nuclear dust were present sometimes but not invariably, and eosinophils were rare.
View Figure
View Figure
View Figure
View Figure
Figure 1AD
Superficial and deep infiltrate of lymphocytes (A), positioned densely around vessels and sparse interstitially (B). Sparse infiltrates of lymphocytes extend deep into the subcutaneous fat (C). A few lymphocytes are situated in the epidermis along with slight spongiosis and a tad of vacuolar alteration (D). Some erythrocytes are scattered in the edematous papillary dermis. The cornified layer is orthokeratotic in basket-woven fashion.
View Figure
View Figure
Figure 2A and B
Infiltrate of lymphocytes superficial and deep, positioned around vessels and adnexal structures and interstitially and extending into the subcutaneous fat (A). A few lymphocytes are situated in the epidermis along with slight spongiosis and a tad of vacuolar alteration (B). The cornified layer is orthokeratotic in basket-woven fashion.
View Figure
View Figure
View Figure
Figure 3AC
Sparse superficial and deep perivascular infiltrate of lymphocytes (A). Lymphocytes and numerous erythrocytes are scattered in the papillary dermis and the superficial reticular dermis (B). Lymphocytes along with scant spongiosis are situated in the lower part of the epidermis. Individual necrotic keratinocytes may be encountered not only in the basal layer but also in the spinous zone (C). Some keratinocytes show hints of ballooning.
View Figure
View Figure
View Figure
View Figure
Figure 4AD
Superficial and deep infiltrate of lymphocytes, positioned densely around vessels and adnexal structures and sparse interstitially and extending into the subcutaneous fat (A). Lymphocytes are positioned around, and sometimes within, nerves (B). Lymphocytes pepper sebaceous lobules (C). Erythrocytes are present in the papillary dermis (D). Lymphocytes are scattered in the epidermis along with scant spongiosis and some vacuolar alteration of the basal layer.
View Figure
View Figure
View Figure
Figure 5AC
Superficial and deep infiltrate of lymphocytes, positioned densely around vessels and adnexal structures and sparse interstitially and extending into the subcutaneous fat (A). Extension in the subcutaneous tissue seems to be cause by periadnexal distribution of the infiltrate. Lymphocytes pepper sebaceous lobules and follicular epithelium including the bulb of the follicle (B). Lymphocytes are scattered in the lower part of the epidermis accompanied by both spongiosis and vacuolar alteration (C). The cornified layer is basket-woven orthokeratotic.
View Figure
View Figure
View Figure
View Figure
Figure 6AD
Superficial and deep infiltrate of lymphocytes, positioned densely around vessels and adnexal structures and sparse interstitially and extending into the subcutaneous fat (A). Extension in the subcutaneous tissue seems to be cause by periadnexal distribution of the infiltrate. Lymphocytes pepper follicular epithelium (B) including the bulb of the follicle (C). Individual lymphocytes are situated in the basal layer, and erythrocytes are scattered in the papillary dermis (D). The cornified layer is basket-woven orthokeratotic.
View Figure
View Figure
View Figure
Figure 7AC
A similar pattern in infection with herpes simplex virus type I. Infiltrate of lymphocytes (A), positioned densely around vessels and sparse interstitially (B). The papillary dermis is edematous and houses extravasated erythrocytes (C). Lymphocytes are present in the epidermis whose cornified layer is basket-woven orthokeratotic.
<
Previous
|
Next
>
This site is made possible in part by:
Copyright © Derm101.com. All Rights Reserved.