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American Journal of Dermatopathology

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https://www.readbyqxmd.com/read/27922891/coexistence-of-adult-onset-eruptive-syringoma-and-bilateral-renal-cell-carcinoma-a-case-report
#1
Pinar Incel Uysal, Basak Yalcin, Esra Ozhamam, Onder Bozdogan
Eruptive syringoma is an unusual variant of syringoma, which usually presents before or during puberty. It typically occurs in large numbers as multiple yellow-brown-colored papules, which may show spontaneous regression. Because some authors have proposed that it could present as a reactive process of eccrine ducts to an inflammatory reaction caused by an unknown trigger, the exact pathomechanism is still unclear. There are also reports in the literature on the association of eruptive syringoma in Down syndrome, diabetes, milium, sarcoidosis, and psychiatric disorders...
December 2, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27906695/metformin-induced-generalized-fixed-drug-eruption-with-cutaneous-hemophagocytosis
#2
Jose Luis Rodríguez-Belver, Joaquin Lopez, Elena Macias, Laura Fuertes, Irene Andres, Victoria Alegria, Ignacio Gimeno, Alejandra Perez, Yosmar Perez, Luis Requena
Fixed drug eruption (FDE) consists of recurrent dusky-red to brownish macules or patches at the same sites after the readministration of the causative drug. It usually presents as a solitary lesion, but generalized eruptions have been described. The most frequently implied drugs are antibiotics, anticonvulsants, and analgesics. Only 2 cases due to metformin have been reported. Histopathologic features of FDE include vacuolar degeneration of the basal layer, necrotic keratinocytes, and superficial and deep perivascular lymphocytic infiltrate...
November 29, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27906694/follicular-malignant-melanoma-a-rare-morphologic-variant-of-melanoma-report-of-a-case-and-review-of-the-literature
#3
Iona Chapman, Sharon Horton, Wenhua Liu
Follicular malignant melanoma (FMM) is an exceedingly rare variant of melanoma. Only 8 cases have been reported in the literature thus far. Often bland on physical examination, FMM shows a striking histologic pattern, with atypical melanocytes sometimes consuming the entire follicle and extending into the dermis. Criteria have been suggested to help distinguish FMM from lentigo maligna melanoma; however, no clear criteria distinguish this cancer clinically. FMM cannot be distinguished from follicular metastases of melanoma based on histology, requiring close clinical correlation and detailed history taking on the part of the practitioner...
November 29, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27898475/pulmonary-signet-ring-cell-adenocarcinoma-metastatic-to-the-skin
#4
Alan S Boyd
Internal malignancies occasionally metastasize to the skin, usually imparting a poor prognosis. In men, pulmonary malignancies are the second most common offending tumor. Roughly, half such lesions are adenocarcinomas. A small subset of pulmonary adenocarcinomas exhibits signet-ring morphology. To date, a cutaneous metastasis arising from a pulmonary signet-ring cell adenocarcinoma has not been reported.
November 23, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27898474/is-it-a-metastatic-disease-a-case-report-and-new-understanding-of-rosai-dorfman-disease
#5
Carolina Martínez-Ciarpaglini, Carlos Monteagudo
No abstract text is available yet for this article.
November 23, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27898473/histopathological-and-clinical-findings-in-cutaneous-manifestation-of-erdheim-chester-disease-and-langerhans-cell-histiocytosis-overlap-syndrome-associated-with-the-brafv600e-mutation
#6
Julia Liersch, J Andrew Carlson, Jörg Schaller
The overlap of Erdheim-Chester disease (ECD) and Langerhans cell histiocytosis (LCH) is more common than it was generally accepted. Both diseases seem to be linked by a mutation in oncogenic BRAFV600E, probably an early event which occurs in bone marrow progenitor cells. In this article are described the clinical and histological findings in 2 cases of ECD-LCH overlap syndrome bearing the BRAFV600E mutation in both ECD and LCH lesions in bone and skin. In one case, lesions of ECD and LCH were situated directly site-to-site in the same bone section leading to the assumption of a common myeloid precursor cell for these diseases...
November 23, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27893468/linear-folliculotropic-cd30-positive-lymphomatoid-drug-reaction
#7
Yi-Chin Chen, Yu-Hung Wu
We report a unique case of probable drug-induced CD30-positive lymphomatoid reaction. A 58-year-old woman presented with bilateral facial eruptions of 3 weeks duration composed of erythematosus papules in a linear distribution. The pathological features demonstrated a dense dermal and follicular infiltrate of many medium- to large-sized atypical CD30-positive lymphoid cells. The rash resolved rapidly after discontinuation of her medication 1 week later and did not recur. This case highlights the importance of clinicopathological correlation...
November 22, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27893467/bullous-pyoderma-gangrenosum-with-subungual-involvement-associated-with-ulcerative-colitis
#8
Ezgi Aktaş Karabay, Asl Aksu Cerman, İlknur Kvanc Altunay, Özben Yalçn
Pyoderma gangrenosum (PG) is a rare inflammatory and ulcerative skin disease of unknown etiology characterized by neutrophilic infiltration of the dermis, mainly affecting the lower extremities. Bullous PG is a rare variant of this disease, usually associated with hematologic disorders. Here, we report a case of pathergy-positive bullous PG with subungual involvement associated with ulcerative colitis.
November 22, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27893466/cd30-expression-is-rare-in-myeloid-leukemia-cutis-a-study-of-55-cases-and-implications-for-routine-diagnostic-algorithms
#9
Olakunle Ogunrinade, David Terrano, April Chiu, Melissa Pulitzer
Expression of CD30 in blastoid cutaneous infiltrates typically signifies a CD30 lymphoproliferative disorder, often requiring minimal immunohistochemical workup, if clinically consonant. However, myeloid and other hematologic malignancies often express CD30. We retrospectively examined the prevalence of CD30 expression in 41 patients (median age 59) and 55 biopsies with the diagnosis of leukemia cutis (LC) to determine whether an extensive immunohistochemical workup is warranted in all large, round cell CD30 cutaneous infiltrates...
November 22, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27898472/a-case-of-trichogerminoma-with-pilomatrical-differentiation-and-a-unique-immunohistochemical-profile
#10
Jonathan Epperson, Lester Libow
Trichogerminomas are rare adnexal neoplasms first described by Sau et al in 1992. Including the initial report, 20 cases have been reported, all with similar histological features, namely tumor nodules composed of basaloid cells that form densely packed, round nests or "cell balls" and which demonstrate variable degrees of pilosebaceous differentiation. In this study, the authors report a case of a trichogerminoma with pilomatrical differentiation and a unique immunohistochemical profile. The patient is a 71-year-old man with a well-delineated nodule on the top of the scalp...
November 21, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27845943/broadening-the-anatomic-landscape-of-sclerosing-perineurioma-a-series-of-5-cases-in-nonacral-sites
#11
Emily M Erstine, Jennifer S Ko, Brian P Rubin, Jesse K McKenney, John R Goldblum, Steven D Billings
Sclerosing perineurioma is a rare perineurioma variant thought to occur almost exclusively in digits and palms, predominantly in young adult men. It clinically presents as a solitary slow-growing nodule, sometimes associated with prior trauma. Since 01/01/2000, our institution has received 5 cases in consultation of sclerosing perineurioma presenting in atypical locations. Four of 5 patients were women. The median age at presentation was 45 years (range, 31-62 years). Sites included dorsal tongue, anterior neck, mid upper back, forearm, and proximal anterior thigh...
November 11, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27922892/galectin-3-expression-in-benign-and-malignant-skin-diseases-with-epidermal-hyperplasia
#12
Ze-Xin Jiang, Guo-Zhen Tan, Zhen-Rui Shi, Yu-Ping Zhang, Yan-Fang Han, Liangchun Wang
Galectin-3 has been suggested relative to tumor genesis, progression, and metastasis in basal cell carcinoma and squamous cell carcinoma that are the most common skin cancers characterized by malignant epidermal proliferation. In this study, we evaluated galectin-3 expression in seborrheic keratosis, keratoacanthoma, and infectious diseases including verruca vulgaris, condyloma acuminatum, and chromoblastomycosis that are pathologically featured by benign epidermal proliferation. Galectin-3 expression was shown by immunohistochemical staining and quantified using the Image Pro Plus V6...
November 7, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27805922/giant-subcutaneous-solitary-gardner-fibroma-of-the-head-of-a-bulgarian-child
#13
Anastasiya A Chokoeva, James W Patterson, Georgi Tchernev
No abstract text is available yet for this article.
October 31, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27805921/c-cbl-e3-ubiquitin-ligase-expression-increases-across-the-spectrum-of-benign-and-malignant-t-cell-skin-diseases
#14
Katrin A Salva, Margo J Reeder, Rita Lloyd, Gary S Wood
Prolonged survival of lesional T cells plays a central role in the pathogenesis of T-cell-mediated dermatoses. We have recently shown that the ubiquitin ligase c-CBL is highly expressed in cutaneous T-cell lymphoma (CTCL) and that its knockdown increases activation-induced cell death, a key pathway for T-cell apoptosis. Here, we extend our work on c-CBL expression in malignant T cells to their nonneoplastic counterparts in benign inflammatory dermatoses. Immunohistochemical staining with anti-c-CBL antibody was performed on lesional biopsies from a total of 65 patients with atopic dermatitis, allergic contact dermatitis, pityriasis rosea, psoriasis vulgaris, lichen planus, mycosis fungoides (MF)/Sézary syndrome (SS) as well as on tonsil tissue from 5 individuals and on 5 human CTCL cell lines...
October 31, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27805920/benign-glandular-schwannoma-with-ancient-change
#15
Alex C Holliday, Sean E Mazloom, Garrett C Coman, Michael S Kolodney, Rahul N Chavan, Douglas J Grider
Benign glandular schwannomas are rare and should be distinguished from malignant peripheral nerve sheath tumors with similar divergent tissue differentiation. The authors present a benign glandular schwannoma with ancient change that developed in the subcutis of a 46-year-old man's posterior calf. He lacked stigmata of neurofibromatosis type 1 (NF1). The glandular elements stained positively for epithelial membrane antigen and pancytokeratin. The spindled cells stained positively for SOX10 and S100 protein, supporting schwannian (neural crest) differentiation...
October 31, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27828802/agminated-clear-cell-tumor-an-impostor-of-pecoma-and-distinctive-dermal-clear-cell-mesenchymal-neoplasm
#16
Ana Isabel Teixeira, Luís Soares-Almeida, Heinz Kutzner
Cutaneous clear cell tumors are a heterogeneous group of cutaneous neoplasms, which may show a wide range of histogenesis. We report the clinicopathological features of an agminated clear cell tumor, arising in a 67-year-old man, otherwise asymptomatic, with distinct histopathological and immunohistochemical features, which did not fit into any existing diagnostic categories. The patient presented with several skin-colored papules at the lateral and posterior aspects of the neck, which on histopathological examination showed circumscribed lobular aggregates of clear cells within the dermis...
October 28, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27831940/pseudo-bullous-dermatosis-induced-by-topical-anesthetic-agent-clues-to-this-localized-toxic-reaction
#17
Christopher R Kieliszak, John R Griffin, Tess H Pollinger, Jacqueline M Junkins-Hopkins
Eutectic mixture of 2.5% lidocaine and 2.5% prilocaine (EMLA AstraZeneca, DE) is a widely used topical anesthetic cream for preprocedural cutaneous analgesia. In addition to potential clinical cutaneous and systemic adverse effects, EMLA may also induce microscopic changes detectable by light and electron microscopy leading to difficulty in accurate diagnosis. We report the case of a biopsy demonstrating EMLA-induced histopathologic changes. The biopsy was taken from the back of a 5-month-old infant and submitted to rule out psoriasis...
October 26, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27759704/sox10-positive-cells-within-scars-a-potential-diagnostic-pitfall
#18
Nathan T Harvey, Nathan J Acott, Benjamin A Wood
No abstract text is available yet for this article.
October 18, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27759703/p53-is-a-helpful-marker-in-distinguishing-langerhans-cell-histiocytosis-from-langerhans-cell-hyperplasia
#19
Shane A Grace, Angela M Sutton, Eric S Armbrecht, Claudia I Vidal, Ilana S Rosman, Maria Y Hurley
Langerhans cell histiocytosis (LCH) is a proliferative disorder of Langerhans cells that can be challenging to distinguish histologically from Langerhans cell (LC) hyperplasia, seen in a variety of inflammatory dermatoses. Lesional cells in both entities demonstrate positive staining for CD1a and S100. Previous studies have demonstrated positive staining of fascin, CD31, and p53 in cases of LCH, but currently, no studies have compared the staining profiles of these markers between LCH and LC hyperplasia. The authors compared immunohistochemical staining profiles of LCH (n = 15) and various inflammatory dermatoses with LC hyperplasia (n = 15) using fascin, CD31, and p53...
October 18, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27759702/melanocytic-matrical-carcinoma-mimicking-melanoma
#20
Chao Ji, Yue Zhang, Patricia Heller, Ying Guo
Melanocytic matrical carcinoma is a very uncommon malignant neoplasm with follicular differentiation. The lesion often presents as a solitary nodule on sun-exposed skin of elderly patients. Histopathologically, it is characterized by proliferation of atypical matrical cells admixed with an increased number of melanocytes, and some atypical matrical cells may have cytoplasmic pigment. When melanocytic proliferation or melanin pigment is prominent, melanocytic metrical carcinoma can mimic melanoma. Here, we present a novel case of melanocytic matrical carcinoma mimicking melanoma in an 80-year-old man with our findings in histopathologic and immunohistochemical study...
October 18, 2016: American Journal of Dermatopathology
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