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Journal of Cutaneous Pathology

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https://www.readbyqxmd.com/read/28102002/pseudoherpetic-transient-acantholytic-dermatosis-grover-disease-case-series-and-review-of-the-literature
#1
Kiran Motaparthi
Three cases of pseudoherpetic transient acantholytic dermatosis (Grover disease) are presented, followed by a brief review of prior reports. All three patients were above the age of 60 and presented with a pruritic eruption composed of papules with or without vesicles distributed on the trunk. For all three patients, the clinical differential diagnosis included drug eruption but did not include Grover disease; in one patient, the clinical impression included herpesvirus infection. Similar histologic and immunohistochemical findings were demonstrated in all three cases...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28098407/tumefactive-foreign-body-giant-cell-reaction-following-high-pressure-paint-injection-injury-a-case-report-and-review-of-literature
#2
Shakuntala H Mauzo, Michael Swaby, Michael Covinsky
High pressure paint injection injury is an uncommon but well-described injury. The histologic features of long-term paint injection injury with retained material are less recognized. A 46 year old male presented clinically as "recurrent giant cell tumor of tendon sheath". The right index finger demonstrated fusiform enlargement by a pigmented mass with diffuse infiltration into the soft tissue of the hand. Histologically the tumor showed multiple giant cells in a fibrotic stroma extending into the dermis. There were multiple types of foreign material including diffuse brown black pigment, weakly optically polarizing foreign material and white inclusions with a "train track" appearance...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28098399/myb-cd117-and-sox-10-expression-in-cutaneous-adnexal-tumors
#3
Mara Therese P Evangelista, Jeffrey P North
BACKGROUND: Elevated MYB expression has been documented in adenoid cystic carcinoma (ACC), cylindroma, and spiradenoma, but the specificity of this finding is unknown. CD117 and SOX-10 expression also occurs in some cutaneous adnexal tumors. This study assesses MYB, CD117, and SOX-10 expression in cutaneous adnexal tumors. METHODS: Retrospective analysis of 184 benign adnexal tumors (140 eccrine/apocrine, 40 follicular, and 10 sebaceous), and 30 malignant adnexal tumors was performed with MYB, SOX-10, and CD117 immunostaining...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28098393/clinical-and-histopathological-features-of-cutaneous-nontuberculous-mycobacterial-infection-a-review-of-13-cases
#4
Jing Jing Li, Rohan Beresford, Janet Fyfe, Christopher Henderson
BACKGROUND: The incidence of cutaneous nontuberculous mycobacterial (NTM) infection has increased in recent decades due to widespread use of immunosuppressive therapy and better detection methods. The histopathology of cutaneous NTM infection is not pathognomic and the organisms are slow and difficult to culture, making diagnosis challenging. METHODS: We reviewed the clinical and histopathological features of 13 cases of cutaneous NTM infection, and performed panmycobacterial polymerase chain reaction (PCR) on the paraffin blocks...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28097678/aberrant-tyrosinase-expression-in-an-atypical-fibroxanthoma-a-case-report
#5
Amy Weiss, Vijay Vanchinathan, Eun Ji Kwon
Atypical fibroxanthoma (AFX) is a histologic mimicker of a variety of spindle cell neoplasms and careful microscopic and immunohistochemical evaluation is critical in establishing the correct diagnosis. Here we report the histologic and immunohistochemical work-up of a 1 cm nodule involving the left dorsal hand of a 66-year-old patient. Light microscopy revealed fascicles of spindled and pleomorphic cells within the dermis demonstrating increased mitotic activity occurring in the background of sun-damaged skin...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28097676/morbihan-disease-complicated-by-dermatosis-neglecta-a-unique-presentation
#6
Ariel E Eber, Stephanie Mlacker, Sebastian Verne, Robert Griffith, Jennifer Ledon, Marina Perper, Keyvan Nouri, Jeong Hee Cho-Vega
Morbihan disease (MD), also referred to as solid facial edema, or rosacea lymphedema, is a rare disorder that involves chronic erythema and solid edema of the cheeks, eyelids, forehead and glabella and may arise as a complication of acne vulgaris or rosacea. Of note, it may be the only initial presenting symptom of these associated diseases.1,2 Few cases have been described in the literature, since its first description by Robert Degos in 1957. The condition is characterized by its chronicity, a typical clinical appearance, and the lack of specific histopathologic or laboratory findings...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28083948/gain-of-cd26-expression-on-the-malignant-t-cells-in-relapsed-erythrodermic-leukemic-mycosis-fungoides
#7
Filiberto Cedeno-Laurent, Maria Wysocka, Amrom E Obstfeld, Roberto A Novoa, Carmela C Vittorio, Ellen J Kim, Wen-Kai Weng, Alain H Rook
Loss of CD26 surface expression on the circulating malignant T-cell is the most widely accepted diagnostic marker in patients with leukemic cutaneous T-cell lymphoma (CTCL). CTCL cases with reemergence of CD7 and/or CD26 surface expression are unusual and of uncertain prognosis. We report the case of an erythrodermic leukemic mycosis fungoides patient who had achieved temporary remission after a several months on multimodality immunotherapy and extracorporeal photopheresis, but who relapsed with aggressive disease phenotypically characterized by CD4+ T-cells with high CD26 expression...
January 13, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28075051/bilateral-multifocal-upper-extremity-atypical-granular-cell-tumors-presenting-as-long-standing-right-wrist-and-left-hand-masses-in-a-15-year-old-african-american-female
#8
Michael DeWall, Corey O Montgomery, Jerad M Gardner
Granular cell tumor (GrCT) is a benign nerve sheath tumor. Atypical and malignant variants of GrCT are rare but have been well described. We report a case of multifocal symmetric atypical GrCT in the bilateral hand/wrists of a 15 year old African American female. The initial clinical impression for both masses were favored to be ganglion cysts. Ultrasound findings of both masses revealed hypoechoic soft tissue lesions with some internal echogenicity favoring complex cysts. On excision, both masses were histologically circumscribed, lobulated, and attached to tendon...
January 11, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28075032/-microbiological-findings-and-antibacterial-therapy-in-stevens-johnson-syndrome-toxic-epidermal-necrolysis-patients-from-a-swedish-burn-center
#9
Ilaria Tocco-Tussardi, Fredrik Huss, Benjamin Presman
BACKGROUND: Superimposed infections/sepsis are the major cause of morbidity/mortality in Stevens-Johnson syndrome/Toxic Epidermal Necrolysis (SJS/TEN). It is a delicate balance between avoiding new pharmaceuticals and prophylactically treat an incipient infection. The objective of this study was to investigate the rates and types of infection-microbials and antibiotics involved in SJS/TEN patients. METHODS: Microbiology and clinical data were collected for SJS/TEN patients admitted to our Burn Centre from January 2010 through January 2016...
January 11, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28075031/angiotropic-syringomatous-carcinoma
#10
Eri Katayama, Hiroshi Saruta, Aya Nanri, Takekuni Nakama, Chika Ohata
Syringomatous carcinoma (SC) is a slow-growing malignant skin tumor that usually affects the face or scalp. An 83-year-old female developed SC on the sole, a rare location. Histopathologically, numerous ducts with few keratinizing cysts were seen in the upper dermis, and cords, strands, and nests with sclerotic stroma were seen in the deep dermis and subcutis. In addition to the perineural and intraneural invasion of the tumor, the tumor cells had also invaded the vessel walls. There was no intravasation of tumor cells or interruption of the endothelium...
January 11, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28067422/epidermal-psoriasiform-hyperplasia-an-unrecognized-sign-of-folliculitis-decalvans-a-histological-study-of-26-patients
#11
B Matard, B Cavelier-Balloy, P Reygagne
BACKGROUND: Follicular hyperkeratosis along with hyperplasia of the follicular and inter-follicular epithelia are major histopathological characteristics of Hidradenitis Suppurativa (HS). The presence of an occasional thickening of lesional skin in some Folliculitis Decalvans (FD) patients and histological similarities between FD and HS led us to look for epidermal hyperplasia and follicular hyperkeratosis in FD patients. PATIENTS AND METHOD: We performed a retrospective histological analysis of 26 patients with FD...
January 9, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28058749/is-psoriasis-an-autoimmune-disease-interpretations-from-an-immunofluorescence-based-study
#12
Shashi Anand, Parikshaa Gupta, Ranjeet Bhardwaj, Tarun Narang, Sunil Dogra, Ranjana W Minz, Biman Saikia, Seema Chhabra
INTRODUCTION: Psoriasis is a multisystem, immune-mediated inflammatory disease. Some authors have proposed an autoimmune basis for psoriasis; however, till date, it has not been definitely established. The present study was conducted to explore the autoimmune nature of psoriasis. MATERIALS AND METHODS: This was a prospective study in which 43 psoriasis patients were assessed for detailed clinical, histopathological and immunopathological features to explore the diagnostic utility of subtypes, intensity, and number of immunoreactants in lesional and non-lesional skin in these patients...
January 5, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28058733/acral-and-digital-angioleiomyomata-fourteen-year-experience-at-the-cleveland-clinic-and-review-of-the-literature
#13
Margaret I Hammond, Andrew G Miner, Melissa P Piliang
BACKGROUND: Angioleiomyoma is a benign neoplasm thought to derive from the tunica media of small venous vessels. Angioleiomyomata most frequently occur in the lower extremities with less common occurrences on the trunk, head, and upper extremities. Few cases of acral and digital angioleiomyoma have been described in the literature. METHODS: We add a series of twenty-one patients with acral angioleiomyoma including six cases of digital angioleiomyoma to the body of clinical and histologic findings along with a review of the literature of digital angioleiomyomata...
January 5, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035707/local-recurrence-of-cutaneous-mixed-tumor-chondroid-syringoma-as-malignant-mixed-tumor-of-the-thumb-20-years-after-initial-diagnosis
#14
Catherine M Nguyen, David S Cassarino
Benign cutaneous mixed tumor (chondroid syringoma) is the cutaneous counterpart of the benign mixed tumor (pleomorphic adenoma) of salivary glands, consisting of both epithelial and mesenchymal elements. The incidence of cutaneous mixed tumor is rare, composing < 0.01% of all primary skin tumors. Herein, we report a case of malignant mixed tumor which recurred in the right thumb 20 years after the reported initial diagnosis of a benign mixed tumor at this site. Histologically, the lesion consisted of highly atypical and infiltrative cells in cords and ductal structures, with an adjacent focus of residual benign mixed tumor present...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035705/a-rare-case-of-cutaneous-oncocytic-hidradenoma
#15
Shivani P Reddy, Kim Chong, David S Cassarino
Oncocytes are epithelial cells characterized by their abundant eosinophilic and finely granular cytoplasm. Their histologic appearance is due to excessive amounts of cytoplasmic mitochondria. Oncocytes generally occur in the setting of benign neoplasms. Oncocytomas, or tumors composed primarily of oncocytes, are typically found in the kidneys. Other common sites include the salivary, thyroid, and parathyroid glands. Oncocytic metaplasia has only been rarely reported in various cutaneous neoplasms. We report a case of an elderly male presenting with a 5 millimeter erythematous papule on his left scalp, who underwent a shave biopsy showing a nodular, dermal-based adnexal tumor with prominent ductal differentiation, composed of multiple small, well-formed lumina surrounded by enlarged, bland-appearing epithelioid cells...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035704/extra-acral-cutaneous-sclerosing-perineurioma-with-cd34-fingerprint-pattern
#16
Ricardo S Macarenco, Jade Cury-Martins
Sclerosing perineuroma is a variant of extraneural perineurioma that, as a rule, occurs in acral sites. However, it has also been occasionally reported in non-acral regions. Recently, CD34 expression in a pattern reminiscent of the human fingerprint has been observed in a subset of perineuriomas, but this immunohistochemical finding has not been documented in non-acral sclerosing perineuriomas. We report a case of sclerosing perineurioma presenting CD34 expression in a fingerprint-like pattern on the skin of the neck (a previously unreported site for this neoplasm) of a 56-year-old man...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035701/three-unusual-histopathological-presentations-of-angiolymphoid-hyperplasia-with-eosinophilia
#17
Angel Fernandez-Flores, David S Cassarino
Angiolymphoid hyperplasia with eosinophilia (ALHE) is a poorly understood benign vasculoproliferative disorder. Histopathologicaly, the lesions are composed of a dermal or subcutaneous proliferation of blood vessels of varying sizes with plump and bland endothelial cells, which often show vacuolization and protrusion of the cytoplasm into the lumen. The vascular proliferation is admixed with a diffuse inflammatory infiltrate composed of lymphocytes, eosinophils, and mast cells. Lymphoid follicles with germinal centers can sometimes be seen...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035700/cutaneous-extranodal-nk-t-cell-lymphoma-mimicking-cellulitis-in-a-hiv-positive-patient-without-lymphopenia
#18
Neeta Malviya, Yevgeniya Byekova, Travis Vandergriff, Melissa Mauskar
We present the case of a 28-year-old male with a history of HIV with a 1-month history of a steadily enlarging, firm painful lesion on the right posterior shoulder. The patient was initially treated for cellulitis given his clinical picture. Histopathologic examination revealed an angiocentric and dermal proliferation of markedly atypical lymphoid cells with numerous mitoses and apoptotic bodies along with broad zones of necrosis. Biopsy revealed the presentation to be consistent with NK/T-cell lymphoma. The cutaneous lesions from NK/T-cell lymphoma can often be initially mistaken for cellulitis, therefore this malignancy should be included on the differential in a patient HIV/AIDS...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28035696/hydrophilic-polymer-vasculopathy-with-coinciding-pseudoxanthoma-elasticum-like-changes-in-an-amputated-toe
#19
Silvija P Gottesman, Elham Yousefi, Raavi Gupta
For the past decades, hydrophilic polymer gel coating have been widely used on endovascular devices to decrease friction and to aid with binding and delivering of medications in drug eluting stents. In the recent years, hydrophilic polymer emboli disease has been recognized as an iatrogenic adverse effect which has led to considerable morbidity and mortality of patients. This under-recognized embolic phenomenon now has reproducible pathognomonic histologic findings. Small to medium sized blood vessels are occluded with basophilic, amorphous, non-refractile, non-polarizable, whirled aggregates of foreign body material...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28032662/5-hydroxymethylcytosine-is-a-nuclear-biomarker-to-assess-biological-potential-in-histologically-ambiguous-heavily-pigmented-melanocytic-neoplasms
#20
Jonathan J Lee, Ricardo E Vilain, Scott R Granter, Nina R Hu, Scott C Bresler, Shuyun Xu, Alexander H Frank, Martin C Mihm, Robyn P M Saw, Christopher D Fletcher, Richard A Scolyer, George F Murphy, Christine G Lian
BACKGROUND: 5-hydroxymethylcytosine (5-hmC) is an epigenetic marker detectable through immunohistochemistry (IHC) that has been shown to distinguish benign nevi from melanoma with high sensitivity and specificity. The purpose of the study was to explore its diagnostic utility in a subset of histologically challenging, heavily pigmented cutaneous melanocytic neoplasms. METHODS: 5-hmC IHC was performed on 54 heavily pigmented melanocytic tumors. Semi-quantitative analysis of immunoreactivity was correlated with clinical, pathologic, and follow-up data...
December 29, 2016: Journal of Cutaneous Pathology
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