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https://www.readbyqxmd.com/read/29779211/cutaneous-sarcoidosis-a-new-subset-in-the-spectrum-of-paraneoplastic-dermatoses
#1
M El-Khalawany, A Mosbeh, S Aboeldahab, S Ali
BACKGROUND: Sarcoidosis is a well-described disease that can be associated with various malignancies; however, this correlation is still not fully clarified. AIM: To determine the clinical and histological features, demographic characteristics, and prognosis of patients diagnosed with paraneoplastic sarcoidosis (PS). METHODS: This observational cohort prospective study included all patients diagnosed as cutaneous sarcoidosis. All patients were monitored for therapeutic response, prognosis, and any associated diseases or malignancies...
May 20, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29774387/ultraviolet-radiation-induces-melan-a-expressing-cells-in-interfollicular-epidermis-in-wild-type-mice
#2
David A De Luca, Barbara Sterniczky, Susanne Kimeswenger, Dagmar Födinger, Agatha Schwarz, Thomas Schwarz, Christian Jantschitsch
Adult wild-type mice are not supposed to be proper models for ultraviolet radiation (UVR)-induced melanoma since melanocytes are confined to hair follicles and cannot be sufficiently reached by UVR. On the other hand, in mutated mouse models used for melanoma research limitations, including an altered immune system and selection of affected pathways, lead to tumors phenotypically quite different from naturally occurring melanomas. We compared the distribution of epidermal melanocytes in UVR and not-UVR-exposed wild-type C57BL/6 mice...
May 17, 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29774372/-optical-coherence-tomography-for-skin-pathologies
#3
REVIEW
J Welzel, S Schuh
Optical coherence tomography (OCT) has become established in routine diagnosis in dermatology only in the last few years. The reason is that the skin is a challenge for OCT as a strong scattering medium, because only a very small proportion of photons is reflected and can be used for imaging. In addition, in most cases a visual assessment or a biopsy is sufficient. Nevertheless, the main field of application in dermatology is the diagnostics of epithelial skin tumors. The OCT is suitable for the early recognition of small, clinically and light microscopically unspecific basal cell carcinomas as well as for the differential diagnosis of other tumors and precancerous lesions...
May 17, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29774221/magnetic-resonance-imaging-findings-for-differential-diagnosis-of-perianal-plexiform-schwannoma-case-report-and-review-of-the-literature
#4
Xue-Liang Sun, Ke Wen, Zhi-Zhong Xu, Xiao-Peng Wang
Plexiform schwannoma is an extremely rare variant of schwannoma, accounting for approximately 5% of cases. Due to the rarity and lack of typical symptoms, signs and radiological images, a definite diagnosis of plexiform schwannoma may not be made by clinicians prior to biopsy. In the present study, we report the first case (to our knowledge) of perianal plexiform schwannoma arising from the overlapped skin of the ischioanal fossa, and we propose an intratumorally nonenhanced circumferential capsule dividing the tumour into multiple homogeneously enhanced nodules as a magnetic resonance imaging feature to aid in the differential diagnosis of plexiform schwannoma from ancient schwannoma, cavernous haemangioma, liposarcoma and plexiform neurofibroma...
May 16, 2018: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29772963/simplifying-skin-disease-diagnosis-with-topical-nanotechnology
#5
David C Yeo, Chenjie Xu
A new study published in the journal Nature Biomedical Engineering1 documents a novel diagnostic technology that exploits topically applied nanotechnology to detect skin tissue biomarkers for diagnosis. This concept is demonstrated by noninvasively imaging connective tissue growth factor (CTGF) mRNA in abnormal scar cells, whole tissue, and animal models. In this commentary, we highlight the main findings and discuss their implications. Successful implementation in the clinic could give rise to self-applied, biopsy-free diagnostic technology and significantly reduce healthcare burden...
May 1, 2018: SLAS Technology
https://www.readbyqxmd.com/read/29772623/-a-case-of-seminal-vesicle-cyst-incidentally-diagnosed-during-rupture-of-abdominal-subcutaneous-abscess
#6
Shinya Somiya, Masahiro Tamaki, Shohei Fujikawa, Yuya Yamada, Yuki Kamiyama, Toshio Kanaoka
Seminal vesicle cyst is a rare disease and is often asymptomatic. We present a case of huge seminal vesicle cyst connected to the abdominal wall and observed as a subcutaneous abscess. An 89-year-old man presented with asymptomatic spontaneous rupture of the left lower abdominal subcutaneous abscess. Computed tomography (CT) showed a relatively low intensity cystic mass located in the Retzius' space just below the abscess, surrounding the right bladder wall laterally and connecting to the right seminal vesicle posteriorly...
April 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29772224/pharmacokinetics-and-skin-tolerability-of-intracutaneous-zolmitriptan-delivery-in-swine-using-adhesive-dermally-applied-microarray-adam
#7
Joe Nguyen, Hayley Lewis, Ashley Queja, Anh Ngoc Diep, Guillaume Hochart, Mahmoud Ameri
Adhesive Dermally-Applied Microarray (ADAM) is a new drug delivery system that uses microprojections (340 μm long) for intracutaneous drug self-administration. We formulated zolmitriptan, a well-accepted and commonly used migraine medication, for administration using ADAM. In vivo studies were conducted in female prepubescent Yorkshire pigs using ADAM 1.9 mg zolmitriptan, applied to the inner thigh and left in place for 1 hour. Pharmacokinetic studies showed that the ADAM 1.9 mg zolmitriptan delivered with high efficiency (85%) and high absolute bioavailability (77%)...
May 14, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29770208/case-report-polyarteritis-nodosa-or-complicated-henoch-schonlein-purpura-a-rare-case
#8
Sajad Hasanzadeh, Seyedeh Maryam Alavi, Elahe Masnavi, Maryam Rohani, Saeid Jokar
Background: Polyarteritis nodosa (PAN) is a vasculitis that affects medium sized arteries. PAN is a rare disease and requires a high vilgilance for diagnosis. For instance, PAN and Henoch-Schonlein purpura (HSP) have narrowing differential diagnosis. Here, we report a case of PAN. Case presentation : Our patient was a 65 year old woman that came to hospital due to abdominal pain and skin lesion on the right upper and right lower extremities. All rheumatologic tests were negative. A biopsy of the skin lesion was reported as mild hyperkeratosis, slight spongiosis with intact basal layer...
2018: F1000Research
https://www.readbyqxmd.com/read/29768670/patients-affected-by-a-new-variant-of-endemic-pemphigus-foliaceus-have-autoantibodies-colocalizing-with-myzap-p0071-desmoplakins-1-2-and-arvcf-causing-renal-damage
#9
A M Abreu-Velez, M S Howard, H Yi, A A Florez-Vargas
BACKGROUND: We have previously reported that about 30% of patients affected by a new variant of endemic pemphigus foliaceus (EPF) in El Bagre, Colombia (termed El Bagre-EPF or pemphigus Abreu-Manu) have systemic compromise. In the current study, we focused on studying autoreactivity to the kidney and its pathological correlations. AIM: To investigate patients with El Bagre-EPF for renal compromise. METHODS: We performed a case-control study, enrolling 57 patients with El Bagre-EPF and 57 controls from the endemic area, matched by age, sex, race, work activity, demographics and comorbidities...
May 16, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29766562/cutaneous-fibrolipomatous-hamartoma-report-of-2-cases-with-retrocalcaneal-location
#10
Ana Isabel Rodríguez Bandera, Drew K Saylor, Maria José Beato, Jeffrey North, Ilona J Frieden
Precalcaneal congenital fibrolipomatous hamartoma is an underreported benign entity that has been described in the literature under different names. We present two cases of unilateral fibrolipomatous hamartoma (FLH) appearing in a unique location: on the posterior aspect of the foot overlying the heel. We propose the term "FLH of the skin" as a more inclusive and less confusing term for this condition, thus allowing distinction with FLH arising from neural tissue. High-frequency ultrasonography appears to be a useful diagnostic tool that may avoid unnecessary biopsies for this condition...
May 15, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29765972/reflectance-confocal-microscopy-as-new-diagnostic-tool-in-folliculotropic-mycosis-fungoides
#11
Gabriella Fabbrocini, Caterina Mazzella, Mariateresa Cantelli, Antonello Baldo, Daniela Russo, Gaetano De Rosa, Giuseppe Monfrecola
We present a case of folliculotropic mycosis fungoides (FMF), a variant of cutaneous T-cell lymphoma which particularly affects hair follicles. FMF can imitate a wide variety of otherwise benign dermatoses, so it poses major diagnostic obstacles both for the dermatologist as well as the dermatopathologist. In our case, in vivo reflectance confocal microscopy (RCM) was very important for guiding the skin biopsy site selection. For this reason, RCM can reduce the number of unsuccessful histopathological examinations and increase the diagnostic accuracy for different skin dermatoses...
April 2018: Skin Appendage Disorders
https://www.readbyqxmd.com/read/29765963/alopecic-and-aseptic-nodules-of-the-scalp-first-report-in-south-america-and-second-in-america
#12
Cristián Fischer-Levancini, Matías Gompertz, Antonio Guglielmetti, Héctor Opazo
Alopecic and aseptic nodules of the scalp, also named pseudocysts of the scalp, are a relatively new, little-known, and for sure underdiagnosed disease. It affects mostly young men and is characterized by a solitary or a few dome-shaped nodules accompanied by nonscarring alopecia, deep inflammatory infiltration in the skin biopsy specimen, and, in most cases, granulomas. It has a good response to doxycycline, intralesional corticosteroids, or drainage/aspiration of the lesion. We present a case report and a summary of the published cases...
April 2018: Skin Appendage Disorders
https://www.readbyqxmd.com/read/29765945/atypical-fibroxanthoma-of-the-bulbar-conjunctiva-a-unique-case-describing-the-pathology-clinical-presentation-and-management
#13
Justin Kuiper, Ankit Shah, Rebecca Kuennen, Lynn Schoenfield
Background/Aims: Atypical fibroxanthoma is an uncommon tumor that usually occurs in the skin of the head and neck of the elderly with significant sun exposure. We describe a unique case featuring a rare ocular surface conjunctival tumor (atypical fibroxanthoma) and provide insight on its characteristic clinical features, surgical management, and histology. Methods: A 71-year-old male fisherman with no pertinent ocular history presented to an academic center with a rapidly enlarging bulbar conjunctival mass in the right perilimbal region for the past several months...
April 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29764847/a-mysterious-postoperative-rash
#14
Maria Chicco, George Filobbos, Nicholas Francis, Paul Ziprin
This case report describes the development of a rash in a patient admitted with large bowel obstruction secondary to carcinoma of the sigmoid colon. The patient underwent a Hartmann's procedure and right hemicolectomy for a metastatic deposit at the terminal ileum. On postoperative day 3, the patient developed a bullous haemorrhagic rash on the thighs, flanks and abdomen, associated with a sharp drop in platelet count. Suspicion of heparin-induced skin necrosis was raised, and prophylactic enoxaparin was switched to fondaparinux...
May 15, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29761072/sezary-syndrome-manifesting-as-posttransplant-lymphoproliferative-disorder
#15
Thanh-Phuong Afiat, Xiaohui Zhang, Hailing Zhang, Ernesto Ayala, Ling Zhang, Lubomir Sokol
Posttransplant lymphoproliferative disorders (PTLDs) of T-cell orgin are rare biologically heterogeneous diseases of mature lymphoid cells manifesting in immunosuppressed patients. Only a few cases of mycosis fungoides diagnosed post allogeneic hematopoietic cell transplant (alloHSCT) have been described so far. We present a patient with myelodysplastic syndrome (MDS) post matched unrelated donor alloHSCT who was on long-term immunosuppressive therapy due to graft versus host disease. Three years after an alloHSCT, she developed generalized erythroderma and peripheral blood lymphocytosis...
2018: Leukemia Research Reports
https://www.readbyqxmd.com/read/29760873/early-morphea-simulating-patch-stage-mycosis-fungoides-in-two-cases
#16
Hamid R Ghasemi Basir, Pedram Alirezaei, Aliasghar Rezanejad, Sajjad Daneshyar
Morphea is a skin disorder characterized by thickening of dermis and subcutaneous tissues and loss of adnexal structures. In the early inflammatory stage of morphea, diagnostic histological findings are absent and this may lead to confusion with other inflammatory dermatoses such as mycosis fungoides (MF). We report two cases of early stage morphea mimicking patchstage of MF. Histopathologic examination of biopsies obtained early in the disease course revealed lymphocytic epidermotropism arranged in small pautrier-like collections as well as linear arrangements in dermal- epidermal junction...
April 23, 2018: Dermatology Reports
https://www.readbyqxmd.com/read/29760739/antiarrhythmic-effects-of-carvedilol-and-flecainide-in-cardiomyocytes-derived-from-catecholaminergic-polymorphic-ventricular-tachycardia-patients
#17
R P Pölönen, K Penttinen, H Swan, K Aalto-Setälä
Mutations in the cardiac ryanodine receptor (RYR2) are the leading cause for catecholaminergic polymorphic ventricular tachycardia (CPVT). In this study, we evaluated antiarrhythmic efficacy of carvedilol and flecainide in CPVT patient-specific induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) carrying different mutations in RYR2. iPSC-CMs were generated from skin biopsies of CPVT patients carrying exon 3 deletion and L4115 or V4653F mutation in RYR2 and of a healthy individual. Ca2+ kinetics and drug effects were studied with Fluo-4 AM indicator...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29760622/skin-and-mucous-membranes-manifestations-of-dermatological-diseases-within-the-genital-area-in-females
#18
Katarzyna Plagens-Rotman, Renata Przybylska, Zygmunt Adamski, Magdalena Czarnecka-Operacz
Introduction: Lichen sclerosus et atrophicus (LSA) and an inversed type of psoriasis belong to a group of benign dermatoses usually located within the region of female external genitalia. The most common subjective symptoms reported by patients are itching, pain and changes in the color and structure of the skin. Aim: This paper presents 3 cases of patients suffering from selected dermatoses located within the external female genitalia treated at the Department of Dermatology, Poznan University of Medical Sciences...
April 2018: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/29756115/severe-decrease-in-spo-2-and-methemoglobinemia-following-subareolar-isosulfan-blue-administration-and-clinical-relevance
#19
Esra Yüksel, Dilek Duman, Levent Yeniay, Sezgin Ulukaya
The level of axillary lymph node involvement in breast cancer is a critical decision factor for adjuvant therapy and the most important indicator of prognosis and survival. Sentinel lymph node biopsy is a minimally invasive technique with low morbidity in axillary staging of breast cancer. Radiocolloid substances (Technetium-99m) and/or blue dyes such as methylene blue or isosulfan blue are used during sentinel lymph node biopsy. Isosulfan blue stain is frequently used in sentinel lymph node biopsy and rarely causes complications...
2018: Turkish Journal of Surgery
https://www.readbyqxmd.com/read/29756090/capsaicin-8-patch-reversibly-reduces-a-delta-fiber-evoked-potential-amplitudes
#20
Aikaterini Papagianni, Gabriela Siedler, Claudia Sommer, Nurcan Üçeyler
Introduction: The capsaicin 8% patch is a treatment option in patients with localized peripheral neuropathic pain. Better understanding of its mechanisms of action and knowledge on predictive biomarkers for a treatment response is warranted. Objectives: To use electrically evoked pain-related potentials for investigation of A-delta fiber conduction after capsaicin 8% patch treatment. Methods: We studied 11 healthy controls at the dorsal hand and the foot and 12 patients with neuropathic pain at the area affected by neuropathic pain before and 2 hours after application of a capsaicin 8% patch (Qutenza)...
March 2018: Pain Reports (Baltimore, Md.)
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