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So Min Lyu, Ju Yeon Wu, Ji Yeon Byun, Hae Young Choi, Sang Hee Park, You Won Choi
BACKGROUND: The role of the phosphatidylinositol-3 kinase signaling pathway in the development of acral melanoma has recently gained evidence. Phosphatase and tensin homologue (PTEN), one of the key molecules in the pathway, acts as a tumor suppressor through either an Akt-dependent or Akt-independent pathway. Akt accelerates degradation of p53. OBJECTIVE: We assessed the expression of PTEN, phospho-Akt (p-Akt), and p53 by immunohistochemistry in benign acral nevi, acral dysplastic nevi, and acral melanomas in the radial growth phase and with a vertical growth component...
October 2016: Annals of Dermatology
Teresa Deinlein, Rainer Hofmann-Wellenhof, Iris Zalaudek
No abstract text is available yet for this article.
November 2016: Journal of the American Academy of Dermatology
Aikaterini Lavrentaki, Alessandro Paluzzi, John A H Wass, Niki Karavitaki
Acromegaly is a rare condition necessitating large population studies for the generation of reliable epidemiological data. In this review, we systematically analysed the epidemiological profile of this condition based on recently published population studies from various geographical areas. The total prevalence ranges between 2.8 and 13.7 cases per 100,000 people and the annual incidence rates range between 0.2 and 1.1 cases/100,000 people. The median age at diagnosis is in the fifth decade of life with a median diagnostic delay of 4...
October 14, 2016: Pituitary
Sang Yub Kim, Sook Jung Yun
Malignant melanoma is a rare disease in Asians but potentially the most aggressive form of skin cancer worldwide. It can occur in any melanocyte-containing anatomic site. Four main cutaneous melanoma subtypes are recognized: lentigo maligna melanoma, superficial spreading melanoma, acral lentiginous melanoma (ALM), and nodular melanoma. Generally, excessive exposure to ultraviolet (UV) radiation increases the risk of melanoma. The exception is ALM, which is the most common melanoma subtype in Asians and is not associated with UV radiation...
September 2016: Chonnam Medical Journal
Hatice Ferhan Komurcu, Emel Basar, Orhan Kucuksahin, Ebru Uz, Huban Sibel Orhun Yavuz, Omer Anlar
We report a case with calciphylaxis very rarely presenting with bilateral optic neuropathy, acral gangrene and visceral ischaemia. Bilateral papilloedaema was found in a 43 year-old female with chronic renal failure. Acral dry gangrene was observed. Pathological examination of her amputated thumb revealed calcification, thrombi, obstructive endovascular fibrotic areas in the walls of arteries. She was diagnosed with calciphylaxis. Bilateral optic neuropathy was defined secondary to calciphylaxis. Abdominal computerized tomography revealed prominent calcifications in mesenteric, spleen and renal arteries...
October 2016: JPMA. the Journal of the Pakistan Medical Association
Silvia Potenziani, Danielle Applebaum, Bhuvaneswari Krishnan, Carolina Gutiérrez, A Hafeez Diwan
Cowden Syndrome (CS) is an uncommon autosomal dominant multiorgan/system genodermatosis. It is characterized by the development of multiple hamartomas of endodermal, mesodermal and ectodermal origin, an increased lifetime risk of breast, thyroid, endometrial, and other cancers and an identifiable germline mutation. Mucocutaneous hamartomas are the most common lesions seen and mainly include facial trichilemmomas, oral mucosal papillomas, and benign acral keratoses. Herein, we report a case of a 63-year-old Caucasian male with a long-established diagnosis of CS and history of thyroid cancer, colonic polyps, and innumerable trichilemmomas, seborrheic keratoses, squamous papillomas, and non-melanoma skin cancers excised in the past...
September 28, 2016: Journal of Cutaneous Pathology
A Fonia, N Bhatt, A Robson, C T C Kennedy
Acral pseudolymphomatous angiokeratoma of children (APACHE) is a condition that was first described in 1990 in a group of children, but has since been described in adults. We present the cases of identical twin patients aged 40 years. The first brother presented with an 8-year history of itchy lesions over the left ankle and the insteps of both feet. After a diagnostic biopsy, he was treated with potent steroids under occlusion for 8 weeks, which resulted in flattening of the lesions and resolution of the pruritus...
October 2016: Clinical and Experimental Dermatology
Mansi Patel, HyunJi Boo, Suganthi Kandasamy, Dhagash Patel, Anthony Iorio
INTRODUCTION AND OBJECTIVES: Melanoma is one of the most common primary malignant tumors arising in the lower extremity. It is crucial to diagnose melanoma as quickly and as efficiently as possible for a better prognosis. The use of dermoscopy is helpful in diagnosing such conditions. Dermoscopy is a non-invasive, in-vivo technique primarily used in the examination of pigmented skin lesions. This procedure allows the visualization of subsurface skin structures in the epidermis, dermoepidermal junction, and upper dermis - structures not visible to the naked eye...
September 2016: Journal of the American Podiatric Medical Association
Kyeong-Tae Lee, Eun-Ji Kim, Dong-Youn Lee, Jung-Han Kim, Kee-Taek Jang, Goo-Hyun Mun
BACKGROUND AND OBJECTIVES: This study aimed to evaluate treatment outcomes of acral melanoma (AM) based on the excision margin. METHODS: A retrospective cohort study was conducted for patients with primary AM, analyzing recurrence rates, local and in-transit recurrence-free survival (LITRFS), disease-free survival (DFS), and melanoma-specific survival (MSS). RESULTS: Data from 129 patients of AM were analyzed. In 53 patients with thin AM (thickness ≤1 mm), neither recurrence nor mortality occurred regardless of whether the excision margin was >1 cm or not...
September 19, 2016: Journal of Surgical Oncology
Jürg Hafner
This review presents a closer look at four diseases which are probably closely related to one another pathophysiologically: (a) calciphylaxis (distal pattern); (b) calciphylaxis (proximal pattern); (c) Martorell hypertensive ischemic leg ulcer; (d) calciphylaxis with normal renal and parathyroid function (synonym: eutrophication). The four diseases have largely the same risk factors: (1) arterial hypertension, (2) diabetes mellitus (types 1 and 2), (3) secondary or tertiary hyperparathyroidism (in end-stage kidney disease) and (4) oral anticoagulation with vitamin K antagonists...
September 14, 2016: Dermatology: International Journal for Clinical and Investigative Dermatology
Joshua Mandrell, Christina L Kranc
Levamisole is an immunomodulatory drug that was previously used to treat various medical conditions, including parasitic infections, nephrotic syndrome, and colorectal cancer. Over the last few years, increasing amounts of levamisole have been used as an adulterant in cocaine. Levamisole-cut cocaine has become a concern because it is known to cause a necrotizing purpuric rash, autoantibody production, and life-threatening leukopenia. Mixed histologic findings of vasculitis and thrombosis are characteristic of levamisole-induced purpura...
August 2016: Cutis; Cutaneous Medicine for the Practitioner
Y W Yeo, H H Oon, J S Lee, J Y Pan, Y J Mok, S K Ng
Acral pseudolymphomatous angiokeratoma of children (APACHE) is a rare form of cutaneous pseudolymphoma characterized byangiomatous papules with a predilection for the acral regions of children. Classically, a dense dermal lymphocytic infiltrate composed of both T and B cells is seen in histological specimens, together with prominent vessels lined by plump endothelial cells. Increasing evidence suggests that this condition is neither necessarily acral, pseudolymphomatous, nor angiokeratomatous. It may not always be a pediatric disease...
2016: Dermatology Online Journal
T E Warkentin, M Pai
We thank Wada and colleagues for commenting on our 'Forum' article [1] which focused on the pathophysiology of microvascular thrombosis associated with acute disseminated intravascular coagulation (DIC), particularly the subset of patients with critical illness complicated by symmetrical peripheral gangrene (SPG), a distinct syndrome of acral (distal extremity) limb ischemic necrosis despite palpable (or Doppler-identifiable) arterial pulses [2]. This article is protected by copyright. All rights reserved.
September 8, 2016: Journal of Thrombosis and Haemostasis: JTH
Angel Fernandez-Flores, David S Cassarino
Acral lentiginous melanoma is a rare variant of melanoma that is associated with a relatively low survival rate. The latter is partly due to the advanced stage in which the tumor is usually diagnosed. The diagnostic delay is mainly due to difficulties in identifying the very early histopathological signs of acral melanoma. The current article is a review of diagnostic clues, concepts, and definitions from the literature, as well as illustrating examples from our own archives. We have sought to provide an article that can be easily consulted in difficult cases of acral lentiginous melanoma...
August 20, 2016: Annals of Diagnostic Pathology
Junqian Zhang, Christopher J Miller, Joseph F Sobanko, Thuzar M Shin, Jeremy R Etzkorn
BACKGROUND: Atypical intraepidermal melanocytic proliferation (AIMP) is a histopathologic diagnosis with uncertain malignant potential and presents a surgical management dilemma for clinicians. OBJECTIVE: To identify the associated clinical and histopathologic factors and the frequency of diagnostic change to melanoma after conventional excision of AIMP. METHODS: Retrospective cross-sectional study of 306 AIMPs treated by conventional excision...
October 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Brea Prindaville, Tony Nguyen, Amy J Nopper
No abstract text is available yet for this article.
September 2016: Pediatric Dermatology
Chengfang Zhou, Xiang Chen, Weiqi Zeng, Cong Peng, Gang Huang, Xian'an Li, Zhengxiao Ouyang, Yi Luo, Xuezheng Xu, Biaobo Xu, Weili Wang, Ruohui He, Xu Zhang, Liyang Zhang, Jie Liu, Todd C Knepper, Yijing He, Howard L McLeod
Both preclinical and epidemiology studies associate β-adrenoceptors-blockers (β-blockers) with activity against melanoma. However, the underlying mechanism is still unclear, especially in acral melanoma. In this study, we explored the effect of propranolol, a non-selective β-blocker, on the A375 melanoma cell line, two primary acral melanoma cell lines (P-3, P-6) and mice xenografts. Cell viability assay demonstrated that 50μM-400μM of propranolol inhibited viability in a concentration and time dependent manner with an IC50 ranging from 65...
August 25, 2016: Oncotarget
Yu Wang, Yinjun Zhao, Shuangge Ma
BACKGROUND: Melanoma accounts for the majority of skin cancer deaths. It has over thirty different subtypes. Different races have been observed to differ in multiple aspects of melanoma. METHODS: SEER (Surveillance, Epidemiology, and End Results) data on six major subtypes, namely melanoma in situ (MIS), superficial spreading melanoma (SSM), nodular melanoma (NM), lentigo maligna melanoma (LMM), acral lentiginous melanoma malignant (ALM), and malignant melanoma NOS (NOS), were analyzed...
2016: BMC Cancer
Andrea Giustina
Diagnostic delay of acromegaly is still very relevant (6-8 years on average) without substantial changes in last twenty years. Clinical impact of this diagnostic delay is significant: tumor growth (2/3 of the patients at diagnosis bear a pituitary macroadenoma), development of irreversible complications (arthropathy, sleep apnea) and in all increased mortality. Reasons for this delay are related to the disease itself (facial and acral changes are very slow and subtle) but also to medical unawareness. Simple tools based on a few sufficiently sensitive and specific signs and symptoms which can trigger the diagnostic suspect would be useful in clinical practice...
August 2016: Recenti Progressi in Medicina
Kumar Parimalam, Jeyalakshmidevi Namasivayam, Subha Ramasamy, Suganthy Valavan
No abstract text is available yet for this article.
July 2016: Indian Dermatology Online Journal
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