نتایج جستجو برای: hyperpigmented patch
تعداد نتایج: 42367 فیلتر نتایج به سال:
R etinoma is a benign, elevated, gray, translucent retinal mass with cottage cheese–like calcification and hyperpigmented retinal pigment epithelium. Histopathological features includeabundant fleurettes and nonproliferative cells. We report a case in which an underlying retinoma was revealed by collapse and massive vitreous dispersion of the overlying unilateral retinoblastoma after 1 cycle of...
KEY CLINICAL MESSAGE A 55-year-old man of dark complexion presented with multiple extensive swellings over the chest, right upper arm, and left shoulder for 10 years. Swellings were hyperpigmented, firm, and intensely pruritic especially over the chest region. The swellings progressed in size, extended, and developed satellite lesions over its 10 years history.
Dyschromatosis universalis hereditaria (DUH) is a rare autosomal dominant inherited dermatosis which usually appears during childhood and is characterized by dyspigmentation, with both hypopigmented and hyperpigmented macules. We report a case of DUH with unexplained childhood-onset renal failure. The association between DUH and renal failure is yet to be proven by further studies.
CLINICAL PRESENTATION A 42-year-old man presented with a 5-year history of an asymptomatic slow-growing papule on the left scapular region. The physical examination revealed a well-defined, 1.2-cm diameter, firm, domeshaped papule with a white-pinkish center, peripheral small papules with a pearly appearance, and a hyperpigmented outer rim (Fig 1). The initial clinical impression suggested basa...
INTRODUCTION Sporotrichosis, or rose gardener’s disease, is caused by the dimorphic fungus Sporothrix schenckii and is the most common subcutaneous mycosis. The disease typically occurs in one of 3 main forms: lymphocutaneous (most commonly), fixed cutaneous, or disseminated cutaneous. We report an unusual case of Sporothrix, presenting in a 67-yearold man with painful, hyperpigmented fingernails.
To evaluate the whitening effect of black tea water extract (BT), BT was topically applied to artificially hyperpigmented spots on the back skins of brown guinea-pigs (weight: 450~500 g) induced by 1,500 mJ/ cm(2) of ultraviolet B (UVB) irradiation. The test compounds of 30 μl were applied twice a day, six days a week, for four weeks. The artificially hyperpigmented spots were divided into 5 gr...
یکی از مهم ترین عوامل موثر در وقوع آتش سوزی در مناطق خشک، پوشش گیاهی و شرایط آب و هوایی منطقه می باشد. منطقه حفاظت شده باغ شادی یکی از مناطق جنگلی استان یزد بوده که بیش ترین آتش سوزی های استان در آن رخ داده است. به منظور بررسی عوامل موثر بر وقوع آتش سوزی در این منطقه از روش تحلیل سلسله مراتبی (ahp) استفاده شد و معیارهای فیزیوگرافی شامل سه زیرمعیار ارتفاع، شیب و جهت شیب، اقلیم شامل دو زیرمعیار د...
A new multiple C-slotted microstrip patch antenna is proposed in the present study. A patch antenna is a wide-beam narrowband antenna. The microstrip patch antenna consists of a very thin metallic strip (patch) placed a small fraction of a wavelength above a ground plane. The patch can be designed in any possible shape and normally made of conducting materials such as copper or gold. This study...
Abstract A 15-year-old girl presented with an 8-year history of a gradually enlarging, irregular, nonconfluent hyperpigmented patch on her left flank. The lesion demonstrated area increased hair growth, did not cross the midline and was mildly pruritic but otherwise asymptomatic. Another pigmented patch, present since birth, also noted right lower back consistent café-au-lait macule. Medical in...
Infrared radiation is increasingly and uncritically used for cosmetic and wellness purposes, despite the poorly understood biologic effects of such treatments on humans. In the present study, we investigated the effects of infrared radiation on collagen and elastin production in dermal fibroblasts, as well as the clinical and histopathologic effects of infrared radiation on photo-aged facial sk...
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