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اطلاعات دوره: 
  • سال: 

    1385
  • دوره: 

    9
  • شماره: 

    3 (پیاپی 37) ضمیمه 1
  • صفحات: 

    61-66
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    865
  • دانلود: 

    123
چکیده: 

Port-wine stain یک مالفورماسیون عروقی است که از لحاظ آسیب شناسی با اکتازی مویرگ های سطحی درم و از نظر بالینی با اریتم ماکولار مشخص می شود. همراهی Port-wine stain در یک اندام با تورم بافت نرم با یا بدون افزایش رشد استخوان سندرم Klippel-Trenaunay نامیده می شود. فاکوماتوزیس پیگمنتوواسکلاریس، همراهی Port-wine stain با اختلال های پیگمانتاسیون پوستی است.بیماری که در این جا معرفی می شود همراهی یک مورد سندرم Klippel-Trenaunay با نووس OTA دو طرفه در مردی 25 ساله است که می تواند در قالب فاکوماتوزیس پیگمنتوواسکولاریس تیپ II مطرح می شود که با چنین الگویی یافته ای نسبتا نادر است.

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بازدید 865

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نشریه: 

بینا

اطلاعات دوره: 
  • سال: 

    1381
  • دوره: 

    7
  • شماره: 

    4 (پی در پی 28)
  • صفحات: 

    364-368
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    2364
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

پیشینه و هدف: خال OTA عبارت از ضایعات ملانوز پیگمانته متعدد و اغلب یک طرفه در چشم و پوست می باشد. با توجه به گزارش موارد تغییر ماهیت بدخیمی در بیماران مبتلا به خال OTA، در این مقاله به معرفی یک مورد از آن به منظور شناخت اهمیت تشخیص و درمان زودهنگام موارد بدخیمی در این بیماران پرداخته شده است. معرفی بیمار: یک خانم سفید پوست 57 ساله با سابقه خال دو طرفه OTA با درد شدید چشم چپ مراجعه نمود. درد چشم چپ از 8 ماه قبل شروع شده بود. دید چشم چپ NLP و فشار آن 50 میلی متر جیوه بود و در سطح اسکلرا، ندول های سیاه و پیگمانته دیده می شد. در CT- اسکن اربیتال، در پشت گلوب چپ، توده پاتولوژیک با گرفتاری عصب بینایی دیده شد. بیمار تحت عمل exenteration چشم چپ قرار گرفت. گزارش آسیب شناسی حاکی از ملانون بدخیم بافت های چشمی و به هم ریختگی ساختار گلوب بود ولی پلک ها عاری از تومور بودند. این بیمار 4 سال قبل به علت از دست دادن دید چشم چپ و وجود ضایعه کورویید در اکوگرافی چشم چپ، با احتمال ملانون بدخیم کورویید پذیرش شده بود ولی رضایت به درمان نداده بود. نتیجه گیری و پیشنهاد: تشخیص و درمان زودهنگام این بیماران از پیشرفت ضایعه جلوگیری می کند و در بیماران مبتلا به خال OTA، معاینات دوره ای جهت تشخیص به موقع تغییر بدخیمی توصیه می گردد.

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نشریه: 

Dental Research Journal

اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    8
  • شماره: 

    1
  • صفحات: 

    52-55
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    277
  • دانلود: 

    0
چکیده: 

Nevus of OTA is a condition wherein the typical pattern of the bluish black pigmentation is noticed along with the cutaneous distribution of the trigeminal nerve. This condition is most prevalent in Japanese population but comparatively rare among Indians. We report a case of 23-year-old female presented with unilateral pigmented areas over the skin of forehead, malar area, ear and periorbital area.Blackish-blue pigmented areas were also noticed on the sclera. Brownish-black diffuse pigmented areas were also noticed on the buccal mucosa of the same side. The presence of pigmentation on the skin over pinna and oral pigmentation made our case a rare incidence. Oral pigmentations associated with nevus of OTA especially on the buccal mucosa have rarely been reported in the past.

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بازدید 277

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    14
  • شماره: 

    2 (56)
  • صفحات: 

    68-70
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    340
  • دانلود: 

    0
چکیده: 

A 24-year-old woman presented with asymptomatic hyperpigmented bilateral patches on her temples, eyelids and forehead since birth. Furthermore, the patient had a congenital grey patch, compatible with Mongolian spot, on her buttock. She had no vascular or other cutaneous lesion. Histopathologic examination revealed bipolar dendritic melanocytes dispersed in a ribbon-like pattern between the collagen fibers and around the neurovascular bundles of the dermis. As far as we know, this is the first case of bilateral “congenital” nevus of OTA in association with a Mongolian spot reported in a patient.

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بازدید 340

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اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    3
  • شماره: 

    4 (10)
  • صفحات: 

    19-26
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    358
  • دانلود: 

    0
چکیده: 

This paper investigates the relationship between the Lagos Megacity and OTA Township, a small township on its periphery. The study examines linkages between and Lagos in terms of growth, urban development as well as mobility. 553 questionnaires were administered to household heads across the 12 residential districts of OTA Township. Survey was carried out by systematic random sampling. Classified traffic counts were also taken at strategic locations along the four main axial roads in OTA. The data collected were analysed with descriptive and inferential statistical methods including cross-tabulation and correlation analysis. Findings of the research have shown that the proportion of inter-city traffic from OTA directed towards Lagos is about 48% of tOTAl inter-city traffic generated. More than 40% of OTA residents migrated from Lagos and still commute daily to the megacity. The paper concludes by recommending strategies for better synergies between OTA Township and the Lagos megacity. These include the implementation of integrated master planning, effective environmental management and traffic policies for the township as well.

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بازدید 358

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نویسندگان: 

FARAJI BAGHTASH H. | MONFAREDI KH.

اطلاعات دوره: 
  • سال: 

    2019
  • دوره: 

    15
  • شماره: 

    3
  • صفحات: 

    321-329
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    132
  • دانلود: 

    0
چکیده: 

A novel active feedback frequency compensation scheme is presented in this work. Based on the proposed technique, an amplifier with two main poles in its frequency bandwidth can be easily compensated by introducing a pole-zero pair in a local feedback. The proposed method is mathematically analyzed and then based on the derived formulations, a design procedure is established. The capability of the proposed technique is examined considering a well-known two-stage amplifier, considering just a trivial modification on its input stage. To gain an analogous and fair insight, the performance of the proposed structure is compared with that is of the optimally designed millercompensated two-stage amplifier. The post-layout simulations are accomplished with TSMC 180nm CMOS standard technology. The Spectre post-layout simulations show that the proposed structure outperforms the traditional structure in terms of power consumption and gain bandwidth product. The robustness of the design is checked with Monte Carlo simulations.

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بازدید 132

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
نویسندگان: 

نشریه: 

Scientia Iranica

اطلاعات دوره: 
  • سال: 

    2021
  • دوره: 

    28
  • شماره: 

    -
  • صفحات: 

    3333-3341
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    22
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 22

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نویسندگان: 

SALEHI MILAD | Moharrami Alireza | Hoseini Zare Nima | Moazen Jamshidi Mir Mansour | MORTAZAVI SEYED MOHAMMAD JAVAD

اطلاعات دوره: 
  • سال: 

    2022
  • دوره: 

    8
  • شماره: 

    1
  • صفحات: 

    27-30
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    75
  • دانلود: 

    0
چکیده: 

Background: With the rising number of older adults suffering from osteoporosis, trochanteric fractures are on the rise. The hip fracture is perhaps the most prevalent problem orthopedic surgeons deal with. The goal of treating a spinal cord injury is to minimize surgical and medical complications in order to restore function. The key to these goals is achieving a stable reduction and fixation of the fracture, allowing immediate mobilization. Many methods are available for reduction and internal fixation. Despite this, complications remain common. In order to begin mobilization as early as possible after a trochanteric fracture, a stable internal fixation is generally accepted as being necessary. . .

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اطلاعات دوره: 
  • سال: 

    2010
  • دوره: 

    24
  • شماره: 

    3
  • صفحات: 

    163-168
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    286
  • دانلود: 

    0
چکیده: 

Intracranial invasion of cellular blue nevus (CBN) from the skin is extremely rare and such a condition with malignant transformation is even rarer. A case of meningeal melanoma with malignant transformation which was derived from an OTA nevus is presented in this report.A21-year-old man with a neurocutaneous syndrome since childhood was referred with headache and mild left hemiparesia. CT scan and MRI demonstrated intracranial lesions and conjunctival biopsy leads to the pathologic diagnosis of blue nevus.Thereafter his parietal lesion was operated by craniotomy with tOTAl gross excision.On histopathological examination, diagnosis of malignant melanoma was confirmed.Approximately 2 months after radiotherapy and chemotherapy, he afflicted to diplopia and blurred vision on the leftside due to enlargement of orbital and cavernous sinus lesion. Following one year follow-up, he was survived and thrived with diffuse leptomeningeal nodular enhancement in favor of melanoma dissemination.Primary intracranial melanomas are though rare, but it should be suspected especially in the presence of periorbital blue nevus or nevus of OTA. Moreover, although CBN is considered benign, scalp or periorbital CBN has the potential for intracranial invasion and malignant transformation.

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بازدید 286

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نویسندگان: 

GRASSO A.D.

اطلاعات دوره: 
  • سال: 

    2006
  • دوره: 

    53
  • شماره: 

    10
  • صفحات: 

    1044-1048
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    133
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 133

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