• Title/Summary/Keyword: Fat necrosis

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MR Imaging and Histological Findings of Experimental Cerebral Fat Embolism in Cats

  • Park Byung-Rae;Ko Seong-Jin;Kim Hwa-Gon
    • Biomedical Science Letters
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    • v.10 no.3
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    • pp.285-291
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    • 2004
  • To determine the magnetic resonance (MR) imaging findings and natural history of cerebral fat embolism in a cat model, and to correlate the MR imaging and histologic fmdings. Intemel carotid artery of 11 cats was injected with 0.1 ml of triolein. T2-weighted, T1-weighted and Gd-enhanced T1-weighted images were obtained serially for 2 hours, 1 days, 4 days, 1 week, 2 weeks and 3 weeks after embolization. Any abnormal signal intensity was evaluated. After MR imaging at 3 weeks, brain tissue was obtained for light microscopic (LM) examination using hematoxylin-eosin (HE) and Luxol fast blue staining, and for electron microscopic examination. The LM examination with HE staining revealed normal histological findings in the greater part of an embolized lesion. Cystic change was observed in the gray matter of 8 cats, while in the gray and white matter of 3 cats. At LM examination, Luxol fast blue, staining demonstrated demyelination around the cystic change occurring in the white matter, and EM examination of the embolized cortex revealed sporadic intracapillary fat vacuoles (n=11) and disruption of the blood-brain barrier (n=4). Most lesions were normal, however, and perivascular interstitial edema and cellular swelling were mild compared with the control side. The greater part of an embolized lesion showed reversible findings at MR and histological examination. Irreversible focal necrosis was, however, observed in gray and white matter at weeks 3.

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Walled-off Pancreatic necrosis in a Dog

  • Hwang, Tae-sung;Park, Su-jin;Lee, Jae-hoon;Jung, Dong-in;Lee, Hee Chun
    • Journal of Veterinary Clinics
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    • v.35 no.4
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    • pp.146-149
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    • 2018
  • A 7-year-old, castrated, male Maltese dog presented with hyporexia and depression for 3 days. Elevated serum amylase, lipase activities, and liver enzyme values were found upon blood examination. An abdominal mass was seen on radiographs caudal to the gastric body in the left middle abdomen. In the left middle abdomen, abdominal ultrasonography also revealed a massive, irregularly marginated, heterogeneous mass of unknown origin, and in the right cranial abdomen, heterogeneously hypoechoic pancreatic tissue and hyperechoic change of adjacent mesenteric fat were observed. Contrast-enhanced computed tomography showed an irregular contour of the left pancreatic limb as well as heterogeneously enhanced parenchyma. A low-attenuating peripancreatic fluid collection with a thin and irregular wall was also seen. Based on these findings, an atypical pancreatic abscess with necrotizing pancreatitis which manifested as walled-off necrosis was suspected. The mass was excised, and the pancreatic abscess was confirmed by histopathologic examination. No complications were found in the patient after two months of follow-up examination.

THE USE OF A VARIETY OF INTRAORAL FLAPS IN RECONSTRUCTION OF INTRAORAL SOFT TISSUE DEFECTS (구강내 연조직 결손 재건을 위한 다양한 구내피판의 이용)

  • Kim, Young-Kyun;Yeo, Hwan-Ho
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.19 no.3
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    • pp.243-249
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    • 1997
  • The purpose of this study is to describe the clinical availability of a variety of intraoral local flaps in reconstruction of oral soft tissue defects, Forty patients with oral soft tissue defects were treated by tongue, buccinator, palatal, labial, facial artery musculomucosal, buccal fat pad, and masseter muscle crossover flap. Total 43 intraoral flaps were used to reconstruct a variety of intraoral soft tissue defects, such as oronasal fistula, oroantral fistula, traumatic deformities and other. The age of patients ranged from 7 to 72 years, with mean age of 39.6 years. Follow up period ranged from 2 to 66 months, mean follow up period of 21.6 months. There were 9 complications, of which four were partial necrosis, three infections, one total necrosis, and 1 speech problem. Except for total necrosis, most of the recipient sited healed uneventually without severe morbidity. We consider that a variety of intraoral local flaps can be available for reconstruction of small of moderate large intraoral soft tissue defects.

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Delayed Radionecrosis of the Larynx (지연성 후두방사선괴사에 대한 고찰)

  • 홍기환;김연우;전희석;양윤수
    • Korean Journal of Bronchoesophagology
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    • v.8 no.1
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    • pp.75-80
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    • 2002
  • Radiation therapy is an effective treatment modality for malignant disease of the head and neck, but it is not without risk and complication. Response of the larynx to radiotherapy varies from mild erythema to severe inflammation with edema and induration. possibly leading to necrosis of cartilage. These changes are due to an inflammatory reaction characterized by infiltration of polymorphonuclear leukocytes, vascular thrombosis, and obliteration of lymphatic channels. Late changes consist of telangiectasia of the skin, alopecia, loss of subcutaneous fat, degenerative changes in the connective tissues. But, radiation necrosis of laryngeal cartilage is an uncommon complication and it is a devastating process for which further necessitates surgical treatment. It is generally agreed that the only treatment for patient not responding to conservative measures is a total laryngectomy. We experienced 4 cases of delayed radionecrosis of the larynx who underwent radiation therapy for glottic cancer and hypopharyngeal cancer. We report these cases with review of literature.

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Protective Effect of Korean Red Ginseng against Oxidative Damage by Carbon Tetrachloride in Rat (흰 쥐에서 사염화탄소에 의한 산화적 손상에 대한 홍삼의 방어효과)

  • 위재준;허종남;김만욱;강대영
    • Journal of Ginseng Research
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    • v.20 no.2
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    • pp.154-158
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    • 1996
  • To investigate the protective effect of Korean red ginseng (RG) against oxidative damage, rats were intoxicated by carbon tetrachloride and liver tissues and blood were taken and analyzed histopathologically and biochemically. Light microscopy of the liver showed that RG prevented the necrosis of hepatocytes remarkably and reduced the change of fat. RG increased the capability for serum to suppress oxygen radical in the generating system. It is suggested that RG enhanced the antioxidative potential of the body against $CCl_4$, which would prevent the necrosis of hepatocytes in vivo.

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Rare complication of skin necrosis after endoscopic debridement and cutaneo-fascial suture for a massive Morel-Lavallée lesion in Korea: a case report

  • Youngmin Kim;Jayun Cho;Myung Jin Jang;Kang Kook Choi
    • Journal of Trauma and Injury
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    • v.36 no.3
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    • pp.304-309
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    • 2023
  • A Morel-Lavallée lesion (MLL) is a pathologic fluid collection within an abnormally formed space, resulting from an internal degloving injury between the muscle fascia and subcutaneous fat layer. Due to its resistance to conservative treatments such as drainage or compression dressing, various therapeutic methods have been developed for MLL. However, no standardized guidelines currently exist. Recently, endoscopic debridement and cutaneo-fascial suture (EDCS) has been introduced for the treatment of MLL, particularly for large lesions resistant to conservative approaches. While this procedure is known to be effective, limited reports are available on potential complications. The authors present a case of skin necrosis following EDCS for a massive MLL.

Obesity and Insulin Resistance in Childhood (소아에서의 비만과 인슐린 저항성)

  • Choi, Kwang Hae
    • Journal of Yeungnam Medical Science
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    • v.29 no.2
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    • pp.73-76
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    • 2012
  • More and more children are becoming obese and overweight due to several factors that include a high energy density in the diet (a high fat intake) and low energy expenditure. Consequently childhood obesity is becoming a significant health problem. Fat tissue releases many cytokines such as resistin, tumor necrosis factor-${\alpha}$, leptin, interleukin-6. These adipocytokines induce obesity-related insulin resistance. Insulin resistance is a key component of obesity-related metabolic problems such as hypertension, type 2 diabetes mellitus, dyslipidemia, non-alcoholic steatohepatitis, acanthosis nigricans and polycystic ovarian syndrome. This review article focused on insulin resistance and its related metabolic diseases.

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Chronic Infection and Nodule Formation following Deoxycholate Injection

  • Shahid, Shahab;Al-Hassani, Fawaz
    • Archives of Plastic Surgery
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    • v.49 no.3
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    • pp.315-318
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    • 2022
  • Aqualyx (Marllor International Ltd, Rimini, Italy) was originally developed in Italy by Professor Pasquale Motolese and has been commercially available since 2009. It is a deoxycholate, aqueous gelatinous solution mixed with saline and buffering compounds. It is the only drug approved by the European Union for the reduction in localized fat. Aqualyx is sold exclusively to doctors and nurses trained in intralipotherapy. In the case of our patient, the product administered was advertised as Aqualyx, but was not administered by a trained health professional and was administered too superficially. The patient developed severe pain following the injection and was unable to sit for several weeks. There was localized skin necrosis, and palpable collections where the injection was administered. Our initial suspicion was development of an abscess or hematoma. To characterize further, we arranged an ultrasound scan that showed a "superficial hypoechoic lesion" but no deeper infection or spread. The numerous painful nodules ruptured onto the skin surface, resulting in purulent and bleeding lesions. This case demonstrates the importance of appropriate training and competence in performing cosmetic procedures including injections and fat dissolving treatments.

Surgical Management of Bisphosphonate Related Osteonecrosis of the Jaw Using Pedicled Buccal Fat Pad Flap (비스포스포네이트 연관 악골 괴사증 환자에서 유경 협부 지방 피판을 이용한 치료)

  • Lee, Jang-Ha;Kim, Min-Keun;Kim, Seong-Gon;Park, Young-Wook;Park, Sang-Wook;Park, Young-Ju
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.35 no.3
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    • pp.174-177
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    • 2013
  • Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a disease characterized by jaw necrosis and delayed wound healing in patients who had received bisphosphonates. Buccal fat pad (BFP) can be used as a pedicled flap in the posterior region of the oral cavity. BFP pedicle flap needs simple surgical technique and it shows less donor site morbidity and aesthetic problem than other vascularized flap. BFP pedicled flap was fed by 3 arteries-facial, internal maxillary, and transverse facial artery. Osteomyelitis was generally related with poor blood supply. Thus, rich blood supply of BFP pedicle flap can have a potential advantage to BRONJ patients. In this case report, we presented 3 BRONJ patients treated by BFP pedicle flap after sequestrectomy.

High Hydrostatic Pressure Extract of Red Ginseng Attenuates Inflammation in Rats with High-fat Diet Induced Obesity

  • Jung, Sunyoon;Lee, Mak-Soon;Shin, Yoonjin;Kim, Chong-Tai;Kim, In-Hwan;Kim, Yangha
    • Preventive Nutrition and Food Science
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    • v.20 no.4
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    • pp.253-259
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    • 2015
  • Chronic low-grade inflammation is associated with obesity. This study investigated effect of high hydrostatic pressure extract of red ginseng (HRG) on inflammation in rats with high-fat (HF) diet induced obesity. Male, Sprague-Dawley rats (80~110 g) were randomly divided into two groups, and fed a 45% HF diet (HF) and a 45% HF diet containing 1.5% HRG (HF+HRG) for 14 weeks. At the end of the experiment, the serum leptin level was reduced by the HRG supplementation. The mRNA expression of genes related to adipogenesis including peroxisome proliferator-activated receptor-gamma and adipocyte protein 2 was down-regulated in the white adipose tissue (WAT). The mRNA levels of major inflammatory cytokines such as tumor necrosis factor-${\alpha}$, monocyte chemoattractant protein 1, and interleukin-6 were remarkably down-regulated by the HRG in WAT. These results suggest that HRG might be beneficial in ameliorating the inflammation-associated health complications by suppressing adipogenic and pro-inflammatory gene expression.