Benign symmetric lipomatosis (Madelung’s disease) with concomitant incarcerated femoral hernia: A case report

BACKGROUND Benign symmetric lipomatosis(BSL)was first described by Brodie in 1846 and defined as Madelung’s disease by Madelung in 1888.At present,about 400 cases have been reported worldwide.Across these cases,surgical resection remains the recommended treatment.Here we report a case of neck BSL with concomitant thick fatty deposit in the inguinal region,which concealed the signs of a right incarcerated femoral hernia.CASE SUMMARY A 69-year-old male patient was admitted to our hospital with“abdominal pain,abdominal distension,nausea-vomiting and difficult defecation for half a month”.Moreover,he had a mass in the right inguinal region for more than 10 years.An egg-sized neck mass also developed 15 years ago and had developed into a full neck enlargement 1 year later.In addition,the patient had a history of heavy alcohol consumption for more than 40 years.With the aid of computerized tomography scan,the patient was diagnosed with BSL and a low intestinal mechanical obstruction caused by a right inguinal incarcerated hernia.Under general anesthesia,right inguinal incarcerated femoral hernia loosening and tension-free hernia repair was performed.However,this patient did not receive BSL resection.After a 1-year follow-up,no recurrence of the right inguinal femoral hernia was found.Moreover,no increase in fat accumulation was found in the neck or other areas.CONCLUSION Secretive intraperitoneal fat increase may be difficult to detect,but a conservative treatment strategy can be adopted as long as it does not significantly affect the quality-of-life.

Benign symmetric lipomatosis of the knees

Benign symmetric lipomatosis（BSL） is a rare disease characterized by the presence of multiple, symmetric and nonencapsulated fat masses in the face. neck and other areas. It is commonly seen in middle-aged Caucasian Mediterranean males, while its etiology is still not clear. The majority of the patients with BSL have a history of alcohol abuse and hepatopathy. BSL of the limbs is very rare. This article reports a unique case of a 60-year-old Chinese woman with involvement of the knees confirmed by the results of magnetic resonance imaging（MR1） and histopathology, which was not described previously in published literatures.

A case of benign symmetrical lipomatosis

A51-year-old man from Inner Mongolia, China was admitted to the Department of General Surgery,Beijing Shijitan Hospital on November 28, 2011, with massive thickening of the neck （Figure I A）. The patient had undergone excision of lipoma like egg size in his double shoulders 18 years before. One year later the tumor rectlrred m situ. The increase of the volume of his neck was observed for over 17 years, and the patient had no history of dyspnea and dysphagia.

线性代数中关于实对称矩阵正交对角化的证明注记

运用线性代数的基本知识,给出一种新颖的实对称矩阵的正交相似对角化的证明方法,丰富了线性代数教材中对于相关章节的处理方式.

利用对称操作矩阵表示的乘积推导分子点群的矩阵表示

根据矩阵乘法,推出不同对称操作之积所等价的第三个对称操作,并提出了含有不同对称元素的群如何由子群直积得出,同时得出了群元素相乘所衍生出所有新的对称元素。

改进TOPSIS的多属性决策方法

针对逼近理想点排序法(technique for order preference by similarity to ideal solution,TOPSIS)存在的缺陷,提出基于Tanimoto系数和基于对称差的2种改进TOPSIS。改善或解决TOPSIS存在指标相关性问题、特殊样本集合无法比较优劣问题和样本数据动态变化时产生的逆序现象等缺陷;在稳定性、特异性、敏感性和有效性4方面对经典TOPSIS模型、改进Tanimoto模型和改进对称差模型进行对比验证,给出2种改进模型的适用场景。结果表明,2种方法各具有一定的优势。

基于对称与均衡形式美法则的壮族背带纹样在女装设计中的应用

壮族背带纹样是壮族生活物化的精神载体,凝结着壮族的智慧与美好生活的向往,为更好的传承和提升壮族背带纹样与当代设计的多元融合。文章通过分析国内外女装品牌服饰中纹样装饰的方式及效果,归纳总结出基于对称与均衡形式美法则视角下,壮族背带纹样与女装设计多元融合的理论依据和实践路径。研究表明:基于对称与均衡的形式美法则能够有效的实现壮族背带纹样的文化价值和装饰审美,为壮族背带纹样传承与创新设计应用提供系统性的转化思路。

TWO ALGORITHMS FOR SYMMETRIC LINEAR SYSTEMS WITH MULTIPLE RIGHT-HAND SIDES

In this paper, we investigate the block Lanczos algorithm for solving large sparse symmetric linear systems with multiple right-hand sides, and show how to incorporate deflation to drop converged linear systems using a natural convergence criterion, and present an adaptive block Lanczos algorithm. We propose also a block version of Paige and Saunders’ MINRES method for iterative solution of symmetric linear systems, and describe important implementation details. We establish a relationship between the block Lanczos algorithm and block MINRES algorithm, and compare the numerical performance of the Lanczos algorithm and MINRES method for symmetric linear systems applied to a sequence of right hand sides with that of the block Lanczos algorithm and block MINRES algorithm for multiple linear systems simultaneously.[WT5,5”HZ]

Basic solutions of multiple parallel symmetric mode-III cracks in functionally graded piezoelectric/piezomagnetic material plane

The Schmidt method is adopted to investigate the fracture problem of multiple parallel symmetric and permeable finite length mode-III cracks in a functionally graded piezoelectric/piezomagnetic material plane. This problem is formulated into dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces. In order to obtain the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials. The results show that the stress, the electric displacement, and the magnetic flux intensity factors of cracks depend on the crack length, the functionally graded parameter, and the distance among the multiple parallel cracks. The crack shielding effect is also obviously presented in a functionally graded piezoelectric/piezomagnetic material plane with mul- tiple parallel symmetric mode-III cracks.

Multiple Symmetric Lipomas: A Case Report

Multiple symmetric lipomas are a rare disease characterized by multiple symmetrical deposits of adipose tissue associated with alcohol abuse.A 68-year-old man was admitted to our hospital for being operated on for a mass growth on the neck and back.Based on the patient’s medical history and preoperative magnetic resonance imaging findings,we performed surgical resection.There was no recurrence at one year postoperatively.

1例马德龙病报告

马德龙病是一种极少见的脂肪代谢障碍疾病,其特征是多发对称性脂肪组织增生、对称性良性脂肪增多,以无包膜的脂肪组织进行性、对称性沉积于典型部位。马德龙病在国内的报道极少,医务人员对该病的认识仍存在一定缺陷。本文就我科收治1例马德龙病的诊治及护理进行总结,以期提高医务人员对该病的认识,为临床护理提供借鉴。

一个完全对称函数的复合函数Schur凸性的简单证明

针对一个完全对称函数的复合函数Schur凸性问题,基于Schur凸函数的性质给出了已有结果的又一证明.证明的主要思想方法是构造合适的复合函数,并利用复合函数的Schur凸性、Schur凸函数与Schur乘性凸函数或Schur调和凸函数的关系,给出了完全对称函数的复合函数Schur凸性、Schur乘性凸性和Schur调和性的简单证明.

颈部良性对称性脂肪瘤病1例

1临床资料患者,男,55岁,主因颈部弥漫性肿大1年进行性加重,伴打鼾、憋气半年入院。患者1年前无明显诱因出现颈部膨隆,无发热、疼痛等不适,未予重视。此后颈前膨隆范围逐渐扩大,蔓延至全颈部,并向颈下、枕后、项背部蔓延,呈弥漫性生长,速度缓慢并伴有吞咽困难。近半年来颈部弥漫性肿大进行性加重,伴打鼾憋气、夜间不能平卧、夜尿次数增多、白天嗜睡乏力而入院。既往体健,

Diagnostic and surgical challenges of progressive neck and upper back painless masses in Madelung’s disease: A case report and review of literature

BACKGROUND Madelung’s disease(MD)is a chronic alcoholism-associated metabolic syndrome characterized by symmetrical subcutaneous deposition of adipose tissue in the head,neck,shoulders,back,trunk,and nerve roots of the upper and lower limbs.It is relatively rare in Asian individuals and is prone to misdiagnosis.Herein,we report a case of a patient with MD who had undergone surgical management at our hospital,and we discuss the pathogenesis,diagnosis,and treatment of MD.CASE SUMMARY We report a case of MD in a 65-year-old man of Han descent.The patient had multiple,painless progressive masses for more than five years in the neck and more than 30 years in the upper back.Because of neck mobility limitations and progressive cosmetic deformities caused by the masses,he was admitted to our hospital.He drank approximately 500 mL of liquor per day and smoked heavily for more than 30 years.Contrast-enhanced computed tomography of the neck and chest documented abundant unencapsulated,subcutaneous fatty deposits.We prepared a staged operation plan.The patient was diagnosed with MD;he was advised to abstain from alcohol and was followed up regularly.After a 3-month follow-up,no recurrence of fat accumulation was found in the surgical areas.CONCLUSION This report presents a case of surgical treatment for MD to improve clinicians'understanding of the disease.

关于n重积分对称性的一点思考

本文从多维度的视角通过定义n维空间两个点的对称以及两个集合(区域)的对称,把奇偶函数在对称区间求定积分的性质推广到了n维空间求n重积分,对定积分、重积分对称性计算公式在形式上进行了统一.利于n重积分的简便、快捷、正确计算.

颈部及腰部多发良性对称性脂肪瘤病1例

1临床资料患者,男,53岁。因双侧颈后肿物3年,增大2周于2017-07-06入院。患者诉3年前无明显诱因颈后两侧出现对称性、直接1 cm类圆形包块,无红肿、疼痛,无畏寒、发热,无头晕、头痛,就诊当地县医院,行颈部肿物彩超示:考虑颈后脂肪瘤。建议戒酒后行手术治疗。2周前感肿物明显增大,约拳头大小,就诊我院,行彩超示:双侧颈后体表包块处大片脂肪样低回声区,考虑良性对称性脂肪瘤病。门诊拟"脂肪瘤"收住院手术。

良性对称性脂肪瘤病

1.1临床资料。2012年11月-2016年8月广西壮族自治区人民医院耳鼻咽喉科颈部脂肪瘤患者9例,年龄43-67岁,均为中老年男性,病史为10个月-30年不等。9例患者病变区均无疼痛、压痛,无呼吸困难、吞咽困难,无咽喉疼痛,无声音嘶哑,无咳嗽、咳痰。查体：肿物大小约4 cm×4.5 cm×6 cm-18 cm×12 cm×9 cm,质软,表面光滑,无红肿、破溃,包绕颈部,上至下颌骨,下达甲状软骨,

多发性对称性脂肪瘤病的诊断与治疗

目的:介绍多发性对称性脂肪瘤病的诊断和治疗方法。方法:结合我院收治的典型病例,回顾国内有详细记载的44例病例,详述多发性对称性脂肪瘤病的临床症状、体征、诊断及治疗,并做文献复习。结果:多发性对称性脂肪瘤病患者以中年男性居多,长期的嗜酒史及典型的临床表现对于该病的诊断有一定的帮助,对于影响美观及功能的患者手术治疗效果理想。结论:全面了解多发性对称性脂肪瘤病的发病情况,对其诊断与治疗具有一定的临床价值。

CT和MR诊断Madelung病累及喉和喉周围结构

目的观察Madelung病累及喉和周围结构的CT和MR表现。方法回顾性分析23例Madelung病的CT和MR表现。结果CT和MR显示异常增多的脂肪组织主要沉积于颈前和项部皮下组织、胸锁乳突肌深面、斜方肌深面、颈后三角、涎腺周围等部位。增多的脂肪组织累及喉部包括喉内脂肪堆积和喉周围结构脂肪堆积。喉内脂肪增多包括声门上区受累、声门区受累和声门下区受累。喉内脂肪增多可以造成喉腔狭窄,主要发生于声门上区和声门区。喉周围结构脂肪增多可累及舌骨下肌群深面和前方、环状软骨后方、咽后间隙等。舌骨下肌群深面脂肪增多,舌骨下肌群与甲状软骨分离,肌肉呈游离状。环状软骨后方脂肪增多使环状软骨与环后区之间出现间隙。咽后间隙脂肪增多使喉前移,与椎前组织分离,呈漂浮状,主要出现于声门上区水平。结论CT和MR检查能准确显示Madelung病颈部增厚脂肪的分布范围,进一步了解喉和喉周围结构受累情况。

Ⅰ型Madelung综合征的临床特征及CT、MRI影像特点

目的探讨Ⅰ型Madelung综合征的临床特征及CT、MRI影像特点,提高对本病的认识。方法收集经临床证实的Ⅰ型Madelung综合征15例,回顾性分析其临床资料及CT、MRI影像表现,CT平扫5例,MRI平扫10例。结果15例中女性6例,男性9例。男性均有酗酒史,伴酒精性肝硬化,女性有代谢障碍性疾病,其中糖尿病2例,高血压2例,甲状腺功能减退症1例,高尿酸血症1例。临床上均表现为颈部对称性增粗,女性主要位于双侧后项部,男性主要位于双侧颈部、项部、肩背部及上胸部。CT均显示皮下及肌间隙内均一脂肪密度,呈弥漫性、对称性分布,边界不清,无包膜,无肿块,无钙化,内可见索条状纤维分隔,邻近肌肉受压、移位、萎缩、变细。MRI显示病变区均表现为短T1长T2信号,压脂序列均呈低信号。结论Ⅰ型Madelung综合征为男性发病,女性发病罕见,脂肪组织的异常沉积存在性别差异,女性患者病变范围比较局限,主要累及后颈部,而男性患者范围广泛,主要累及颈部、项部、肩背部及上胸部。