Huge colloid cyst of the third ventricle associated with calcification in the cyst wall

Giant or huge colloid cysts of the third ventricle up to of more than 3 cm in diameter are extremely rare. The patient presented with symptoms of increased intracranial pressure, including headache, vomiting, and papilledema. Computerized tomographic (CT) scan revealed a hypodense, huge colloid cyst of the third ventricle associated with calcification in the cyst wall. Both hypodensity and calcification are uncommon roentgenological findings for colloid cysts of the third ventricle. The patient was operated on by the transcortical/transventricular approach and the colloid cyst was completely excised.     

Effects of excess 1,25-dihydroxycholecalciferol in young rats

The oral administration for 5 days of excess 1,25-dihydroxychole-calciferol [1,25(OH)₂D₃] at doses of 1, 5, and 25 g/kg to rats, beginning at the age of 2 or 10 days, produced dose-dependent reductions in weight development and additional calcification near the skeleton. Alizarin red S stained skeleton revealed calcific deposits near the bones of the head, near the neural arches, between the ribs, along the bones both of the fore limbs and, to a lesser extent, of the hind limbs.Historically, the deposits appeared to be localized primarily in the subepithelial connective tissues. Starting treatment with 1,25(OH)₂D₃ (25 g/kg for 5 days) at the age of 20 days produced additional calcification in 1 of 8 rats at only 1 location (lower jaw). Additional calcification as described above could no longer be induced by 1,25(OH)₂D₃ in 30-day-old rats using doses up to 25 g/kg and 10 daily treatments. We conclude that the sensitivity of young rats to 1,25(OH)₂D₃-induced additional calcification, which differs in localization from that observed in adult rats, decreases with the maturation of the animals.     

Membranous lipodystrophy

Summary The case is described of a 35-year-old housewife diagnosed as having membranous lipodystrophy (as described by Nasu et al. in 1970 and called lipomembranous polycystic osteodysplasia by Hakola in 1972). The main symptom of this patient was a slowly progressive dementia. Skeletal symptoms were not seen. The computerized tomogram of the brain showed calcification of bilateral basal ganglia and the plain roentgenograms of the bones revealed cystic radiolucent areas at the distal end of the bones of the patient's extremities. Histological examination of the curetted material from the right talus revealed a membranocystic pattern. The fatty tissue curetted from the cyst of the talus and the lysosomal enzymes of the white blood cells were biochemically normal. A possible relationship between this disease entity and connective disorders is considered.     

老年退行性心脏瓣膜病临床研究

目的探讨老年退行性心脏瓣膜病(SRC)的临床特征。方法对66例SRC惠者的临床资料进行分析，包括静息心电图、运动心电图、心脏彩超，胸片，血脂及心力衰竭临床表现和治疗反应。结果左房室瓣和主动脉解钙化分别为76％和70％，心房颤动为76％。心脏收缩和舒张功能影响较小(EF≥65％者为79％)，主动脉弓内钙化影为79％；脂质代谢无明显异常。结论对老年人起病较晚。伴心脏明显杂音和心房纤颤，胸片提示主动脉弓内有显著钙化影和血脂无明显异常者，应积极作心脏彩超检查，以同冠心病和其他心脏病相鉴别。     

甲状腺微小癌病灶钙化超声表现及其诊断意义

目的探讨钙化在甲状腺微小癌(thyroid microcarcinoma,TMC)中的表达及超声诊断意义。方法回顾分析68例TMC和60例甲状腺良性疾病的病灶钙化情况和相关资料。结果 TMC和甲状腺良性疾病病灶钙化超声检出率分别为67.6%和33.3%(P<0.01);病理检查结果病灶钙化率分别为72.1%和35.0%(P<0.01)。微钙化在良、恶性钙化结节中所占比例各为20.8%和79.2%(P<0.01)。结节钙化中有70.0%为恶性,无钙化结节中32.8%为恶性(P<0.01)。TMC病灶微钙化发生率为55.9%,乳头状癌微钙化率为72.5%。女性及年龄<45岁TMC患者的病灶钙化率较良性疾病均明显为高,(P<0.01)。结论 TMC绝大多数为乳头状癌,微钙化是TMC特异性最高的超声表现特征,对TMC的诊断有十分重要意义。     

寿命表法对钙化型矽肺预后的探讨

收集了我区两个锡矿112例矽肺钙化病人进行追踪观察(1956～1985年),其中98例进行配对研究。经用简略寿命表计算,发现钙化组病人累积生存率、累积稳定率均高于对照组病人,钙化发生越早,累积生存率越高。研究表明矽肺钙化可使病程进展变缓,病人活存时间延长。     

SATB2 Immunoexpression in Peripheral Ossifying Fibroma and Peripheral Odontogenic Fibroma

Peripheral ossifying fibromas (POFs) and peripheral odontogenic fibromas (POdFs) appear clinically similar but of different histogenesis. The novel marker SATB2 is involved in regulation of osteoblastic differentiation and phenotype. However, SATB2 expression has not been previously explored in POFs and POdFs. Given the potential for mineralized tissue formation in POFs and POdFs, and to more clarify the phenotype of the lesional cells, this study was aimed to immunohistochemically investigate SATB2 expression in POFs and POdFs. Fourteen cases of POF and POdF (7 cases each) were selected, stained for SATB2 immunohistochemically, and scored according to the percentage of positive lesional cells (0, no staining; 1 +, < 5%; 2 +, 5–25%; 3 +, 26–50%; 4 +, 51–75%; and 5 +, 76–100%), and the intensity of staining was graded as weak, moderate, or strong. The control group included the inflammatory fibrous hyperplasia-like area present in two cases, 1 case fibroma, and 1 case giant cell fibroma. Moderate to strong, and diffuse SATB2 nuclear immunoreactivity was detected in the lesional cells of all cases of POFs and POdFs with variable scores; 3–5 + for the POFs and 3–4 + for the POdFs (P = 0.101). The distribution of staining was more prominent in those lesional cells associated with the osteoid/calcification in the cases of POFs. No staining was noted in the control group. The lesional cells in both POFs and POdFs express SATB2 and may exhibit the osteoblastic-like phenotype. SATB2 staining may be useful for diagnosis of subsets of POFs with minimal or absent calcification and some POdFs with unidentifiable odontogenic epithelium.     

肺部孤立结节钙化征象的HRCT评价

目的：本文旨在评价良恶性孤立结节（ＳＰＮＳ）的钙化征象在高分辨率ＣＴ（ＨＲＣＴ）上的差异。材料和方法：分析一组连续的资料，共５９例，其中４３例经病理学证实，１６例经临床诊断和随访明确。结果：３０例良性中的１２例（４０％），２９例恶性中的４例（１３石的）可见钙化征象（Ｐ＜０．０５）。钙化的形态有三种，１）结节状或斑炔状，２）点状，３）沙粒状。结节状或斑块状钙化是良性的特征。良恶性钙化分布不同，良性多位于中央，恶性则为偏心性的。ＨＲＣＴ所显示的１６例钙化中普通ＣＴ扫描仅显示３例。结论：ＨＲＣＴ上钙化征象多见于良性ＳＰＮＳ．但并非良性病变所特有，钙化对良恶性结节的鉴别有一定的参考价值。在钙化的显示上，ＨＲＣＴ明显优于普通Ｘ线及常规ＣＴ扫描。     

老年退行性心脏瓣膜病相关因素分析

目的:探讨老年人(≥60岁)退行性心脏瓣膜病患病的可能相关因素及危险因素。方法:钙化组67例,对照组73例,分析性别、年龄、高血压、冠心病、高脂血症、骨质疏松、糖尿病与老年退行性心脏瓣膜病的相关性,进一步分析其相关的危险因素。结果:年龄、高血压、高脂血症、骨质疏松在两组间分布差异有非常显著性(P<0.01),冠心病在两组间分布差异有显著性(P<0.05)。老年退行性心脏瓣膜病的危险因素是年龄、骨质疏松和高血压。结论:老年退行性心脏瓣膜病是一种随年龄改变的心脏病,年龄可能是其发病的显著危险因素;骨质疏松、高血压等因素可能是其发病的危险因素;冠心病、高脂血症等因素可能与其发病有关。     

超声探测甲状腺结节钙化对甲状腺癌的诊断价值

目的 探讨超声探测甲状腺结节钙化对甲状腺癌的诊断价值.方法 回顾性分析我院3924例甲状腺疾病患者的超声资料和病理结果,探讨钙化、微小钙化、粗大钙化和边缘环状钙化与甲状腺癌的关系,单发结节伴钙化和多发结节伴钙化与甲状腺癌的关系以及不同年龄组钙化与甲状腺癌的关系. 结果 甲状腺良性疾病钙化和微小钙化的发生率分别为32.05％和6.50％,甲状腺癌则为80.07％和51.53％,甲状腺癌钙化和微小钙化的发生率高于良性疾病(P＜0.01);单发结节和多发结节伴钙化的恶性率分别为53.31％和22.16％,伴微小钙化的恶性率则分别为74.12％和47.92％,单发结节伴钙化和伴微小钙化的恶性率均要高于多发结节,差异有统计学意义(P＜0.01);＜70岁患者钙化的恶性率随年龄增加逐渐下降(P＜0.05);微小钙化的恶性率在44岁及以下年龄组＞44岁以上年龄组(P＜0.01).结论 钙化和微小钙化是甲状腺癌的高危因素,单发结节和年轻患者的钙化和微小钙化的恶性率更高.