高原地区CT导引经皮腰椎间盘髓核切吸术的临床研究

目的：探讨高原地区CT导引经皮腰椎间盘髓核切吸术（CT-PLD）的临床应用价值。方法：对68例腰椎间盘突出症患者实施了CT-PLD。（1）术前扫描病变椎间盘，筛选病例，并研究手术方案；（2）于即时CT图像上选择最佳的穿刺层面，设计穿刺路径，记录穿刺参数，并于体表标记穿刺点；（3）按既定参数进行穿刺；（4）经CT扫描确认穿刺进入椎间盘，扩张进针路径，进行切吸；（5）术毕CT扫描，观察进针路径有无出血及椎间盘还纳情况。结果：68例共79个椎间盘均穿刺成功。经3-18个月的随访，28例症状完全消失，36例症状明显减轻且能正常工作及生活，椎间盘还纳为1-4mm，显效率为94.12%。结论：CT-PLD安全有效，并发症少，是高原地区腰椎间盘突出症的理想的治疗方法。     

初发型溃疡性结肠炎25例临床分析

1临床资料1998-01/2004-06住院溃疡性结肠炎(ulcerative colitis,UC)患者307例,其中初发型25例,全部患者均符合2000年成都全国炎症性肠病会议修改的UC诊断标准[1],并经电子结肠镜检查和X线钡灌肠检查,以及组织学检查确诊,连续粪培养2次排除细菌感染,同时排除阿米巴肠病、血吸虫病、肠道肿瘤和内分泌疾病.     

急性脑缺血的弥散和灌注磁共振成像

最近 ,磁共振成像 (MRI) ,特别是弥散加权成像 (DWI)和灌注加权成像 (PWI)的进展 ,已使临床医生具备了区分不可逆性脑梗死和潜在的可逆性缺血半暗带的能力。本文探讨了DWI和PWI的工作原理和应用。随着急性脑缺血溶栓和其他治疗的不断进展 ,在急性卒中的决策方面 ,神经影像学会随时起到越来越重要的作用。     

Porokeratosis Causing Change in Melanocytic Nevi

Large cell transformation of mycosis fungoides (MF) is an uncommon phenomenon. We present a case of CD30‐positive large cell transformation and discuss its possible pathophysiology. A 74 year‐old male with a 36‐year history of patch stage MF presented with a 3‐month history of right chest cellulitis that was refractory to IV antibiotic treatment. Skin biopsies from his thigh demonstrated a patchy dermal infiltrate of irregular and hyperchromatic lymphocytes and epidermotropism. The majority of the infiltrate was positive for CD4, CD3, CD2, and negative for CD7. Only 10% were positive for CD25 and CD8. Biopsies obtained from the ulcerated chest nodules showed a dermal infiltrate of large and pleomorphic lymphoid cells with prominent nucleoli. These large lymphoid cells were strongly positive for CD3, CD30, CD25, CD2 and UCHL‐1. Occasional cells were positive for CD4 and CD20. They were negative for ALK‐1, TIA‐1, CD7, CD8, and CD15. T‐gamma receptor gene rearrangement analyses by polymerase chain reaction demonstrated a clonal process with similar rearrangement patterns identified in the patch stage MF as well as in large cell transformation areas. Examinations of his peripheral blood and bone marrow were negative. The patient had tolerated one cycle of CHOP chemotherapy.     

少见胸腺肿瘤及肿瘤样病变的CT表现

目的：探讨少见胸腺肿瘤及肿瘤样病变的CT表现。方法：搜集8例经病理证实的少见胸腺肿瘤及肿瘤样病变，与病理结果对照，结合献分析CT表现。结果：8例中淋巴瘤3例，畸胎瘤2例，囊肿2例，脂肪瘤1例。结论：CT检查对少见胸腺肿瘤及肿瘤样病变有较大价值，部分病变可确诊。