Pseudoaneurysm and deep vein thrombosis complicating femoral osteochondroma: Multimodality imaging

A case of a femoral osteochondroma complicated by pseudoaneurysm and deep venous thrombosis is presented. Multimodality imaging contributed crucial information to allow successful diagnosis and preoperative planning.     

聚焦超声与低温等离子治疗后兔鼻黏膜形态学分析

目的 观察聚焦超声与低温等离子对鼻黏膜形态学的影响程度及意义.方法 运用聚焦超声技术,在设定的剂量参数下对兔鼻甲进行直线扫描;运用低温等离子射频消融术对免鼻甲进行处理,在1个月及3个月后对两种方法处理后兔鼻甲切片及正常兔鼻甲切片进行对比观察,通过大体形态、光镜下观察对两种治疗方法兔鼻黏膜组织形态学的改变进行比较.结果 两种方法处理后1个月及3个月后兔鼻甲在外观和色泽无明显改变,光镜下显示兔鼻黏膜上皮层完整;运用低温等离子射频消融术处理后兔鼻甲外观较正常缩小,色泽灰白,且有分泌物存在,光镜下显示兔鼻黏膜上皮层断裂,部分切片上皮层完全消失.结论 在设定参数下聚焦超声可不破坏鼻黏膜上皮,可使鼻黏膜黏液纤毛系统功能得以完全保留.     

Household Effects of School Closure during Pandemic (H1N1) 2009, Pennsylvania, USA

To determine the effects of school closure, we surveyed 214 households after a 1-week elementary school closure because of pandemic (H1N1) 2009. Students spent 77% of the closure days at home, 69% of students visited at least 1 other location, and 79% of households reported that adults missed no days of work to watch children.     

A fossil primate of uncertain affinities from the earliest late Eocene of Egypt

Paleontological work carried out over the last 3 decades has established that three major primate groups were present in the Eocene of Africa—anthropoids, adapiforms, and advanced strepsirrhines. Here we describe isolated teeth of a previously undocumented primate from the earliest late Eocene (≈37 Ma) of northern Egypt, Nosmips aenigmaticus, whose phylogenetic placement within Primates is unclear. Nosmips is smaller than the sympatric adapiform Afradapis but is considerably larger than other primate taxa known from the same paleocommunity. The species bears an odd mosaic of dental features, combining enlarged, elongate, and molariform premolars with simple upper molars that lack hypocones. Phylogenetic analysis across a series of different assumption sets variously places Nosmips as a stem anthropoid, a nonadapiform stem strepsirrhine, or even among adapiforms. This phylogenetic instability suggests to us that Nosmips likely represents a highly specialized member of a previously undocumented, and presumably quite ancient, endemic African primate lineage, the subordinal affinities of which have been obscured by its striking dental autapomorphies. Discriminant functions based on measurements of lower molar size and topography reliably classify extant prosimian primates into their correct dietary groups and identify Nosmips and Afradapis as omnivores and folivores, respectively. Although Nosmips currently defies classification, this strange and unexpected fossil primate nevertheless provides additional evidence for high primate diversity in northern Africa ≈37 million years ago and further underscores the fact that our understanding of early primate evolution on that continent remains highly incomplete.     

Chronic myelogenous leukemia in sickle cell/beta 0-thalassemia

Sickle cell/beta (0)-thalassemia (S/β(0)-thal) is a compound heterozygous state for βS and β(0) thalassemia. There are rare reported cases of patients with sickle cell disease who developed hematological neoplasms including myeloid and lymphoid conditions; however, to the best of our knowledge, chronic myelogenous leukemia (CML) occurring in S/β(0) -thal has been reported in one case and this is the second such report.