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https://www.readbyqxmd.com/read/29145292/recurrent-spinal-primitive-neuroectodermal-tumor-with-brain-and-bone-metastases-a-case-report
#1
Frank Chen, Shyh-Shin Chiou, Sheng-Fung Lin, Ann-Shung Lieu, Yi-Ting Chen, Chih-Jen Huang
RATIONALE: Primary spinal primitive neuroectodermal tumor (PNET) is relatively rare in all age groups, and the prognosis in most cases of spinal PNETs appears to be poor, with a median patient survival of 1 to 2 years. We present a case with recurrent spinal PNET with brain and bone metastases that was successfully treated by multimodality treatment. PATIENT CONCERNS: A 14-year-old teenage girl had suffered from progressive left upper back pain with bilateral lower legs weakness and numbness for 1 year...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29142772/rare-case-of-an-extraosseous-cervical-chordoma-with-both-intradural-and-extensive-extraspinal-involvement
#2
Victor Awuor, Christopher E Stewart, Albert Camma, Julie Renner, J M Tongson
Background: Chordomas must be considered among the differential diagnoses for extradural spinal tumors, especially involving the clival or sacrococcygeal regions. They are often locally invasive and destructive to the osseous structures from which they arise, but rarely extend intradurally. Here, we report a unique chordoma that was intradural and spanned nearly four subaxial cervical vertebral levels. Case Description: We report the case of an atypical intradural chordoma that spanned four subaxial levels of the cervical spine in an 81-year-old female...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29141865/development-and-plasticity-of-meningeal-lymphatic-vessels
#3
Salli Antila, Sinem Karaman, Harri Nurmi, Mikko Airavaara, Merja H Voutilainen, Thomas Mathivet, Dmitri Chilov, Zhilin Li, Tapani Koppinen, Jun-Hee Park, Shentong Fang, Aleksanteri Aspelund, Mart Saarma, Anne Eichmann, Jean-Léon Thomas, Kari Alitalo
The recent discovery of meningeal lymphatic vessels (LVs) has raised interest in their possible involvement in neuropathological processes, yet little is known about their development or maintenance. We show here that meningeal LVs develop postnatally, appearing first around the foramina in the basal parts of the skull and spinal canal, sprouting along the blood vessels and cranial and spinal nerves to various parts of the meninges surrounding the central nervous system (CNS). VEGF-C, expressed mainly in vascular smooth muscle cells, and VEGFR3 in lymphatic endothelial cells were essential for their development, whereas VEGF-D deletion had no effect...
November 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29134518/erector-spinae-plane-block-for-the-management-of-chronic-shoulder-pain-a-case-report
#4
Mauricio Forero, Manikandan Rajarathinam, Sanjib Das Adhikary, Ki Jinn Chin
PURPOSE: The erector spinae plane (ESP) block has been described in the successful management of both thoracic and abdominal pain. Since the erector spinae muscle extends to the cervical spine, the ESP block may be potentially useful in painful conditions of the shoulder girdle. CLINICAL FEATURES: We performed a series of ESP blocks at the T2/T3 level in an elderly male patient with chronic shoulder pain. Immediate and profound analgesia with improved range of motion was consistently observed following the block...
November 13, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29131280/the-sphenopalatine-foramen-in-man-anatomical-radiological-and-endoscopic-study
#5
Ehab Abdel Aziz El-Shaarawy, Sherif S Hassan
BACKGROUND: Epistaxis is a frequent problem otorhinolaryngologists faces of in their practice. The variations of the sphenopalatine foramen and consequently the artery may be one of the major sources of such bleeding. AIM OF THE WORK: The present work aimed at to localize the site of sphenopalatine foramen and also to illustrate its different shapes, number and any other variation. MATERIALS AND METHODS: In the current study, twenty adult skulls of both sexes with total 40 half skulls were used in addition to 20 heads of adult living subjects of both sexes aged between 30-60 years examined with multislice helical CT with 3-D reconstruction of SPF...
November 13, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29127332/outflow-of-cerebrospinal-fluid-is-predominantly-through-lymphatic-vessels-and-is-reduced-in-aged-mice
#6
Qiaoli Ma, Benjamin V Ineichen, Michael Detmar, Steven T Proulx
Cerebrospinal fluid (CSF) has been commonly accepted to drain through arachnoid projections from the subarachnoid space to the dural venous sinuses. However, a lymphatic component to CSF outflow has long been known. Here, we utilize lymphatic-reporter mice and high-resolution stereomicroscopy to characterize the anatomical routes and dynamics of outflow of CSF. After infusion into a lateral ventricle, tracers spread into the paravascular spaces of the pia mater and cortex of the brain. Tracers also rapidly reach lymph nodes using perineural routes through foramina in the skull...
November 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/29122337/study-of-anatomical-variations-of-the-zygomaticofacial-foramen-and-calculation-of-reliable-reference-points-for-operation
#7
A Ferro, S Basyuni, C Brassett, V Santhanam
Dissection on to the facial aspect of the zygoma is common in procedures of the midface for trauma, craniofacial deformity, and cosmesis. These procedures carry the risk of injury to the neurovascular structures that exit from the zygomaticofacial foramen (ZFF). The purpose of this study was to map the ZFF, and to establish reliable reference points from which to identify it before and during operation. We also aimed to compare the anatomy of the ZFF between sexes and among geographical populations. A total of 429 adult skulls from nine geographical sites were used...
November 6, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29117061/three-dimensional-analysis-of-the-fundus-of-the-human-internal-acoustic-canal
#8
Nadine Schart-Morén, Sune Larsson, Helge Rask-Andersen, Hao Li
OBJECTIVES: Documentation of the nerve components in the internal acoustic canal is essential before cochlea implantation surgery. Interpretations may be challenged by wide anatomical variations of the VIIIth nerve and their ramifications. Malformations may further defy proper nerve identification. DESIGN: Using microcomputed tomography, we analyzed the fundus bone channels in an archival collection of 113 macerated human temporal bones and 325 plastic inner molds...
November 7, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29110220/retrotransverse-foramen-of-the-atlas-prevalence-and-bony-variations
#9
Juan A Sanchis-Gimeno, Esther Blanco-Perez, Marcelino Perez-Bermejo, Susanna Llido, Shahed Nalla
PURPOSE: To analyze the prevalence of the retrotransverse foramen (RTF) and its bony variations. METHODS: One hundred ten atlases of living adult subjects, 161 twentieth century dry adult cervical atlases and four dry adult cervical atlases from medieval skeletons were studied to detect the RTF and its abnormal bony variations. The 110 living adult subjects underwent a computed tomography study to detect the RTF. RESULTS: In the in vivo sample (n = 110; 100%), the RTF was found in four (3...
November 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29109887/usefulness-of-sacral-sublaminar-wire-for-low-transverse-sacral-fractures-two-cases-report
#10
Tatsuro Sasaji, Hideki Imaizumi, Taishi Murakami
Low transverse sacral fractures are rare, with only two published reports regarding their surgery. The complication associated with surgery for sacral fractures is the prominence of implants. In addition, screw fixation below S3 is impractical. We performed posterior sacral fixation using S2 alar iliac (S2AI) screws and sacral sublaminar wires for low transverse sacral fractures. Case 1 was 65-year-old male with an S2-3 transverse sacral fracture. We performed laminectomy (S2-3) and passed ultrahigh molecular weight polyethylene (UHMWPE) cables from laminectomy area to the third posterior sacral foramina...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29098125/xiphoid-process-variations-a-review-with-an-extremely-unusual-case-report
#11
Faizullah Mashriqi, Anthony V D'Antoni, R Shane Tubbs
The xiphoid process is a small bony feature of the anterior thoracic wall just inferior to the sternum corpus. Although the xiphoid process is commonly represented as a straight, fully ossified bone in educational textbooks, reports of anomalous processes flood the literature. The xiphoid process can be broad, thin, monofid, bifid, trifid, curved, or deflected and contain foramina. Variations can be mistaken for epigastric masses. Herein, we report an extremely unusual bifid xiphoid process that is deflected anteriorly...
August 27, 2017: Curēus
https://www.readbyqxmd.com/read/29095949/apparent-sixth-sense-in-theropod-evolution-the-making-of-a-cretaceous-weathervane
#12
Bruce M Rothschild, Virginia Naples
OBJECTIVE: Two separate and distinctive skills are necessary to find prey: Detection of its presence and determination of its location. Surface microscopy of the dentary of albertosaurines revealed a previously undescribed sensory modification, as will be described here. While dentary "foramina" were previously thought to contain tactile sensory organs, the potential function of this theropod modification as a unique localizing system is explored in this study. METHOD: Dentary surface perforations were examined by surface epi-illumination microscopy in tyrannosaurine and albertosaurine dinosaurs to characterize their anatomy...
2017: PloS One
https://www.readbyqxmd.com/read/29091254/evaluation-of-morphologic-and-morphometric-characteristic-of-foramen-transversarium-on-3-dimensional-multidetector-computed-tomography-angiography-mdcta
#13
Ayfer Metin Tellioglu, Yasemin Durum, Mustafa Gok, Ayse Gizem Polat, Can Zafer Karaman, Sacide Karakas
AIM: The aim of this study was to investigate the size and variations of the foramen transversarium (TF). In addition, to study the anatomical variations of vertebral artery entering the transverse foramen of the cervical vertebrae. MATERIAL AND METHODS: The images of 141 (90 males, 51 females) patients aged between 18-79 years (mean: 52.7 years) were analyzed. As a result, 987 cervical spines (C1-C7) and 1974 foramen transversariums were individually evaluated...
September 26, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29077686/accessory-mental-foramen-and-maxillofacial-surgery
#14
Amin Rahpeyma, Saeedeh Khajehahmadi
Accessory mental foramens should be considered in surgical procedures performed in mandibular body and symphysis. Location and content of these foramina has significant impact on the result of surgery.Lip numbness is the catastrophic result if these foramina are violated while their content is nerves that carry sensory inputs from lower lip. Examples of interferences with dental implant, orthognathic, and periapical surgeries are presented and it is discussed in which conditions they complicate oral surgical procedures...
October 26, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29076906/fdg-pet-ct-in-immunoglobulin-g4-related-spinal-hypertrophic-pachymeningitis
#15
Qian Zhao, Aisheng Dong, Yushu Bai, Yang Wang, Changjing Zuo
A 49-year-old woman complained of right upper back pain for 1 month. Serum tests showed increased erythrocyte sedimentation rate. Thoracic spinal MRI showed an epidural lesion at the T1-T4 level with inhomogeneous signal intensity on T2-weighted images, slightly higher signal intensity than spinal cord on T1-weighted images, and remarkable enhancement on enhanced T1-weighted images. Epidural malignant tumor was suspected. FDG PET/CT was performed showing increased FDG uptake of the lesion extending to the right T1-T2 and T2-T3 neural foramina...
October 26, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29075158/locoregional-and-microvascular-free-tissue-reconstruction-of-the-lateral-skull-base
#16
REVIEW
Demetri Arnaoutakis, Sameep Kadakia, Manoj Abraham, Thomas Lee, Yadranko Ducic
The goals of reconstruction following any oncologic extirpation are preservation of function, restoration of cosmesis, and avoidance of morbidity. Anatomically, the lateral skull base is complex and conceptually intricate due to its three-dimensional morphology. The temporal bone articulates with five other cranial bones and forms many sutures and foramina through which pass critical neural and vascular structures. Remnant defects following resection of lateral skull base tumors are often not amenable to primary closure...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29069094/the-oldest-record-of-alvarezsauridae-dinosauria-theropoda-in-the-northern-hemisphere
#17
Alexander Averianov, Hans-Dieter Sues
Procoelous caudal vertebrae, a carpometacarpus with a hypertrophied metacarpal II, and robust proximal and ungual phalanges of manual digit II of a small theropod dinosaur from the Upper Cretaceous (Turonian) Bissekty Formation at Dzharakuduk, Uzbekistan, show unequivocal synapomorphies of the clade Alvarezsauridae and thus are referred to it. The caudal vertebrae have a unique longitudinal canal within the neural arch. The carpometacarpus, with metacarpal III occupying about one third of the width of the carpometacarpus, shows the most plesiomorphic stage of the evolution of the forelimb among known alvarezsaurids...
2017: PloS One
https://www.readbyqxmd.com/read/29058044/giant-angioleiomyoma-of-the-sacral-foramina-an-unusual-location
#18
Sang Min Lee, Doo Hoe Ha, Haeyoun Kang, Hye Jin Lee
Angioleiomyoma is a benign, vascular smooth muscle tumor originating from the tunica media of the vessel wall. In general, it typically arises in the cutaneous, subcutaneous tissue or fascia of the lower extremities in middle-aged women and is less than 2 cm in diameter. We report an unusual case of an angioleiomyoma of the sacral foramina in an 82-year-old man. MRI revealed a well-defined irregular-shaped deep-seated mass in the sacral foramina, showing branching pattern of growth associated with pressure bony erosion of the adjacent bones, with isointense to hypointense signal on T2-weighted images...
October 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29054029/endocranial-illuminator-a-technique-for-transilluminating-the-skull
#19
Nuttapon Surachotmongkhon, Nawaporn Techataweewan, Robert W Mann
A novel tool, the endocranial illuminator (EI), has been devised to facilitate examination of the interior of the intact human cranium. A number of the endocranial characteristics including cranial thickness, sutural complexities, and foramina are easy visible with this device. The EI enhances the accuracy of anatomical examination of the cranial vault in forensic, archaeological, and historical crania in those cases where they must remain intact. The EI is simple and inexpensive to construct and lightweight so it can be used in the laboratory or easily transported in the field...
October 10, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29033084/morphological-characteristics-and-classification-of-mandibular-first-molars-having-2-distal-roots-or-canals-3-dimensional-biometric-analysis-using-cone-beam-computed-tomography-in-a-korean-population
#20
Yemi Kim, Byoung-Duck Roh, Yooseok Shin, Bom Sahn Kim, Yoo-Lim Choi, Aena Ha
INTRODUCTION: The aim of this study was to determine the morphologic characteristics of mandibular first molars having 2 canals in distal roots. Interorifice distance, buccal bone thickness, and root curvature were evaluated using cone-beam computed tomography images in a Korean population. METHODS: In total, 1958 mandibular first molars were evaluated in axial, coronal, sagittal, and paraxial planes. Distal roots having 2 canals were classified according to their root and canal shapes (2 roots, 2 canals [2R2C]; 1 root, 2 canals with 2 apical foramina [1R2C(2-2)]; and 1 root, 2 canals with 1 apical foramen [1R2C(2-1)])...
October 12, 2017: Journal of Endodontics
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