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abdominal anatomy

Vikas Gupta, Yibing Wang, Alejandra Méndez Romero, Andriy Myronenko, Petr Jordan, Calvin Maurer, Ben Heijmen, Mischa Hoogeman
PURPOSE: To validate a novel deformable image registration (DIR) method for online adaptation of planning organ-at-risk (OAR) delineations to match daily anatomy during hypo-fractionated RT of abdominal tumors. MATERIALS AND METHODS: For 20 liver cancer patients, planning OAR delineations were adapted to daily anatomy using the DIR on corresponding repeat CTs. The DIR's accuracy was evaluated for the entire cohort by comparing adapted and expert-drawn OAR delineations using geometric (Dice Similarity Coefficient (DSC), Modified Hausdorff Distance (MHD) and Mean Surface Error (MSE)) and dosimetric (Dmax and Dmean ) measures...
March 8, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
Ali Mohtashami, Andrew Kiat, Jane Cross, Robert Simon, Austin Curtin
INTRODUCTION: Abernethy malformations are extremely rare congenital anomalous portosystemic shunts. We report the case of a patient with a rare variant Abernethy malformation between the superior mesenteric vein and left renal vein, associated with a massive jejunal diverticulum. PRESENTATION OF CASE: A 37-year-old Caucasian female presented to our emergency department with severe abdominal pain and proceeded to laparotomy for a presumed small bowel obstruction...
February 27, 2018: International Journal of Surgery Case Reports
Anja Püschel, Rasmus Ebel, Patricia Fuchs, Janet Hofmann, Jochen K Schubert, Jan P Roesner, Stefan Bergt, Andreas Wree, Brigitte Vollmar, Ernst Klar, Carsten M Bünger, Sabine Kischkel
BACKROUND: Paraplegia due to spinal cord ischemia (SCI) is a serious complication after repair of thoraco-abdominal aortic aneurysms. For prevention and early treatment of spinal ischemia intraoperative monitoring of spinal cord integrity is essential. This study was intended to improve recognition of SCI through a combination of transcranial motor-evoked potentials (tc-MEPs), serum markers and innovative breath analysis. METHODS: In nine female German landrace pigs, tc-MEPs were captured, markers of neuronal damage were determined in blood and volatile organic compounds (VOCs) were analysed in exhaled air...
March 5, 2018: Annals of Vascular Surgery
Modesta Makungu, Wencke M du Plessis, Michelle Barrows, Hermanus B Groenewald, Katja N Koeppel
The red panda ( Ailurus fulgens) is classified as an endangered species by the International Union for Conservation of Nature and Natural Resources. The aim of this study was to describe the normal radiographic abdominal anatomy in red pandas to provide guidance for clinical use. Radiography of the abdomen was performed in nine captive red pandas during their annual health examinations. Seven of nine animals had six lumbar vertebrae. The sacrum consisted mainly (8/9) of three fused segments. Hypaxial muscles were easily seen in animals weighing 5 kg and above...
March 2018: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
Ivan Kuang Hsin Huang, Seyed Ameli Renani, Robert A Morgan
The application of endovascular strategies to treat aneurysms involving the abdominal and thoracoabdominal aorta has evolved significantly since the inception of endovascular aneurysm repair. Advances in endograft technology and operator experience have enabled the management of a wider spectrum of challenging aortic anatomy. Fenestrated endovascular and branched endovascular aneurysm repair represent two technical innovations, which have expanded endovascular treatment options to include patients with paravisceral and thoracoabdominal aortic aneurysms...
March 6, 2018: Cardiovascular and Interventional Radiology
David F Pinal-Garcia, Carlos M Nuno-Guzman, Maria E Gonzalez-Gonzalez, Tomas R Ibarra-Hurtado
Background: The celiac artery, celiac axis or celiac trunk is the first major abdominal branch of the aorta. Anatomic variations and accessory vessels have been reported with variable percentages. The purpose of this study was to report the pattern of the celiac trunk and its anatomic variations in a sample of Mexican population. Methods: Celiac trunk dissection was performed in 140 fresh cadavers. Cadavers of Mexican subjects aged 18 years and older were included...
April 2018: Journal of Clinical Medicine Research
Ingmar L Defize, Bernadette Schurink, Teus J Weijs, Tom A P Roeling, Jelle P Ruurda, Richard van Hillegersberg, Ronald L A W Bleys
BACKGROUND: Injury and subsequent leakage of unrecognized thoracic duct tributaries during transthoracic esophagectomy may lead to chylothorax. Therefore, we hypothesized that thoracic duct anatomy at the diaphragm is more complex than currently recognized and aimed to provide a detailed description of the anatomy of the thoracic duct at the diaphragm. BASIC PROCEDURES: The thoracic duct and its tributaries were dissected in 7 (2 male and 5 female) embalmed human cadavers...
March 3, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
Cosimo Bleve, Valeria Bucci, Maria Luisa Conighi, Francesco Battaglino, Lorenzo Costa, Lorella Fasoli, Elisa Zolpi, Salvatore Fabio Chiarenza
Horseshoe kidney (HSK) is a congenital defect of the urinary tract that occurs in 0.25% of the general population. Laparoscopic Vascular Hitch (LVH) according to Hellstrom-Chapman represent an alternative approach in treatment of extrinsic hydronephrosis by crossing vessels (CV) in pediatric age. In our Department from 2006 to 2016, 36 children with extrinsic-Uretero-Pelvic-Junction (UPJ)-Obstruction (UPJO) underwent laparoscopic vessels transposition. Over the last 4years, we have treated three patients with extrinsic hydronephrosis in HSK; two males and one female respectively of 6, 7 and 8years...
December 13, 2017: La Pediatria Medica e Chirurgica: Medical and Surgical Pediatrics
Alvaro Robin-Lersundi, Luis Blazquez Hernando, Javier López-Monclús, Arturo Cruz Cidoncha, Carlos San Miguel Méndez, Elena Jimenez Cubedo, Miguel Angel García-Ureña
BACKGROUND: Posterior component separation with transversus abdominis release technique is increasingly being used for abdominal wall reconstruction in complex abdominal wall repair. The main purpose of this study is to present a modification of the surgical technique originally described that facilitates the surgical procedure and offers additional advantages. METHODS: Based on the knowledge of the anatomy of the retromuscular space and the preperitoneal aerolar tissue distribution, we start the incision on the posterior rectus sheath from the arcuate line in a down to up direction...
March 3, 2018: Langenbeck's Archives of Surgery
Jason S Hawksworth, Chirag S Desai, Khalid M Khan, Stuart S Kaufman, Nada Yazigi, Raffaele Girlanda, Alexander Kroemer, Thomas M Fishbein, Cal S Matsumoto
Intestine failure-associated liver disease (IFALD) is widely recognized as a lethal complication of long-term parenteral nutrition. The pathophysiology of IFALD is poorly understood but appears to be multifactorial and related to the inflammatory state in the patient with intestinal failure (IF). Visceral transplantation for IFALD includes variants of intestine, liver, or combined liver and intestine transplantation. Graft selection for an individual patient depends on the etiology of intestinal failure, abdominal and vascular anatomy, severity of IFALD, and potential for intestinal rehabilitation...
March 2, 2018: American Journal of Transplantation
N Asakage
BACKGROUND: There has been confusion in the anatomical recognition when performing inguinal hernia operations in Japan. From now on, a paradigm shift from the concept of two-dimensional layer structure to the three-dimensional space recognition is necessary to promote an understanding of anatomy. ANATOMY AND EMBRYOLOGY: Along with the formation of the abdominal wall, the extraperitoneal space is formed by the transversalis fascia and preperitoneal space. The transversalis fascia is a somatic vascular fascia originating from an arteriovenous fascia...
February 27, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Kathleen Boyer, Eamon Filan, Brian Ching, Veronica Rooks, Dwight Kellicut
Nutcracker phenomenon is the descriptor for a patient's anatomy whenever the left renal vein becomes compressed between the abdominal aorta and the superior mesenteric artery. Nutcracker syndrome is the terminology used when the nutcracker phenomenon is accompanied by symptoms including pain (abdominal, flank, pelvic), hematuria, and orthostatic proteinuria. Diagnosis can be made with Doppler ultrasound, venography, computed tomography, or magnetic resonance imaging. This case demonstrates some of the typical findings of nutcracker syndrome...
February 2018: Radiology Case Reports
Lior Har-Shai, Yehiel Hayun, Eric Barel, Dean D Ad-El
During the last two decades, in parallel to the increased prevalence of bariatric procedures, there has been a marked increase in the prevalence of abdominoplasty surgery in the United States, and in accordance an increase in the scientific and clinical research related to all aspects of this technique. The most common complication of abdominoplasty is the formation of post-operative seroma. Various theories have been raised regarding the pathophysiology of seroma formation, and numerous methods for seroma prevention have been employed and tested...
February 2018: Harefuah
Raphael Soler, Aurelien Vallee, Dominique Fabre, Stéphan Haulon
Endovascular treatment of thoracoabdominal aneurysms: what's new? Thoracoabdominal aneurysms (T-AAA) are aortic aneurysms that involve both the thoracic and abdominal segments of the aorta and its associated visceral branches. Although the first successful open repair was reported over 50 years ago, the risks of treatment remain considerable. As the first generations of devices available for endovascular aneurysm repair (EVAR) were relatively simple tubes or bifurcated grafts, initial attempts to extend the benefits of EVAR to patients with T-AAA lead to "hybrid solution"...
February 22, 2018: La Presse Médicale
David Borrego, Erin M Lowe, Cari M Kitahara, Choonsik Lee
A PC Program for X ray Monte Carlo (PCXMC) has been used to calculate organ doses in patient dosimetry and for the exposure assessment in epidemiological studies of ra- diogenic health related risks. This study compared the dosimetry from using the built-in stylized phantoms in the PCXMC to that of a newer hybrid phantom library with improved anatomical realism. We simulated chest and abdominal x ray projections for 146 unique body size computational phantoms, 77 males and 69 females, with different combinations of height (125 - 180 cm) and weight (20 - 140 kg) using the built-in stylized phantoms in the PCXMC version 2...
February 21, 2018: Physics in Medicine and Biology
Alberto M L Caldeira, Kelly Carrión, John Jaulis
BACKGROUND: Abdominoplasty is the most frequently performed surgical procedure for body contour; in our experience, we have observed some patients with prominent bulging that is difficult to treat and that presents results that are unsatisfactory or have recurrences to conventional treatments. This leads us to carry out an analysis of the elements responsible for the containment and abdominal format. We determined that it may be due to an inability of an important sagging aponeurotic muscle of primary origin to support the abdomen and could be caused by predisposing factors...
February 20, 2018: Aesthetic Plastic Surgery
Ashley J Williamson, Trissa Babrowski
INTRODUCTION: Endovascular approach to abdominal aortic aneurysm has increased in frequency over the last decade and is preferred by many practitioners and patients alike. However, its role in "complex" aneurysms with challenging anatomy, short neck length, or borderline landing zone for grafts is less well understood. Additionally, the endovascular role in complex urgent or emergent repairs has not been adequately studied. Several techniques have been developed in order to address these concerns and further the endovascular approach...
February 19, 2018: Journal of Cardiovascular Surgery
Himerón Limaylla-Vega, Emilio Vega-Gonzales
Iatrogenic bile duct injuries (IBDI) represent a serious surgical complication of laparoscopic cholecystectomy (LC). Often it occurs when the bile duct merges with the cystic duct; and they have been ranked by Strasberg and Bismuth, depending on the degree and level of injury. About third of IBDI recognized during LC, to detect bile leakage. No immediate repair is recommended, especially when the lesion is near the confluence or inflammation is associated. The drain should be established to control leakage of bile and prevent biliary peritonitis, before transferring the patient to a specialist in complex hepatobiliary surgery facility...
October 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
Ophélie Cojean, Claire Vergneau-Grosset, Isabelle Masseau
Captive leopard geckos (Eublepharis macularius) often present to the exotic clinic for gastrointestinal impactions, follicular stasis, or dystocia. To our knowledge, normal ultrasonographic anatomy of these lizards has not been described. The objectives of this prospective, anatomic, analytical study were to develop ultrasound techniques for this species and to describe the normal sonographic anatomy of the head, coelomic cavity, and tail. Eleven, healthy, female leopard geckos were included. A linear array 13-18 MHz transducer was used...
February 19, 2018: Veterinary Radiology & Ultrasound
Shelby C White, Peter N Dean, Eugene D McGahren, James J Gangemi, Jeffrey Vergales
BACKGROUND: Patients with heterotaxy syndrome (HS) often have asymptomatic malrotation. There is a lack of consensus regarding the management of these patients, particularly in patients with complex congenital heart disease (CHD). We sought to describe the prevalence of malrotation and incidence of volvulus in a population of patients with complex CHD and to identify the impact of malrotation on morbidity and mortality following cardiac surgery. METHODS: We performed a retrospective review of all patients with HS and complex CHD who required cardiac surgery in the first year of life at a single center between October 1995 and September 2015...
January 31, 2018: Journal of Pediatric Surgery
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