Anomalies acquises du systeme porte: evaluation en scanner et IRM

Cunoaşterea anatomiei şi a variantelor normei este obligatorie în chirurgia ficatului. Este o prezentare didactică de sinteză asupra anomaliilor sistemului porte explorat prin CT şi IRM

Noble gas and carbon isotope systematics at the seemingly inactive Ciomadul volcano (Eastern‐Central Europe, Romania): evidence for volcanic degassing

Ciomadul is the youngest volcano in the Carpathian-Pannonian Region, Eastern-Central Europe, which last erupted 30 ka. This volcano is considered to be inactive, however, combined evidence from petrologic and magnetotelluric data, as well as seismic tomography studies suggest the existence of a subvolcanic crystal mush with variable melt content. The volcanic area is characterized by high CO2 gas output rate, with a minimum of 8.7 × 103 t yr-1. We investigated 31 gas emissions at Ciomadul to constrain the origin of the volatiles. The δ13C-CO2 and 3He/4He compositions suggest the outgassing of a significant component of mantle-derived fluids. The He isotope signature in the outgassing fluids (up to 3.10 Ra) is lower than the values in the peridotite xenoliths of the nearby alkaline basalt volcanic field (R/Ra 5.95Ra±0.01) which are representative of a continental lithospheric mantle and significantly lower than MORB values. Considering the chemical characteristics of the Ciomadul dacite, including trace element and Sr- Nd and O isotope compositions, an upper crustal contamination is less probable, whereas the primary magmas could have been derived from an enriched mantle source. The low He isotopic ratios could indicate a strongly metasomatized mantle lithosphere. This could be due to infiltration of subduction-related fluids and postmetasomatic ingrowth of radiogenic He. The metasomatic fluids are inferred to have contained subducted carbonate material resulting in a heavier carbon isotope composition (13C is in the range of -1.4 to -4.6 ‰) and an increase of CO2/3He ratio. Our study shows the magmatic contribution to the emitted gases

Lower Cretaceous Provenance and Sedimentary Deposition in the Eastern Carpathians: Inferences for the Evolution of the Subducted Oceanic Domain and its European Passive Continental Margin

Reconstructing orogenic systems made up dominantly by sediments accreted in trenches is challenging because of the incomplete lithological record of the subducted oceanic domain and its attached passive continental margin thrusted by collisional processes. In this respect, the remarkable similar to 600 km long continuity of sediments exposed in the Eastern Carpathian thin-skinned thrust and fold belt and the availability of quantitative reconstructions for adjacent continental units provide excellent conditions for a paleogeographical study by provenance and sedimentological techniques constraining sediment routing and depositional systems. These sediments were deposited in the Ceahlau-Severin branch of the Alpine Tethys Ocean and over its European passive continental margin. We report sedimentological, paleomagnetic, petrographic, and detrital zircon U-Pb data of Lower Cretaceous sediments from several thin-skinned tectonic units presumably deposited in the Moldavides domain of the Eastern Carpathians. Sedimentological observations in the innermost studied unit demonstrate that deposition took place in a deepwater basin floor sheets to sandy turbidite system. Detrital zircon age data demonstrate sourcing from internal Carpathian basement units. The sediment routing changes in more external units, where black shales basin floor sheets to sandy mud turbidites were sourced from an external, European continental area. Although some degree of mixing between sources located on both margins of the ocean occurred, constraining a relatively narrow width of the deep oceanic basin, these results demonstrate that the internal-most studied unit was deposited near an Early Cretaceous accretionary wedge, located on the opposite internal side relative to the passive continental margin domain of other Moldavides units.6 month embargo; first published: 20 April 2020This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

18 years of Romanian national program of liver transplant - a retrospective analysis of 924 patients operated

Center of General Surgery and Liver Transplantation “Dan Setlacec”, Fundeni Clinical Institute, Bucharest, Romania, Al XIII-lea Congres al Asociației Chirurgilor „Nicolae Anestiadi” și al III-lea Congres al Societății de Endoscopie, Chirurgie miniminvazivă și Ultrasonografie ”V.M.Guțu” din Republica MoldovaIntroducere: Transplantul hepatic (TH) a devenit un tratament stabil pentru boala hepatică în stadiu final, cu peste 20.000 de proceduri la nivel mondial anual. Prelegerea prezintă și analizează înființarea și rezultatele Programului Național Român al TH. Material și metode: Între aprilie 2000 și decembrie 2018, 924 pacienti au efectuat 964 operatii de TH în România. Raportul dintre bărbați și femei a fost de 546/378, în timp ce raportul adult / pediatric a fost de 857/67, cu o vârstă medie de 46 de ani (mediană de 50 de ani, interval de 7 luni - 68 de ani). Principalele indicații TH au fost ciroza VHB (270 pac., 29%), CHC (196 pac., 21%) și ciroza VHC (141 pac., 15%). Rezultate: TH de la donator aflat in moarte cerebrala a fost efectuat în 805 de cazuri: TH total în 778 de cazuri, TH împărțit (split) în 20 de cazuri, LT redus în 5 cazuri, LT accesoriu în 1 caz și domino LT în 1 pac. TH de la donator inrudit a fost efectuat în 159 de pacienti:cu hemificat drept la113 pac (12%), secțiune laterală stânga la 30 pac (3%), cu hemificat stang la 14 pac (1,5%) și LDLT dual graft la 2 pacienti. Rata generală de morbiditate majoră a fost de 42% (cel puțin clasa IIIB Clavien-Dindo), în timp ce mortalitatea perioperatorie a fost de 8%. Rata de retransplantare a fost de 4,3% (40 de pac). Pe termen lung, ratele de supraviețuire estimate la pacienți cu 1, 3 și 5 ani au fost de 88%, 82% și, respectiv, 79%. Concluzii: Programul național de transplant hepatic abordează toate cauzele insuficienței hepatice acute și cronice sau a tumorilor hepatice la adulți și copii, folosind toate tehnicile chirurgicale, cu rezultate bune pe termen lung. Programul a evoluat constant în timp, ceea ce a dus la scăderea ratei mortalității pe lista de așteptare. * * * Introduction: Liver transplantation (LT) has become an established treatment for end-stage liver disease, with more than 20.000 procedures yearly worldwide. The lecture presents and analyzes the setting-up and results of the Romanian National Program of LT. Material and methods: Between April 2000 and December 2018, 924 pts received 964 LTs in Romania. Male/female ratio was 546/378, while adult/pediatric ratio was 857/67, with a mean age of 46 years (median 50 yrs; range 7 months – 68 yrs). Main LT indications were HBV cirrhosis (270 pts; 29%), CHC (196 pts; 21%), and HCV cirrhosis (141 pts; 15%). Results: Deceased donor LT was performed in 805 cases: whole LT in 778 cases, split LT in 20 cases, reduced LT in 5 cases, accesory LT in 1 case, and domino LT in 1 pt. Living donor LT was performed in 159 pts: right hemiliver in 113 pts (12%), left lateral section in 30 pts (3%), left hemiliver in 14 pts (1.5%), and dual graft LDLT in 2 pts. Overall major morbidity rate was 42% (at least IIIB Clavien-Dindo class), while perioperative mortality was 8%. Retransplantation rate was 4.3% (40 pts). Long-term overall 1, 3, and 5-year estimated survival rates for patients were 88%, 82%, and 79%, respectively. Conclusions: The Romanian National program for liver transplantation addresses all causes of acute and chronic liver failure or liver tumors in adults and children, using all surgical techniques, with good long-term outcome. The program constantly evolved over time, leading to decreased mortality rate on the waiting list