La série saumâtre et continentale d'âge Miocène moyen et supérieur d'Eivissa (ex-Ibiza, Baléares)

At first, it is recalled that the main tectonics of Eivissa (Ibiza) involves white marls of upper Burdigalian- lower Langhian, with abundant planktonic microorganisms. But, near the south-west promontory of the island, in a site discovered a century ago by Vidai and Molina (1888), one find directly transgressive on the Senonian, polygenic conglomerates, then a sandy marly formation with Bivalvia (Cmssos- crea gryphoides, Mytilus aquitanicus, ...) and few benthic Foraminifera, finally coaly clays with brackish or estuary Gastropods. This "Formation of Cap Jueu" has also provided Langhian-like scarce paiynological assemblages. Strata of the same sedimentary cycle, also involved in the tangential tectonics, may be pointed out at the top of the imbrication of Roques Altes (ex- Rocas Altas), South West of la Talaia of Sant Josep (ex- San José) and near ant Rafael, maybe dating from the Tortonian (?) by microflora. It is possible to group here the "top conglomerates" from the center of the island, which lie up to Tnas, but usually ravining lower Langhian marls. So, an independent sedimentary cycle, prior to paroxysmal tectonics, dated as "middle" - ? upper Miocene (Langhian to ? Tortonian), may be defined, which goes before the deposit of marine "upper" Tortonian (Limestones of Portinatx), posterior to the main compressive phase. Clayey interstratifications in these limestones have provided poor paiynological assemblages corresponding to this Tortonian age. In short, the Miocene from Eivissa shows three independent sedimentary cycles which enable to date tectonic episodes concerning this eastern extension of Betic Cordilleras

La série saumâtre et continentale d'âge Miocène moyen et supérieur d'Eivissa (ex-Ibiza, Baléares)

At first, it is recalled that the main tectonics of Eivissa (Ibiza) involves white marls of upper Burdigalian- lower Langhian, with abundant planktonic microorganisms. But, near the south-west promontory of the island, in a site discovered a century ago by Vidai and Molina (1888), one find directly transgressive on the Senonian, polygenic conglomerates, then a sandy marly formation with Bivalvia (Cmssos- crea gryphoides, Mytilus aquitanicus, ...) and few benthic Foraminifera, finally coaly clays with brackish or estuary Gastropods. This "Formation of Cap Jueu" has also provided Langhian-like scarce paiynological assemblages. Strata of the same sedimentary cycle, also involved in the tangential tectonics, may be pointed out at the top of the imbrication of Roques Altes (ex- Rocas Altas), South West of la Talaia of Sant Josep (ex- San José) and near ant Rafael, maybe dating from the Tortonian (?) by microflora. It is possible to group here the "top conglomerates" from the center of the island, which lie up to Tnas, but usually ravining lower Langhian marls. So, an independent sedimentary cycle, prior to paroxysmal tectonics, dated as "middle" - ? upper Miocene (Langhian to ? Tortonian), may be defined, which goes before the deposit of marine "upper" Tortonian (Limestones of Portinatx), posterior to the main compressive phase. Clayey interstratifications in these limestones have provided poor paiynological assemblages corresponding to this Tortonian age. In short, the Miocene from Eivissa shows three independent sedimentary cycles which enable to date tectonic episodes concerning this eastern extension of Betic Cordilleras

Percutaneous radiofrequency ablation for hepatocellular carcinoma before liver transplantation: a prospective study with histopathologic comparison.

OBJECTIVE. The aims of this study were to determine the feasibility and efficacy of percutaneous radiofrequency ablation in patients with hepatocellular carcinoma waiting for liver transplantation and to compare the radiologic and pathologic findings. SUBJECTS AND METHODS. Twenty-six patients with 35 hepatocellular carcinomas were addressed for transplantation. Complications of the procedures were recorded. Primary and secondary technique effectiveness and causes of exclusion from the waiting list were assessed. After transplantation, tumor recurrence was evaluated for at least 1 year in all patients. Radiologic-pathologic comparison of the explant was performed. RESULTS. Percutaneous radiofrequency ablation was performed in 21 (81%) patients for 28 tumors. Both minor and major complications occurred in three patients (10% each per session). The rates of primary technique effectiveness, secondary technique effectiveness for percutaneous radiofrequency ablation alone (seven tumors), and combined percutaneous radiofrequency ablation and transcatheter arterial chemoembolization (three tumors) were 56%, 76%, and 86%, respectively. After a mean follow-up of 11.9 months, 16 patients (76%) received transplants, whereas five patients were excluded from the waiting list because of distant tumor progression (n = 3, 14%) or other causes (n = 2, 10%). After transplantation, tumor recurred in one (6%) of 16 patients. Histopathologic examinations were performed for 13 (81%) of 16 patients and showed complete necrosis and satellite nodules in, respectively, 12 (75%) and seven (44%) of 16 tumors. CONCLUSION. Percutaneous radiofrequency ablation can be performed on hepatocellular carcinoma patients waiting for transplantation, allows most patients to undergo transplantation, and does not impair posttransplantation outcomes. The procedure produces complete necrosis of the treated tumor in most cases but is associated with a high rate of satellite nodules. © American Roentgen Ray Society

Giant focal nodular hyperplasia determining Budd-Chiari syndrome: an operative challenge requiring 210 min of liver ischemia

Focal nodular hyperplasia (FNH) is a relatively common benign liver tumor with rare indications to surgery. Early after pregnancy, a 35-year-old woman developed right upper quadrant abdominal pain with fever. A large abdominal mass was palpable. Abdominal CT scan showed a 18-cm FNH substituting all liver segments but S6 and S7, compressing middle and left hepatic vein near their origin, displacing and compressing right hepatic vein, with ascites. Surgery consisted of a left hepatectomy extended to S5-S8 and S1. Main technical challenge was the preservation of the right hepatic vein. Intermittent pedicle clamping was performed, associated with hepatic vascular exclusion with preservation of caval flow; total duration of ischemia was 210 min. The postoperative course was uneventful, except for a transient fall in prothrombin time, and the formation of a sub-diaphragmatic serous collection, which was percutaneously drained. The patient is well 25 months after the operation. To our knowledge, this is the second reported case requiring surgery for a FNH causing a Budd-Chiari syndrome. In these peculiar cases a cumbersome operation may be required, maximizing all precautions to perform a risk-free procedure