Laparoendoscopic single-site surgery adrenalectomy : own experience and matched case-control study with standard laparoscopic adrenalectomy

INTRODUCTION: At our institution, laparoendoscopic single-site surgery (LESS) has been established as a technique for laparoscopic nephrectomy since 2011, and since 2012 in selected cases for adrenalectomy (AE) as well. AIM: To compare LESS AE with standard laparoscopic AE (SLAE). MATERIAL AND METHODS: Between 3/2012 and 7/2014, 35 adrenalectomies were performed. In 18 (51.4%), a LESS approach was chosen. Indications were strictly non-complicated cases (body mass index (BMI) < 34 kg/m(2), tumour ≤ 7 cm, non-malignant aetiology, no previous surgery). All LESS procedures were done by one surgeon. Standard equipment was a 10 mm rigid 0° camera, Triport+, one pre-bent grasper, and a sealing instrument. The approach was pararectal in all cases except one (transumbilical in a slim man). Three patients with LESS were excluded (2 partial AEs only, one adrenal cancer converted to SLAE and then to open surgery). These 15 LESS AE procedures were compared to 15 SLAEs with similar characteristics chosen among 54 SLAEs performed in the period 1/2008–2/2012. RESULTS: In 8 cases (53.3%) of LESS AE, a 3 mm port was added to elevate the liver/spleen. Mean parameters of LESS AE vs. SLAE (Wilcoxon test): maximal tumour diameter 43.7 mm vs. 36.1 mm (p = 0.28), time of surgery 63.3 min vs. 55.3 min (p = 0.22), blood loss 38.0 ml vs. 38.0 ml (p = 0.38), BMI 26.9 kg/m(2) vs. 28.5 kg/m(2) (p = 0.13), discharge from hospital 5.4 days vs. 3.9 days (p = 0.038). There were no complications in either group. CONCLUSIONS: The LESS AE is feasible in selected cases, especially small left-sided tumours in thin patients with no history of previous abdominal operations, but requires an additional port in half of the cases

Volcano evolution and eruptive flux on the thick crust of the Andean Central Volcanic Zone: Ar-40/Ar-39 constraints from Volcan Parinacota, Chile

The 163 k.y. history as well as the chemical and 46 km(3) volumetric evolution of Volcan Parinacota are described in detail by new mapping, stratigraphy, and 57 Ar-40/Ar-39 ages determined from groundmass or sanidine crystals in basaltic andesitic to rhyolitic lavas. A more precise chronology of eruptions and associated eruptive volumes of this central Andean volcano, which was built upon 70-km-thick crust, provides a more complete view of how quickly volcanic edifices are built in this setting and how their magmatic systems evolve during their lifetime. Development of the complex involved initial eruption of andesitic lava flows (163-117 ka) followed by a rhyodacite dome plateau (47-40 ka) synchronous with the onset of the building of a stratocone (52-20 ka), which was later destroyed by a debris avalanche similar to 3 times larger than that at Mount St. Helens in 1980. Dome plateau emplacement occurred faster and later than has previously been published, implying a compressed duration of cone building and introducing a preceding 65 k.y. hiatus. Debris avalanche timing is refined here to be older than 10 but younger than 20 ka. Rapid postcollapse rebuilding of the volcanic edifice is delineated by 16 groundmass and whole-rock Ar-40/Ar-39 ages, which include some of the youngest lava flows dated by this method. Increase in cone-building rate and a continued trend toward more mafic compositions following collapse imply an inter-relationship between the presence of the edifice and flux of magma from the feeding reservoir. Cone-building rates at Parinacota are similar to those at other well-dated volcanoes on thinner crust; however, the distributed basaltic volcanism prevalent in those other arcs is virtually absent both at Parinacota and elsewhere in the Central Volcanic Zone. This suggests that while the hydrous, calc-alkaline magmas that make up the central volcanoes are not significantly retarded by thick crust, primitive, dry basalts might be

Renal hybrid oncocytic/chromophobe tumors. A review

Hybrid oncocytic/chromophobe tumors (HOCT) occur in three clinico-pathologic situations; (1) sporadically, (2) in association with renal oncocytomatosis and (3) in patients with Birt-HoggDubé syndrome (BHD). There are no specific clinical symptoms in patients with sporadic or HOCT associated with oncocytosis/oncocytomatosis. HOCT in patients with BHD are usually encountered on characteristic BHD clinicopathologic background. Sporadic HOCT are composed of neoplastic cells with eosinophilic oncocytic cytoplasm. Tumors are usually arranged in a solidalveolar pattern. Some neoplastic cells may have a perinuclear halo, with no raisinoid nuclei present. HOCT occurring in patients with oncocytomatosis are morphologically identical to sporadic HOCT. HOCT in BHD frequently display 3 morphologic patterns, either in isolation or in combination; (1) An admixture of areas typical of RO and CHRCC, respectively, (2) Scattered chromophobe cells in the background of a typical RO, (3) Large eosinophilic cells with intracytoplasmic vacuoles. The immunohistochemical profiles of HOCT in all clinicopathologic and morphologic groups differ slightly. The majority of tumors express parvalbumin, antimitochondrial antigen and CK 7. CD117 is invariably positive. HOCT show significant molecular genetic heterogeneity. The highest degree of variability in numerical chromosomal changes is present in sporadic HOCT. HOCT in the setting of oncocytomatosis have revealed a lesser degree of variability in the chromosomal numerical aberrations. HOCT in patients with BHD display FLCN gene mutations, which are absent in the other groups. HOCT (all three clinicopathologic groups) seem to behave indolently, as no evidence of aggressive behavior has been documented. However, no report with follow up longer than 10 years has been published

Laparoscopic urinary bladder diverticulectomy combined with photoselective vaporisation of the prostate

INTRODUCTION: Pseudodiverticulum of the urinary bladder is mostly a complication of subvesical obstruction (SO). The gold standard of treatment was open diverticulectomy with adenectomy. A more contemporary resolution is endoscopic, in two steps: the first transurethral resection of the prostate (TURP), the second laparoscopic diverticulectomy (LD). AIM: To present a one-session procedure – photoselective vaporisation of the prostate (PVP) with LD. MATERIAL AND METHODS: From 1/2011 to 6/2014, 14 LDs were performed: 1 LD only, 1 with laparoscopic radical prostatectomy, 12 combined with treatment of benign prostatic hyperplasia (BPH), 4 cases of TURP and LD in the second period. In 8 cases, PVP and LD in one session were combined. These 8 cases are presented. 3D CT cystography was used as a gold standard for assessment of diverticulum. RESULTS: The mean age was 66.5 ±5.5 (57.3–75.1) years, the mean size of the diverticulum 61.8 ±22.1 (26–90) mm. The procedure starts in the lithotomy position. It includes PVP and stenting of the ureter(s). Changing of position and laparoscopy follows: four ports, transperitoneal extravesical approach. Photoselective vaporisation of the prostate was performed using the Green Light Laser HPS (1x) or XPS with cooled fibre MoXy (7x). The mean delivered energy in PVP was 205.1 ±106.4 (120–458) kJ. The mean time of operation was 165.0 ±48.5 (90–255) min. No postoperative complications were observed. One patient underwent TUR incision after 1 year for sclerosis of the bladder neck. CONCLUSIONS: Pseudodiverticulum of the urinary bladder (with or without SO) is a relatively rare disease. One session of PVP (Green Light Laser XPS, MoXy fibre) and laparoscopic (transperitoneal extravesical) diverticulectomy is the preferred method for treatment of subvesical obstruction due to BPH and bladder diverticulum at our institution

A Comprehensive Commentary on the Multilocular Cystic Renal Neoplasm of Low Malignant Potential: A Urologist’s Perspective

Multilocular cystic renal neoplasm of low malignant potential (MCRNLMP) is a cystic renal tumor with indolent clinical behavior. In most of cases, it is an incidental finding during the examination of other health issues. The true incidence rate is estimated to be between 1.5% and 4% of all RCCs. These lesions are classified according to the Bosniak classification as Bosniak category III. There is a wide spectrum of diagnostic tools that can be utilized in the identification of this tumor, such as computed tomography (CT), magnetic resonance (MRI) or contrast-enhanced ultrasonography (CEUS). Management choices of these lesions range from conservative approaches, such as clinical follow-up, to surgery. Minimally invasive techniques (i.e., robotic surgery and laparoscopy) are preferred, with an emphasis on nephron sparing surgery, if clinically feasible.Medicine, Faculty ofNon UBCPathology and Laboratory Medicine, Department ofReviewedFacultyResearcherOthe

Vývoj metod predikce stavů sucha a povodňových situací na základě infiltračních a retenčních vlastností půdního pokryvu ČR:Modelování retenční schopnosti a vláhových podmínek krajiny

Výsledky řešení projektu za tříleté období. Vyhodnocení vybraných složek oběhu vody v krajině a půdě podle modelu AVISO (Vyhodnocení lyzimetrických měření, Vyhodnocení lyzimetrických měření, klimatologická stanice Kuchařovice, Vyhodnocení výsledků z lyzimetrické sítě Ústředního kontrolního a zkušebního ústavu zemědělského (ÚKZÚZ) za období 2001-2005, Váhové lyzimetry na agrometeorologické a lyzimetrické stanici Groß-Enzersdorf (Rakousko), Potenciální evapotranspirace za období září 2006 až srpen 2007, Vláhová bilance travního porostu za období září 2006 až srpen 2007, Radarové odhady srážek a možnosti jejich využití). Sestavení predikce retenční kapacity krajiny a provozní odzkoušení funkčnosti navrženého postupu predikce (Predikce evapotranspirace a základní vláhové bilance travního porostu, Predikce aktuálního deficitu travního porostu). Seznam všech publikací vycházejících z projektu za dobu řešení 2005-2007

Prostate Cancer Diagnostic Algorithm as a “Road Map” from the First Stratification of the Patient to the Final Treatment Decision

The diagnostics of prostate cancer are currently based on three pillars: prostate biomarker panel, imaging techniques, and histological verification. This paper presents a diagnostic algorithm that can serve as a “road map”: from initial patient stratification to the final decision regarding treatment. The algorithm is based on a review of the current literature combined with our own experience. Diagnostic algorithms are a feature of an advanced healthcare system in which all steps are consciously coordinated and optimized to ensure the proper individualization of the treatment process. The prostate cancer diagnostic algorithm was created using the prostate specific antigen and in particular the Prostate Health Index in the first line of patient stratification. It then continued on the diagnostic pathway via imaging techniques, biopsy, or active surveillance, and then on to the treatment decision itself. In conclusion, the prostate cancer diagnostic algorithm presented here is a functional tool for initial patient stratification, comprehensive staging, and aggressiveness assessment. Above all, emphasis is placed on the use of the Prostate Health Index (PHI) in the first stratification of the patients as a predictor of aggressiveness and clinical stage of prostrate cancer (PCa). The inclusion of PHI in the algorithm significantly increases the accuracy and speed of the diagnostic procedure and allows to choose the optimal pathway just from the beginning. The use of advanced diagnostic techniques allows us to move towards to a more advanced level of cancer care. This diagnostics algorithm has become a standard of care in our hospital. The algorithm is continuously validated and modified based on our results