Seguimiento remoto de la recaída de hernia después de procesos abiertos de plastia de la pared abdominal– estudio prospectivo que incluye 142 pacientes

ResumenAntecedentesLa hernia incisional sigue siendo una complicación común de las laparotomías. El propósito del estudio es analizar la recidiva de hernia en un año, después de varios métodos abiertos de plastia de la pared abdominal.Material y métodosEstudio longitudinal prospectivo, en el que se incluyó a 142 pacientes. Se analizaron: los datos individuales, el grado de obesidad, las variaciones intraoperatorias de la presión abdominal, la intensidad del dolor postoperatorio, las complicaciones postoperatorias y los tipos de plastias de la pared abdominal: simple y con malla de polipropileno.ResultadosEl análisis del grupo estudiado estableció una tasa general de reincidencia de 16.9% y, en los 4 procesos, del 40.74% en caso de plastias simples, del 16.07% después de plastias onlay, del 6.97% después de plastias retromusculares y del 6.25% después de la sustitución completa de la avería parietal. Mediante el análisis de los datos obtenidos, la recidiva de la hernia fue significativamente correlacionada con: el grado de obesidad, las variaciones de la presión intraabdominal, el dolor postoperatorio y el tipo de procedimiento realizado.ConclusionesLa recurrencia de la hernia fue más frecuente en las plastias simples. Entre los procesos con malla, a la plastia onlay se le asignó una mayor tasa de recaídas y complicaciones postoperatorias. La recurrencia de la hernia fue más frecuente en las variaciones de la presión intraabdominal y con el dolor postoperatorio aumentado. La realización de la ecografía puede aumentar la precisión de la presencia de la hernia.AbstractBackgroundThe incisional hernia continues to be a frequent complication of laparotomies. The purpose of study is the analysis of hernia disease relapse after one year after different open plasties methods of the abdominal wall.Material and methodsA prospective longitudinal study was performed that included 142 patients. An analysis was performed on the individual data, the level of obesity, intra-surgical variations in intra-abdominal pressure, the intensity of post-surgical pain, the post-surgical complications, and the types of plasties of abdominal wall, simple and with polypropylene mesh.ResultsThe analysis of studied group showed a general rate of relapse of 16.9%, and within the 4 procedures, 40.74% in the case of simple plasties, of 16.07% after the only plasties, 6.97% after the retro-muscular plasties, and 6.25% after the full substitution of parietal defect. On analysing the collected, hernia relapse was statistically significantly related to the level of obesity, variations in intra-abdominal pressure, post-surgical pain, and the type of procedure performed.ConclusionsHernia is a frequent complication of laparotomies. Hernia relapse was more frequent in the case of simple plasties. Among the mesh procedures, the onlay plasty showed a higher rate of relapse and post-surgical complications. Hernia relapse was more frequent in the case of variations of intra-abdominal pressure, and with increased post-surgical pain. The use of an echography examination may increase the accuracy of the presence of hernia disease

Colorectal cancer: an update upon the diagnostic and therapeutic transdiciplinary approach

Scop: Prezentarea unor date actualizate referitoare la rolul ONCOTEAM în diagnosticul și terapia pacientului cu cancerului colorectal (CRC). Material și metode: În perioada 2018-2023, 147 de pacienți cu CRC au beneficiat de un abord individualizat. Evaluarea imagistică preoperatorie cu CT-scan/MRI cu difuzie a fost urmată de o descriere de tip ”hartă” a informațiilor pe baza cărora s-a efectuat intervenția chirurgicală și procesarea histopatologică conform metodologiei descrise anterior de echipa noastră în jurnalelel Diagnostics (DOI: 10.3390/diagnostics11020314) și Journal of the Belgian Society of Radiology (DOI: 10.5334/jbsr.3186). Examinările genetice au fost efectuate la indicațiile oncologului iar terapia post-operatorie a luat în considerare profilul molecular al celulelor tumorale. Rezultate: Utilizând acest protocol adaptat, am obținut un număr mediu de 15±2.23 limfonoduli prelevați per caz. Numărul depozitelor tumorale a fost, de asemenea, crescut și a dus la o supra-stadializare a 15% din cazuri. Utilizând o valoare a ”lymph node ratio” de 0.15, am obținut valori superioare celor obținute la abordarea clasică a 120 cazuri examinate anterior (p=0.002). Determinările genetice efectuate în timp au dus la o începere rapidă a terapiei oncologice individualizate și, deși profilul genei BRAF V600E este dificil a fi evaluat în țesuturi incluse în parafină, extracția ADN și determinările PCR au fost adecvate în toate cazurile examinate. Concluzii: Abordarea transdiciplinară a CRC poate fi efectuată doar dacă fiecare membru al echipei este implicat conștiincios în fiecare pas al diagnosticului sau terapiei. Costurile determinărilor au fost parțial acoperite în cadrul proiectelor PCCF 20/2018 și 10127/13/2021.Aim: To present an update regarding the role of the ONCOTEAM in the diagnosis and therapy of colorectal cancer (CRC). Materials and methods: During 2018-2023, 147 patients with CRC have benefited by an individualized approach. Preoperatively evaluation was done with CT-scan/diffusion-weighted MRI and a lymph node station map was typed. The next step consisted on surgical removal, based on the indications included in the map. Histopathological examination was based on the methods described by our team previously (DOI: 10.3390/diagnostics11020314; DOI: 10.5334/jbsr.3186). Genetic examinations were done based on the indications of the oncologist and the post-operative therapy was performed according to the molecular profile. Results: Based on the in-house adapted protocol, the median number of harvested lymph nodes per case was 15±2.23. The number of identified deposits was also significant and up-staged the tumors in 15% of the cases. The lymph node ratio value, using a cut-off of 0.15, was also superior to the classic approach of other 120 cases (p=0.002). The genetic examinations proved to be useful for an earlier start of post-operative therapy, without any cost for the patients. As regarding pre-analytical factors, although BRAF V600E gene profile is hard to be detected from paraffin-embedded tissues, the DNA extraction and PCR examinations were succesful in all of the cases. Conclusions: A proper transdiciplinary approach can be done only if any member of the team is attentively involved in each step of the diagnosis and therapy. The costs were partially supported by the projects PCCF 20/2018, and 10127/13/2021

nucleAIzer : A Parameter-free Deep Learning Framework for Nucleus Segmentation Using Image Style Transfer

Single-cell segmentation is typically a crucial task of image-based cellular analysis. We present nucleAIzer, a deep-learning approach aiming toward a truly general method for localizing 2D cell nuclei across a diverse range of assays and light microscopy modalities. We outperform the 739 methods submitted to the 2018 Data Science Bowl on images representing a variety of realistic conditions, some of which were not represented in the training data. The key to our approach is that during training nucleAIzer automatically adapts its nucleus-style model to unseen and unlabeled data using image style transfer to automatically generate augmented training samples. This allows the model to recognize nuclei in new and different experiments efficiently without requiring expert annotations, making deep learning for nucleus segmentation fairly simple and labor free for most biological light microscopy experiments. It can also be used online, integrated into CellProfiler and freely downloaded at www.nucleaizer.org. A record of this paper's transparent peer review process is included in the Supplemental Information.Peer reviewe

nucleAIzer: A Parameter-Free Deep Learning Framework for Nucleus Segmentation Using Image Style Transfer

Single-cell segmentation is typically a crucial task of image-based cellular analysis. We present nucleAIzer, a deep-learning approach aiming toward a truly general method for localizing 2D cell nuclei across a diverse range of assays and light microscopy modalities. We outperform the 739 methods submitted to the 2018 Data Science Bowl on images representing a variety of realistic conditions, some of which were not represented in the training data. The key to our approach is that during training nucleAIzer automatically adapts its nucleus-style model to unseen and unlabeled data using image style transfer to automatically generate augmented training samples. This allows the model to recognize nuclei in new and different experiments efficiently without requiring expert annotations, making deep learning for nucleus segmentation fairly simple and labor free for most biological light microscopy experiments

Serrated pathway adenocarcinomas: molecular and immunohistochemical insights into their recognition.

Colorectal adenocarcinomas (CRC) developed through serrated pathway seem to present particular behavior compared with the non-serrated ones, but recognition of them is difficult to do. The aim of our paper was to establish some criteria to facilitate their identification.In 170 consecutive CRCs, we performed immunohistochemical staining with Cytokeratin 7 (CK7) and Cytokeratin 20 (CK20) and also with p53 and MLH-1. At the same time, we analyzed BRAF and K-ras mutations and the microsatellite status of CRC.26.47% of cases expressed CK7, and 16.47% were CK20-negative. Diffuse positivity for CK7 was associated in the proximal colon with CK20 negativity or weak positivity, BRAF mutations, lack of K-ras mutations, and p53 and MLH-1 negativity. All these cases were microsatellite-unstable and were diagnosed in stage II. Those cases from the distal colon and rectum that expressed CK7 were K-ras-mutated and had low p53 index and MLH-1 positivity, independent of the CK20 expression.CK7, associated with MLH-1 and p53 expression, and also with the microsatellite status, BRAF and K-ras pattern, might be used to identify the CRC potentially going through serrated pathway. The serrated pathway adenocarcinomas of the proximal colon that do not display the morphological features of this pattern are more frequent CK7+/p53-/MLH-1-/BRAF-mutated/K-ras-wt/MSI cases, but those located in the distal colorectal segments seem to be CK7+/CK20+/p53-/MLH-1+/BRAF wt/K-ras-mutated/MSS cases

Abdominal Compartment Syndrome as a Multidisciplinary Challenge. A Literature Review

Abdominal Compartment Syndrome (ACS), despite recent advances in medical and surgical care, is a significant cause of mortality. The purpose of this review is to present the main diagnostic and therapeutic aspects from the anesthetical and surgical points of view. Intra-abdominal hypertension may be diagnosed by measuring intra-abdominal pressure and indirectly by imaging and radiological means. Early detection of ACS is a key element in the ACS therapy. Without treatment, more than 90% of cases lead to death and according with the last reports, despite all treatment measures, the mortality rate is reported as being between 25 and 75%. There are conflicting reports as to the importance of a conservative therapy approach, although such an approach is the central to treatment guidelines of the World Society of Abdominal Compartment Syndrome, Decompressive laparotomy, although a backup solution in ACS therapy, reduces mortality by 16-37%. The open abdomen management has several variants, but negative pressure wound therapy represents the gold standard of surgical treatment

Számítógépes tomográfia és hasűrinyomás-mérés alkalmazása az óriás medián hegsérvek kezelésében = Application of computed tomography and abdominal pressure measurement in the treatment of giant incisional hernias

Absztrakt: Bevezetés: Az óriás hasfali defektusok kezelése kihívást jelent a sebészek számára. CT-vizsgálattal meghatározható a sérvzsák és a hasüreg térfogata közötti arány, megállapítva a téraránytalanság mértékét, amely a műtét utáni hasűri nyomás mértékének kifejezője lehet. Célkitűzés: A posztoperatív óriás hasfali defektusok kivizsgálásában alkalmazott CT-vizsgálat jelentőségének alátámasztása, a rekonstrukciós módszer hatékonyságának elemzése a hasűrinyomás-méréssel. Módszer: Prospektív kutatást végzünk klinikánkon, vizsgálva az óriás hegsérvvel kezelt betegeinket, akiknél műtét előtt hasi CT-vizsgálat készül. A hasfal rekonstrukciója feszülésmentesen, retromuscularisan elhelyezett Prolene hálóval és sérvzsákból készített peritoneumlebenyekkel történik. Műtét alatt és műtét után hasűri nyomást mérünk, posztoperatívan 2, 4, 6 hónap után telefonon keresztül követjük betegeinket. Eredmények: Elért eredményeinket három eset kapcsán mutatjuk be. 1. eset: A 48 éves nőbetegnél óriás kiújult hegsérv, több társbetegség állt fenn. Testtömegindexe 43,6, a hasfali defektus átmérője 155 mm, a hegsérv térfogata 1536,63 cm3 volt. A műtét utáni 7. napon hazabocsátottuk. 2. eset: Az 51 éves férfi betegnél multilocularis óriás hegsérv keletkezett, testtömegindexe 26,85 volt. A két hasfali defektus átmérője 123 mm és 105 mm, térfogatuk együttes értéke 406,41 cm3 volt. A műtét utáni 5. napon a beteget elbocsátottuk. 3. eset: A 67 éves férfi beteg testtömegindexe 23,7, a hasfali defektus mérete 100 mm, térfogata 258,10 cm3 volt. A beteget a műtét utáni 4. napon elbocsátottuk. Következtetés: A preoperatív CT-vizsgálat adatai fontosak az alkalmazott műtéti technika megválasztásában. A sérvzsák és a háló együttes alkalmazása az óriás hegsérvek rekonstrukciójában olcsó és feszülésmentes műtéti technikát biztosít a fokozott rizikóval rendelkező betegek esetében. A technika rövid távú hatékonyságának elemzésére a húgyhólyagon keresztül mért hasűri nyomás a választandó módszer. Orv Hetil. 2020; 161(9): 347–353. | Abstract: Introduction: Giant abdominal wall defects represent a major challenge for surgeons. CT scan can determine the ratio between the volume of the hernia sac and the abdominal cavity, determining the extent of the disproportion, which is related to the postoperative abdominal pressure value. Aim: Confirmation of the significance of CT examination in postoperative giant abdominal wall defects, effectiveness analysis of the reconstruction method by abdominal pressure measurement. Method: A prospective study is conducted on patients with giant incisional hernias, with preoperatively performed abdominal CT scan. Tension-free abdominal wall reconstruction is realized with retromuscular Prolene mesh and hernial sac. Abdominal pressure is measured during and after surgery. Patients’ follow-up is performed through phone after 2–4–6 months. Results: We present our results through three cases. First case: 48-year-old woman presented a giant recurrent incisional hernia and multiple comorbidities. Maximum defect diameter was: 155 mm, hernia volume: 1536.63 cm3, BMI = 43.6. The patient was discharged after seven days. Second case: 51-year-old male patient presented with multilocular giant incisional hernia, BMI = 26,85. Maximum diameter of the two wall defects were 123 mm and 105 mm, their total volume: 406.41cm3. The patient was discharged after five days. Third case: A 67-year-old male patient presented with giant incisional hernia. The abdominal defect size was 100/100 mm (LL/CC), volume: 258.10 cm3, BMI = 23.7. The patient was discharged after four days. Conclusion: The proper surgical technique can be established based on the preoperative CT scan. Abdominal wall reconstruction with retromuscular Prolene mesh and hernial sac provides a cheap, reliable, tension-free technique. The technique’s short-term efficacy can be determined by abdominal pressure measuring through the bladder. Orv Hetil. 2020; 161(9): 347–353