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Omar I, Zaimis T, Townsend A, Ismaiel M, Wilson J, Magee C. Incisional Hernia: A Surgical Complication or Medical Disease? Cureus 2023; 15:e50568. [PMID: 38222215 PMCID: PMC10788045 DOI: 10.7759/cureus.50568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2023] [Indexed: 01/16/2024] Open
Abstract
Incisional hernia (IH) is a frequent complication following abdominal surgery. The development of IH could be more sophisticated than a simple anatomical failure of the abdominal wall. Reported IH incidence varies among studies. This review presented an overview of definitions, molecular basis, risk factors, incidence, clinical presentation, surgical techniques, postoperative care, cost, risk prediction tools, and proposed preventative measures. A literature search of PubMed was conducted to include high-quality studies on IH. The incidence of IH depends on the primary surgical pathology, incision site and extent, associated medical comorbidities, and risk factors. The review highlighted inherent and modifiable risk factors. The disorganisation of the extracellular matrix, defective fibroblast functions, and ratio variations of different collagen types are implicated in molecular mechanisms. Elective repair of IH alleviates symptoms, prevents complications, and improves the quality of life (QOL). Recent studies introduced risk prediction tools to implement preventative measures, including suture line reinforcement or prophylactic mesh application in high-risk groups. Elective repair improves QOL and prevents sinister outcomes associated with emergency IH repair. The watchful wait strategy should be reviewed, and options should be discussed thoroughly during patients' counselling. Risk stratification tools for predicting IH would help adopt prophylactic measures.
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Affiliation(s)
- Islam Omar
- General Surgery, The Hillingdon Hospitals NHS Foundation Trust, Uxbridge, GBR
| | - Tilemachos Zaimis
- General Surgery, Wirral University Teaching Hospital NHS Foundation Trust, Wirral, GBR
| | - Abby Townsend
- General Surgery, Wirral University Teaching Hospital NHS Foundation Trust, Wirral, GBR
| | - Mohamed Ismaiel
- General Surgery, Altnagelvin Area Hospital, Londonderry, GBR
| | - Jeremy Wilson
- General Surgery, Wirral University Teaching Hospital NHS Foundation Trust, Wirral, GBR
| | - Conor Magee
- General Surgery, Wirral University Teaching Hospital NHS Foundation Trust, Wirral, GBR
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2
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Maki H, Kim BJ, Kawaguchi Y, Fernandez-Placencia R, Haddad A, Panettieri E, Newhook TE, Baumann DP, Santos D, Tran Cao HS, Chun YS, Tzeng CWD, Vauthey JN, Vreeland TJ. Incidence of and Risk Factors for Incisional Hernia After Hepatectomy for Colorectal Liver Metastases. J Gastrointest Surg 2023; 27:2388-2395. [PMID: 37537494 DOI: 10.1007/s11605-023-05777-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 07/01/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND Incisional hernia (IH) is common after major abdominal surgery; however, the incidence after hepatectomy for cancer has not been described. We analyzed incidence of and risk factors for IH after hepatectomy for colorectal liver metastases (CLM). METHODS Patients who underwent open hepatectomy with midline or reverse-L incision for CLM at a single institution between 2010 and 2018 were retrospectively analyzed. Postoperative CT scans were reviewed to identify IH and the time from hepatectomy to hernia. Cumulative IH incidence was calculated using competing risk analysis. Risk factors were assessed using Cox proportional hazards model analysis. The relationship between IH incidence and preoperative body mass index (BMI) was estimated using a generalized additive model. RESULTS Among 470 patients (median follow-up: 16.9 months), IH rates at 12, 24, and 60 months were 41.5%, 51.0%, and 59.2%, respectively. Factors independently associated with IH were surgical site infection (HR: 1.54, 95% CI 1.16-2.06, P = 0.003) and BMI > 25 kg/m2 (HR: 1.94, 95% CI 1.45-2.61, P < 0.001). IH incidence was similar in patients undergoing midline and reverse-L incisions and patients who received and did not receive a bevacizumab-containing regimen. The 1-year IH rate increased with increasing number of risk factors (zero: 22.2%; one: 46.8%; two: 60.3%; P < 0.001). Estimated IH incidence was 10% for BMI of 15 kg/m2 and 80% for BMI of 40 kg/m2. CONCLUSION IH is common after open hepatectomy for CLM, particularly in obese patients and patients with surgical site infection. Surgeons should consider risk-mitigation strategies, including alternative fascial closure techniques.
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Affiliation(s)
- Harufumi Maki
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Bradford J Kim
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Yoshikuni Kawaguchi
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Ramiro Fernandez-Placencia
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Antony Haddad
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Elena Panettieri
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Timothy E Newhook
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Donald P Baumann
- Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - David Santos
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Hop S Tran Cao
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Yun Shin Chun
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Ching-Wei D Tzeng
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
| | - Jean-Nicolas Vauthey
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA.
| | - Timothy J Vreeland
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1484, Houston, TX, 77030, USA
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Intramuscular Adipose Tissue Content as a Predictor of Incisional Hernia after Hepatic Resection. World J Surg 2023; 47:260-268. [PMID: 36261603 DOI: 10.1007/s00268-022-06795-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Incisional hernia (IH) is a common surgical complication, with an incidence of 6-31% following major abdominal surgery. This study aimed to investigate the impact of intramuscular adipose tissue content (IMAC) on the incidence of IH in patients who underwent hepatic resection. METHODS Data of 205 patients who underwent open hepatic resection between 2007 and 2019 at Ehime University Hospital were retrospectively analyzed. Patient characteristics, perioperative findings, and body composition were compared between patients with IH and those without IH. The quantity and quality of skeletal muscle, calculated as skeletal muscle index and IMAC, were evaluated using preoperative computerized tomography images. RESULTS Forty (19.5%) patients were diagnosed with IH. The cumulative incidence rates were 15.6% at 1 year and 19.6% at 3 years. On univariate analysis, body mass index, areas of subcutaneous and visceral fat, and IMAC were significantly higher in the IH group than in the non-IH group (p = 0.0023, 0.0070, 0.0047, and 0.0080, respectively). No significant difference in skeletal muscle index was found between the groups (p = 0.3548). The incidence of diabetes mellitus, intraoperative transfusion, and postoperative wound infection was significantly higher in the IH group than in the non-IH group (p = 0.0361, 0.0078, and 0.0299, respectively). On multivariate analysis, a high IMAC and wound infection were independent risk factors for IH (adjusted odds ratio, 2.83 and 4.52, respectively; p = 0.0152 and 0.0164, respectively). CONCLUSION IMAC can predict the incidence of IH in patients undergoing hepatic resection.
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Collagen Remodeling along Cancer Progression Providing a Novel Opportunity for Cancer Diagnosis and Treatment. Int J Mol Sci 2022; 23:ijms231810509. [PMID: 36142424 PMCID: PMC9502421 DOI: 10.3390/ijms231810509] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/01/2022] [Accepted: 09/07/2022] [Indexed: 12/12/2022] Open
Abstract
The extracellular matrix (ECM) is a significant factor in cancer progression. Collagens, as the main component of the ECM, are greatly remodeled alongside cancer development. More and more studies have confirmed that collagens changed from a barrier to providing assistance in cancer development. In this course, collagens cause remodeling alongside cancer progression, which in turn, promotes cancer development. The interaction between collagens and tumor cells is complex with biochemical and mechanical signals intervention through activating diverse signal pathways. As the mechanism gradually clears, it becomes a new target to find opportunities to diagnose and treat cancer. In this review, we investigated the process of collagen remodeling in cancer progression and discussed the interaction between collagens and cancer cells. Several typical effects associated with collagens were highlighted in the review, such as fibrillation in precancerous lesions, enhancing ECM stiffness, promoting angiogenesis, and guiding invasion. Then, the values of cancer diagnosis and prognosis were focused on. It is worth noting that several generated fragments in serum were reported to be able to be biomarkers for cancer diagnosis and prognosis, which is beneficial for clinic detection. At a glance, a variety of reported biomarkers were summarized. Many collagen-associated targets and drugs have been reported for cancer treatment in recent years. The new targets and related drugs were discussed in the review. The mass data were collected and classified by mechanism. Overall, the interaction of collagens and tumor cells is complicated, in which the mechanisms are not completely clear. A lot of collagen-associated biomarkers are excavated for cancer diagnosis. However, new therapeutic targets and related drugs are almost in clinical trials, with merely a few in clinical applications. So, more efforts are needed in collagens-associated studies and drug development for cancer research and treatment.
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Tsunoda J, Nishi T, Ito T, Inaguma G, Matsuzaki T, Seki H, Yasui N, Sakata M, Shimada A, Matsumoto H. Laparoscopic repair of diaphragmatic hernia associating with radiofrequency ablation for hepatocellular carcinoma: A case report. World J Clin Cases 2022; 10:7020-7028. [PMID: 36051126 PMCID: PMC9297430 DOI: 10.12998/wjcc.v10.i20.7020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/21/2022] [Accepted: 05/28/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Radiofrequency ablation (RFA) is an effective treatment for early-stage hepatocellular carcinoma (HCC). Although RFA is a relatively safe technique compared with surgery, several complications have been reported to be following/accompanying this treatment. Delayed diaphragmatic hernia caused by RFA is rare; however, the best surgical approach for its treatment is uncertain. We present a case of laparoscopic repair of diaphragmatic hernia due to RFA.
CASE SUMMARY An 80-year-old woman with segment VIII HCC was treated twice in 5 years with RFA; 28 mo after the second RFA, the patient complained of right hypochondriac pain. Computed tomography revealed that the small intestine was incarcerated in the right thorax. The patient was diagnosed with diaphragmatic hernia and underwent laparoscopic repair by non-absorbable running sutures. The patient’s postoperative course was favorable, and the patient was discharged on postoperative day 12. The diaphragmatic hernia has not recurred 24 mo after surgery.
CONCLUSION Laparoscopic treatment of iatrogenic diaphragmatic hernia is effective and minimally invasive.
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Affiliation(s)
- Junya Tsunoda
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Tomohiko Nishi
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Takafumi Ito
- Department of Internal Medicine, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Gaku Inaguma
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | | | - Hiroaki Seki
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Nobutaka Yasui
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Michio Sakata
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
| | - Akihiko Shimada
- Department of Surgery, Keiyu Hospital, Yokohama 220-8521, Japan
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Grąt M, Morawski M, Krasnodębski M, Borkowski J, Krawczyk P, Grąt K, Stypułkowski J, Maczkowski B, Figiel W, Lewandowski Z, Kobryń K, Patkowski W, Krawczyk M, Wróblewski T, Otto W, Paluszkiewicz R, Zieniewicz K. Incisional Surgical Site Infections After Mass and Layered Closure of Upper Abdominal Transverse Incisions: First Results of a Randomized Controlled Trial. Ann Surg 2021; 274:690-697. [PMID: 34353985 DOI: 10.1097/sla.0000000000005128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To compare the early results of mass and layered closure of upper abdominal transverse incisions. SUMMARY OF BACKGROUND DATA Contrary to midline incisions, data on closure of transverse abdominal incisions are lacking. METHODS This is the first analysis of a randomized controlled trial primarily designed to compare mass with layered closure of transverse incisions with respect to incisional hernias. Patients undergoing laparotomy through upper abdominal transverse incisions were randomized to either mass or layered closure with continuous sutures. Incisional surgical site infection (incisional-SSI) was the primary end-point. Secondary end-points comprised suture-to-wound length ratio (SWLR), closure duration, and fascial dehiscence (clinicatrials.gov NCT03561727). RESULTS A total of 268 patients were randomized to either mass (n=134) or layered (n=134) closure. Incisional-SSIs occurred in 24 (17.9%) and 8 (6.0%) patients after mass and layered closure, respectively (P =0.004), with crude odds ratio (OR) of 0.29 [95% confidence interval (95% CI) 0.13-0.67; P =0.004]. Layered technique was independently associated with fewer incisional-SSIs (OR: 0.29; 95% CI 0.12-0.69; P =0.005). The number needed to treat, absolute, and relative risk reduction for layered technique in reducing incisional-SSIs were 8.4 patients, 11.9%, and 66.5%, respectively. Dehiscence occurred in one (0.8%) patient after layered closure and in two (1.5%) patients after mass closure (P >0.999). Median SWLR were 8.1 and 5.6 (P <0.001) with median closure times of 27.5 and 25.0 minutes (P =0.044) for layered and mass closures, respectively. CONCLUSIONS Layered closure of upper abdominal transverse incisions should be preferred due to lower risk of incisional-SSIs and higher SWLR, despite clinically irrelevant longer duration.
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Affiliation(s)
- Michał Grąt
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | - Marcin Morawski
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | | | - Jan Borkowski
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | - Piotr Krawczyk
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | - Karolina Grąt
- Second Department of Clinical Radiology, Warsaw, Poland
| | - Jan Stypułkowski
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | | | - Wojciech Figiel
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | - Zbigniew Lewandowski
- Department of Epidemiology and Biostatistics, Medical University of Warsaw, Warsaw, Poland
| | - Konrad Kobryń
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | | | - Marek Krawczyk
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
| | | | - Włodzimierz Otto
- Department of General, Transplant and Liver Surgery, Warsaw, Poland
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Iida H, Tani M, Hirokawa F, Ueno M, Noda T, Takemura S, Nomi T, Nakai T, Kaibori M, Kubo S. Risk factors for incisional hernia according to different wound sites after open hepatectomy using combinations of vertical and horizontal incisions: A multicenter cohort study. Ann Gastroenterol Surg 2021; 5:701-710. [PMID: 34586100 PMCID: PMC8452478 DOI: 10.1002/ags3.12467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/07/2021] [Accepted: 04/13/2021] [Indexed: 12/11/2022] Open
Abstract
Background: Although several risk factors for incisional hernia after hepatectomy have been reported, their relationship to different wound sites has not been investigated. Therefore, this study aimed to examine the risk factors for incisional hernia according to various wound sites after hepatectomy. Methods: Patients from the Osaka Liver Surgery Study Group who underwent open hepatectomy using combinations of vertical and horizontal incisions (J-shaped incision, reversed L-shaped incision, reversed T-shaped incision, Mercedes incision) between January 2012 and December 2015 were included. Incisional hernia was defined as a hernia occurring within 3 y after surgery. Abdominal incisional hernia was classified into midline incisional hernia and transverse incisional hernia. The risk factors for each posthepatectomy incisional hernia type were identified. Results: A total of 1057 patients met the inclusion criteria. The overall posthepatectomy incisional hernia incidence rate was 5.9% (62 patients). In the multivariate analysis, the presence of diabetes mellitus and albumin levels <3.5 g/dL were identified as independent risk factors. Moreover, incidence rates of midline and transverse incisional hernias were 2.4% (25 patients), and 2.3% (24 patients), respectively. In multivariate analysis, the independent risk factor for transverse incisional hernia was the occurrence of superficial or deep incisional surgical site infection, and interrupted suturing for midline incisional hernia. Conclusions: Risk factors for incisional hernia after hepatectomy depend on the wound site. To prevent incisional hernia, running suture use might be better for midline wound closure. The prevention of postoperative wound infection is important for transverse wounds, under the presumption of preoperative nutrition and normoglycemia.
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Affiliation(s)
- Hiroya Iida
- Department of SurgeryShiga University of Medical ScienceShigaJapan
| | - Masaji Tani
- Department of SurgeryShiga University of Medical ScienceShigaJapan
| | - Fumitoshi Hirokawa
- Department of General and Gastroenterological SurgeryOsaka Medical CollegeOsakaJapan
| | - Masaki Ueno
- Second Department of SurgeryWakayama Medical UniversityWakayamaJapan
| | - Takehiro Noda
- Department of Gastroenterological SurgeryGraduate School of MedicineOsaka UniversityOsakaJapan
| | - Shigekazu Takemura
- Department of Hepato‐Biliary‐Pancreatic SurgeryOsaka City University Graduate School of MedicineOsakaJapan
| | - Takeo Nomi
- Department of SurgeryNara Medical UniversityNaraJapan
| | - Takuya Nakai
- Department of SurgeryFaculty of MedicineKinki UniversityOsakaJapan
| | - Masaki Kaibori
- Department of SurgeryKansai Medical UniversityOsakaJapan
| | - Shoji Kubo
- Department of Hepato‐Biliary‐Pancreatic SurgeryOsaka City University Graduate School of MedicineOsakaJapan
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Guilbaud T, Feretti C, Holowko W, Garbarino GM, Marchese U, Sarran A, Beaussier M, Gayet B, Fuks D. Laparoscopic Major Hepatectomy: Do Not Underestimate the Impact of Specimen Extraction Site. World J Surg 2020; 44:1223-1230. [PMID: 31748884 DOI: 10.1007/s00268-019-05285-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND In laparoscopic major hepatectomy, analysis of outcomes according to specimen extraction site remains poorly described. The aim was to compare postoperative outcomes according to specimen extraction site. METHODS From 2000 to 2017, all laparoscopic major hepatectomies were reviewed and postoperative outcomes were analyzed according to specimen extraction site: subcostal (Group 1), midline (Group 2), or suprapubic (Group 3) incision. RESULTS Among 163 patients, 15 (9.2%) belonged to Group 1, 49 (30.1%) in Group 2, and 99 (60.7%) in Group 3. The proportion of right-sided, left-sided, or central hepatectomies, mortality, and overall and severe complications were comparable between groups. Group 1 had larger tumors (61 vs. 38 vs. 47 mm; P = 0.014), higher operative time (338 vs. 282 vs. 260 min; P < 0.008), higher adjacent organ resection rate (46.6 vs. 16.3 vs. 7.1%; P < 0.001), and tended to increase pulmonary complications (40.0 vs. 12.2 vs. 18.2%; P = 0.064). In Group 2, a previous midline incision scar was more frequently used for specimen extraction site (65.3 vs. 26.6 and 30.3%, Group 1 and 3; P < 0.001). Postoperative incisional hernia was observed in 16.4% (n = 23) and was more frequent in Group 2 (26.6 vs. 6.6% and 10.1%, Group 1 and Group 3; P = 0.030). Finally, Group 2 (HR 2.63, 95% CI 1.41-3.53; P = 0.032) was the only independent predictive factor of postoperative incisional hernia. CONCLUSIONS While using a previous incision makes sense, the increased risk of postoperative incisional hernia after midline incision promotes the suprapubic incision.
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Affiliation(s)
- Théophile Guilbaud
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France. .,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France. .,Department of Digestive Disease, Institut Mutualiste Montsouris, Université Paris Descartes, 42 Boulevard Jourdan, 75014, Paris, France.
| | - Carlotta Feretti
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
| | - Waclaw Holowko
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
| | - Giovanni Maria Garbarino
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
| | - Ugo Marchese
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
| | - Anthony Sarran
- Department of Radiology and Medical Imaging, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France
| | - Marc Beaussier
- Department of Anesthesiology, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France
| | - Brice Gayet
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
| | - David Fuks
- Department of Digestive, Oncological and Metabolic Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014, Paris, France.,Université Paris Descartes, 15 rue de l'école de médecine, 75005, Paris, France
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Pilkington JJ, Davies TW, Schaff O, Alexander MY, Pritchett J, Wilkinson FL, Sheen AJ. Systemic biomarkers currently implicated in the formation of abdominal wall hernia: A systematic review of the literature. Am J Surg 2020; 222:56-66. [PMID: 33189313 DOI: 10.1016/j.amjsurg.2020.10.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Surgery to the abdominal wall is ubiquitous worldwide and hernia treatment is challenging and expensive, posing a critical need to tailor treatment to individual patient risk-factors. In this systematic review, we consider specific systemic factors with potential as biomarkers of hernia formation. METHODS A healthcare database-assisted search, following PRISMA guidelines, identified journal articles for inclusion and analysis. RESULTS 14 biomarker studies were selected, comparing hernia patients and hernia-free controls, focusing on markers of extracellular matrix (ECM) remodelling and collagen turnover. Matrix metalloproteinase-2 was increased in patients with inguinal hernia. Markers of type IV collagen synthesis were increased in patients with abdominal wall hernia; while markers of fibrillar collagen synthesis were reduced. Additional other ECM signalling proteins differ significantly within published studies. CONCLUSION We identify a lack of high-quality evidence of systemic biomarkers in tailoring treatment strategies relative to patient-specific risks, but recognise the potential held within biomarker-based diagnostic studies to improve management of hernia pathogeneses.
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Affiliation(s)
- J J Pilkington
- Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, UK; Department of Academic Hernia Surgery, Manchester University NHS Foundation Trust, Manchester, UK
| | - T W Davies
- Department of Anaesthesia, Royal Free London NHS Foundation Trust, London, UK; UCLH NIHR Biomedical Research Centre, Institute of Sport and Exercise Health, University College London Centre for Altitude Space and Extreme Environment Medicine, London, UK
| | - O Schaff
- Trust Library Services, Manchester University NHS Foundation Trust, Manchester, UK
| | - M Y Alexander
- Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, UK
| | - J Pritchett
- Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, UK
| | - F L Wilkinson
- Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, UK
| | - A J Sheen
- Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, UK; Department of Academic Hernia Surgery, Manchester University NHS Foundation Trust, Manchester, UK.
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10
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Wabitsch S, Schulz P, Fröschle F, Kästner A, Fehrenbach U, Benzing C, Haber PK, Denecke T, Pratschke J, Fikatas P, Schmelzle M. Incidence of incisional hernia after laparoscopic liver resection. Surg Endosc 2020; 35:1108-1115. [PMID: 32124059 DOI: 10.1007/s00464-020-07475-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 02/19/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Minimally invasive techniques have been broadly introduced to liver surgery during the last couple of years. In this study, we aimed to report the incidence and potential risk factors for incisional hernia (IH) as well as health-related quality of life (HRQoL) after laparoscopic liver resections (LLR). METHODS All patients undergoing LLR between January 2014 and June 2017 were contacted for an outpatient hernia examination. In all eligible patients, photo documentation of the scar was performed and IH was evaluated by clinical examination and by ultrasound. Patients also completed a questionnaire to evaluate IH-specific symptoms and HRQoL. Obtained results were retrospectively analyzed with regard to patients' characteristics, perioperative outcomes and applied minimally invasive techniques, such as multi-incision laparoscopic liver surgery or hand-assisted/single-incision laparoscopic surgery (HALS/SILS). RESULTS Of 184 patients undergoing surgery, 161 (87.5%) met the inclusion criteria and 49 patients (26.6%) participated in this study. After a median time of 26 months (range 19-50 months) after surgery, we observed an overall incidence of IH of 12%. Five of 6 patients were overweight or obese (BMI ≥ 25) and 5 of 6 hernias were located at the umbilical site. Univariate analysis suggested the performance status at time of operation (ASA score ≥ 3; HR 5.616, 95% CI 1.012-31.157, p = 0.048) and the approach (HALS/SILS, HR 6.571, 95% CI 1.097-39.379, p = 0.039) as potential risk factors for IH. A higher frequency of hernia-related physical restrictions (HRR; p = 0.058) and a decreased physical functioning (p = 0.17) were noted in patients with IH; however, both being short of statistical significance. CONCLUSION Advantages of laparoscopic surgery with regard to low rates of IH can be translated to minimally invasive liver surgery. Even though there are low rates of IH, patients with poor performance status at the time of operation should be monitored closely. While patients' characteristics are hard to influence, it might be worth focusing on surgical factors such as the approach and the closure of the umbilical site to further minimize the rate of IH.
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Affiliation(s)
- S Wabitsch
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - P Schulz
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - F Fröschle
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A Kästner
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - U Fehrenbach
- Department of Radiology, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - C Benzing
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - P K Haber
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - T Denecke
- Department of Radiology, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - J Pratschke
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - P Fikatas
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - M Schmelzle
- Department of Surgery,, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Campus Charité Mitte
- Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
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Thankam FG, Palanikumar G, Fitzgibbons RJ, Agrawal DK. Molecular Mechanisms and Potential Therapeutic Targets in Incisional Hernia. J Surg Res 2018; 236:134-143. [PMID: 30694748 DOI: 10.1016/j.jss.2018.11.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/27/2018] [Accepted: 11/20/2018] [Indexed: 12/21/2022]
Abstract
The pathophysiology underlying the formation, progression, and surgical healing of incisional hernia (IH) that develops as a major complication associated with abdominal laparotomy is poorly understood. The proposed mechanisms include the switch of collagen phenotype and the proliferation of abnormal fibroblasts after surgery. The focus of this article was to critically review the cellular, biochemical, and potential molecular events associated with the development of IH. The disturbance in collagen homeostasis with alterations in the expression of collagen subtypes, including type 1, type 3, type 4, and type 5, and impairment in the transdifferentiation of fibroblasts to myofibroblasts are discussed. The phenotype switch of wound-repair fibroblasts results in mechanically compromised extracellular matrix that triggers the proliferation of abnormal fibroblasts. High-mobility group box 1 could be involved in wound progression, whereas signaling events mediated by tumor necrosis factor β1, connective tissue growth factor, lysyl oxidase, and hypoxia-inducible factor 1 play significant role in the wound healing response. Thus, the ratio of tumor necrosis factorβ1: high-mobility group box 1 could be a critical determinant of the underlying pathology. Potential target sites for therapeutic intervention in the management of IH are recognized.
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Affiliation(s)
- Finosh G Thankam
- Departments of Clinical and Translational Science and Surgery, Creighton University School of Medicine, Omaha, Nebraska
| | - Gunasekar Palanikumar
- Departments of Clinical and Translational Science and Surgery, Creighton University School of Medicine, Omaha, Nebraska
| | - Robert J Fitzgibbons
- Departments of Clinical and Translational Science and Surgery, Creighton University School of Medicine, Omaha, Nebraska
| | - Devendra K Agrawal
- Departments of Clinical and Translational Science and Surgery, Creighton University School of Medicine, Omaha, Nebraska.
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12
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Chen-Xu J, Bessa-Melo R, Graça L, Costa-Maia J. Incisional hernia in hepatobiliary and pancreatic surgery: incidence and risk factors. Hernia 2018; 23:67-79. [DOI: 10.1007/s10029-018-1847-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/29/2018] [Indexed: 12/30/2022]
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13
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Mass Continuous Suture versus Layered Interrupted Suture in Transverse Abdominal Incision Closure after Liver Resection. World J Surg 2017; 40:2237-44. [PMID: 27393054 DOI: 10.1007/s00268-016-3617-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Abdominal incision closure technique seriously influences patient prognosis. Most studies have focused on the different suture techniques and materials on midline incision, while little data are available in wide transverse or oblique incisions after liver resection (LR). The aim of the present study is to compare the two major incision suture methods after LR in our institute: Mass continuous suture (group P) and layered interrupted suture (group S). STUDY DESIGN 258 patients undergoing LR with abdominal transverse or oblique incisions were prospectively enrolled. They were divided into two groups according to different abdominal incision suture methods and compared with the preoperative, intraoperative parameters, and postoperative wound complications. RESULTS There were 118 patients in group P and 140 patients in group S, which was similar in general condition, primary disease, liver, and renal function. Incision length, total operation time, intraoperative blood loss, or perioperative antibiotics use were not different between the two groups. However, abdominal incision closure time and interval time for stitches removing after operation was significantly shorter in group P than group S (both p < 0.001). After a median follow-up of 16 months, the incidence of wound infection and fat liquefaction was more than two times higher in group S than group P, which, however, was not statistically different. Moreover, there was no difference in wound disruption or incisional hernia between the two groups. CONCLUSIONS Although similar in occurrence of postoperative wound complications, mass continuous suture with polydioxanone seemed to be more timesaving in incision closure and motivated in wound healing.
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14
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Feng GX, Li J, Yang Z, Zhang SQ, Liu YX, Zhang WY, Ye LH, Zhang XD. Hepatitis B virus X protein promotes the development of liver fibrosis and hepatoma through downregulation of miR-30e targeting P4HA2 mRNA. Oncogene 2017; 36:6895-6905. [PMID: 28846110 DOI: 10.1038/onc.2017.291] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 02/06/2023]
Abstract
Hepatitis B virus (HBV)-induced liver necrosis takes great part in liver cirrhosis progression. However, less is known about whether hepatitis B virus X protein (HBx) has effect on liver fibrosis. Here, we report that HBV leads to liver fibrosis and hepatocarcinogenesis through miR-30e targeting P4HA2. HBV transgenic mouse was treated by CCl4 to generate a model of liver fibrosis. A crucial enzyme catalyzing collagen formation, prolyl 4-hydroxylase subunit α2 (P4HA2) was evaluated by immunohistochemistry, western blotting or quantitative reverse transcription-PCR analysis. The function of HBV-modulated P4HA2 in hepatoma cell growth in vitro and in vivo was analyzed by EdU, MTT, colony-forming assay and animal transplantation assay. HBV transgenic mice exhibited more collagen deposition in liver after intraperitoneal injection of CCl4. P4HA2 was dramatically augmented in liver samples of HBV transgenic mice, clinical liver cirrhosis and liver cancer patients. Mechanistically, HBx was capable of inducing P4HA2 through suppressing miR-30e, in which miR-30e could target P4HA2 mRNA 3' untranslated region in liver cancer cells. HBx inhibited the miR-30e expression through increasing methylation of CpG islands in its promoter mediated by EZH2-formed complexes. Functionally, HBx-elevated P4HA2 enhanced the collagen deposition in the liver in vivo and in vitro, leading to liver fibrosis and liver cancer progression. In conclusion, HBx promotes the development of liver fibrosis and hepatocellular carcinoma through miR-30e targeting P4HA2 mRNA. We provide novel perspective on how HBx induces liver fibrosis.
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Affiliation(s)
- G X Feng
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - J Li
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - Z Yang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - S Q Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - Y X Liu
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - W Y Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
| | - L H Ye
- State Key Laboratory of Medicinal Chemical Biology, Department of Biochemistry, College of Life Sciences, Nankai University, Tianjin, China
| | - X D Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cancer Research, College of Life Sciences, Nankai University, Tianjin, China
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15
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Pedersen R, Sung M, Difronzo AL. Long-Term Nononcologic Outcomes for Laparoscopic Liver Resection: Improvement over Open Hepatectomy? Am Surg 2016. [DOI: 10.1177/000313481608201020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Prior studies of laparoscopic liver resection (LLR) have evaluated long-term outcomes in terms of cancer survival, but few have evaluated nononcologic outcomes. This study analyzes long-term nondisease-specific complications associated with LLR and open liver resection (OLR). We performed a retrospective single-institution review of patients undergoing liver resection for any reason from January 2005 to December 2014. Long-term complication was defined as any complication not related to the primary disease process, and occurring more than 90 days after surgery, emphasizing incisional hernia (IH) and small bowel obstruction (SBO). A total of 208 patients were included in the OLR group and 79 patients in the LLR group. Forty-one patients (19.6%) developed IH after OLR, whereas only six patients (7.5%) developed IH after LLR ( P = 0.01). About 3.8 per cent of patients developed IH requiring surgical repair in both groups. Seven patients developed SBO (3.4%) after OLR; no patient developed SBO after LLR. Median time to development of complications was 13.8 months (range 3–54 months) after OLR compared with 8.5 months after LLR (range 6–36 months). Male gender, body mass index, prior abdominal surgery, and OLR were independent risk factors for development of long-term complications. There is a higher incidence of nondisease-specific complications after OLR than LLR.
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Affiliation(s)
- Rose Pedersen
- From Kaiser Permanente Los Angeles Medical Center, Los Angeles, California
| | - Michael Sung
- From Kaiser Permanente Los Angeles Medical Center, Los Angeles, California
| | - Andrew L. Difronzo
- From Kaiser Permanente Los Angeles Medical Center, Los Angeles, California
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16
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Nilsson JH, Strandberg Holka P, Sturesson C. Incisional hernia after open resections for colorectal liver metastases - incidence and risk factors. HPB (Oxford) 2016; 18:436-41. [PMID: 27154807 PMCID: PMC4857068 DOI: 10.1016/j.hpb.2016.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 02/14/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Incisional hernia is one of the most common complications after laparotomy. The aim of this retrospective study was to investigate incidence, location and risk factors for incisional hernia after open resection for colorectal liver metastases including the use of perioperative chemotherapy and targeted therapy evaluated by computed tomography. METHODS Patients operated for colorectal liver metastases between 2010 and 2013 were included. Incisional hernia was defined as a discontinuity in the abdominal fascia observed on computed tomography. RESULTS A total of 256 patients were analyzed in regard to incisional hernia. Seventy-eight patients (30.5%) developed incisional hernia. Hernia locations were midline alone in 66 patients (84.6%) and involving the midline in another 8 patients (10.3%). In multivariate analysis, preoperative chemotherapy >6 cycles (hazard ratio 2.12, 95% confidence interval 1.14-3.94), preoperative bevacizumab (hazard ratio 3.63, 95% confidence interval 1.86-7.08) and incisional hernia from previous surgery (hazard ratio 3.50, 95% confidence interval 1.98-6.18) were found to be independent risk factors. CONCLUSIONS Prolonged preoperative chemotherapy and also preoperative bevacizumab were strong predictors for developing an incisional hernia. After an extended right subcostal incision, the hernia location was almost exclusively in the midline.
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Affiliation(s)
- Jan H. Nilsson
- Department of Surgery, Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Peter Strandberg Holka
- Department of Surgery, Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden
| | - Christian Sturesson
- Department of Surgery, Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden,Correspondence Department of Surgery, Skåne University Hospital, S-221 85 Lund, Sweden. Tel: +46 46 172347. Fax: +46 46 172335.
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17
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Henriksen NA, Mortensen JH, Lorentzen L, Ågren MS, Bay-Jensen AC, Jorgensen LN, Karsdal MA. Abdominal wall hernias-A local manifestation of systemically impaired quality of the extracellular matrix. Surgery 2016; 160:220-227. [PMID: 27085685 DOI: 10.1016/j.surg.2016.02.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 01/24/2016] [Accepted: 02/09/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Throughout life, inguinal hernia develops in approximately every fourth man, some of whom develop multiple hernias. If patients at risk of developing multiple hernias could be identified by a serologic biomarker, treatment might be able to be tailored and improved. Evidence suggests that abdominal wall hernia formation is associated with altered collagen metabolism. The aim of this study was to evaluate biomarkers for type IV and V collagen turnover in patients with multiple hernias and control subjects without hernia. METHODS Venous blood was collected from 88 men (mean age, 62 years) with a history of more than 3 hernia repairs and 86, age-matched men without hernias. Biomarkers for synthesis of collagen type IV (P4NP) and type V (P5CP) as well as breakdown (C4M and C5M) were measured in serum by validated, solid-phase, competitive assays. Collagen turnover was indicated by the ratio between the biomarker for synthesis and breakdown. RESULTS Type IV collagen turnover was 1.4-fold increased in patients with multiple hernias compared to control subjects (P < .001), whereas type V collagen turnover was 1.7-fold decreased (P < .001). Diagnostic power of P5CP was 0.83 (95%C.I.:0.77-0.89), P < .001. CONCLUSION Patients with multiple hernias exhibit increased turnover of type IV collagen and a decreased turnover of type V collagen, demonstrating systemically altered collagen turnover. Biomarkers for type V collagen turnover may be used to identify patients at risk for or with multiple hernias.
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Affiliation(s)
- Nadia A Henriksen
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
| | | | - Lea Lorentzen
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Magnus S Ågren
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark; Copenhagen Wound Healing Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - Lars N Jorgensen
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
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