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Journal of Gastrointestinal Surgery :... Dec 2021Surgeons encounter neutropenic patients through elective or emergency consultation with increasing regularity. As medical management continues to extend the lives of... (Review)
Review
Surgeons encounter neutropenic patients through elective or emergency consultation with increasing regularity. As medical management continues to extend the lives of patients with benign hematologic diseases, hematologic malignancies, solid malignancies, or iatrogenic neutropenia, more patients are presenting with infectious complications caused and/or complicated by their neutropenia. This leaves surgeons in the difficult position of managing medically fragile patients with unusual presentations of common disease processes. These patients often fall outside of classical guidelines and treatment pathways. Many studies addressing these issues are retrospective and non-randomized. Here, we review common emergency gastrointestinal surgery scenarios and their management in the setting of a neutropenic patient. While biliary disease, appendicitis, anorectal disease, and perforations will be covered in detail, an extensive appreciation of a patient's medical or oncologic disease course and appropriate utilization of consultants such as interventional radiology, gastroenterology, and hematology is often necessary.
Topics: Appendicitis; Emergencies; Humans; Immunocompromised Host; Neutropenia; Retrospective Studies
PubMed: 34506017
DOI: 10.1007/s11605-021-05116-9 -
Microorganisms Aug 2016The intracellular life style of chlamydia and the ability to cause persistent infections with low-grade replication requires tests with high analytical sensitivity to... (Review)
Review
The intracellular life style of chlamydia and the ability to cause persistent infections with low-grade replication requires tests with high analytical sensitivity to directly detect C. trachomatis (CT) in medical samples. Nucleic acid amplification tests (NAATs) are the most sensitive assays with a specificity similar to cell culture and are considered the method of choice for CT detection. In addition, NAATs can be performed on various clinical specimens that do not depend on specific transport and storage conditions, since NAATs do not require infectious bacteria. In the case of lower genital tract infections, first void urine and vaginal swabs are the recommended specimens for testing males and females, respectively. Infections of anorectal, oropharyngeal and ocular epithelia should also be tested by NAAT analysis of corresponding mucosal swabs. In particular, anorectal infections of men who have sex with men (MSM) should include evaluation of lymphogranuloma venereum (LGV) by identification of genotypes L1, L2 or L3. Detection of CT antigens by enzyme immunoassay (EIAs) or rapid diagnostic tests (RDTs) are unsuitable due to insufficient sensitivity and specificity. Recent PCR-based RDTs, however, are non-inferior to standard NAATs, and might be used at the point-of-care. Serology finds application in the diagnostic work-up of suspected chronic CT infection but is inappropriate to diagnose acute infections.
PubMed: 27681919
DOI: 10.3390/microorganisms4030025 -
Vojnosanitetski Pregled Oct 2008Fournier's gangrene (FG) represents a necrotizing infection of the skin and subcutaneous soft tissue of the external genitalia and perineum. It arises as a result of...
BACKGROUND
Fournier's gangrene (FG) represents a necrotizing infection of the skin and subcutaneous soft tissue of the external genitalia and perineum. It arises as a result of propagation of anorectal, urogenital and skin infections. The principles of treatment include improving general condition of a patient, debridement of wound, excision of necrotic tissue, combined antibiotic therapy, hyperbaric oxygen therapy and reconstructive procedures. It is a rare but very serious condition which regardless to aggressive treatment can lead to a lethal outcome in up to 20-30% of patients.
CASE REPORT
Since the year 2000 we have treated six patients with FG. We presented the course and positive treatment outcome in a 65-year-old male patient with numerous comorbid conditions, nonregulated insulin-dependent diabetes, hypertension, previous myocardial infarction, chronic viral hepatitis and thrombocytopenia, rehabilitation was complicated with heart failure, atrial fibrillation and pulmonary thromboembolism. The treatment consisted of two extensive debridement of the wound with removing necrotic tissue, drainage, consolidation of state of health, correction of his blood sugar levels and thrombocytopenia, antimycotic and combination of three antibiotics and hyperbaric oxygen therapy. In two delayed surgical procedures reconstruction of a large defect of the urethra was performed.
CONCLUSION
A patient with numerous and serious comorbid conditions with FG could recover as a result of teamwork of urologists, infective medicine specialists, cardiologists, endocrinologist, vascular and plastic surgeons.
Topics: Aged; Fournier Gangrene; Humans; Male
PubMed: 19024125
DOI: 10.2298/vsp0810775m -
Advances in Clinical and Experimental... 2013Fournier's gangrene is a necrotizing, life-threatening fasciitis of the perineal, genital and perianal region which can spread to the abdominal wall, causing soft-tissue... (Review)
Review
Fournier's gangrene is a necrotizing, life-threatening fasciitis of the perineal, genital and perianal region which can spread to the abdominal wall, causing soft-tissue necrosis and sepsis. It is usually a polymicrobial infection. The prevalence of the disease is low, but the mortality rate remains high. Several urogenital and anorectal diseases, as well as diabetes mellitus and conditions associated with the immunosuppressive reaction, may predispose an individual to the development of Fournier's gangrene. A diagnosis of Fournier's gangrene is clinical, but radiological examinations may be helpful in establishing the extent of the necrotic process. The treatment consists mainly of aggressive surgical debridement, broad-spectrum antibiotic combinations and hyperbaric oxygen therapy. The Fournier's gangrene severity index (FGSI) score can be used to evaluate patients. Because of its heterogeneity and aggressiveness, Fournier's gangrene is a very serious and complex medical condition that should be under the care of an interdisciplinary team with access not only to the best surgical and critical care but also to a hyperbaric chamber.
Topics: Fournier Gangrene; Humans; Severity of Illness Index
PubMed: 23468272
DOI: No ID Found -
Journal of Virology Apr 2020Zika virus (ZIKV) is a major human pathogen. ZIKV can replicate in female and male reproductive organs, thus facilitating the human-human transmission cycle. Viral...
Zika virus (ZIKV) is a major human pathogen. ZIKV can replicate in female and male reproductive organs, thus facilitating the human-human transmission cycle. Viral shedding in the semen can increase the risk of ZIKV transmission through sexual mode. Therefore, the vaginal and anorectal mucosa are relevant sites for ZIKV infection. However, the pathobiology of ZIKV transmission through the rectal route is not well understood. Here, we utilize a mouse model system to investigate the immunopathological consequences following ZIKV infection of the rectal mucosa compared to a subcutaneous route of infection. We show that ZIKV-rectal inoculation results in viremia with subclinical infection. ZIKV infects the mucosal epithelium and submucosal dendritic cells, inducing immune and inflammatory cell infiltration. Rectal transmission of ZIKV resulted in the generation of serum-neutralizing antibody responses. Mass cytometry analyses of splenocytes showed a significantly reduced level of inflammatory monocyte and neutrophil cellular responses in the rectal route group. Furthermore, immunological priming through the rectal mucosa with an attenuated ZIKV strain resulted in significant protection from lethal subcutaneous ZIKV challenge, further eliciting robust memory CD4-positive (CD4) and CD8 T-cell and ZIKV-specific serum-neutralizing antibody responses. Thus, our study provides deeper immunopathobiological insights on rectal transmission and highlights a rational strategy for mucosal immunization. This model system recapitulates clinical aspects of human ZIKV disease outcome, where most infections are well controlled and result in subclinical and asymptomatic outcomes. Zika virus is a clinically significant human pathogen that is primarily transmitted and spread by species mosquitoes but is also sexually transmissible. The recent pandemic in the Americas led to an unprecedented increase of newborn babies with developmental brain and eye abnormalities. To date, there is no licensed vaccine or therapeutic intervention available for the fight against ZIKV. Understanding the sexual transmission of ZIKV through vaginal and rectal routes is necessary to restrict virus transmission and spread. This study examines the early immunological and pathological consequences of rectal and subcutaneous routes of ZIKV infection using a mouse model. We characterized the primary target cells of ZIKV infection and the subsequent mucosal immune responses to infection, and we demonstrate the protective effect of mucosal rectal immunization using an attenuated ZIKV strain. This mucosal vaccination approach can be further developed to prevent future ZIKV outbreaks.
Topics: Aedes; Animals; Antibodies, Neutralizing; Antibodies, Viral; Cell Line; Chlorocebus aethiops; Disease Models, Animal; Epithelial Cells; Epithelium; Female; Immunity; Immunization; Male; Mice; Mice, Inbred C57BL; Mucous Membrane; Rectum; Semen; T-Lymphocytes; Vaccination; Vero Cells; Zika Virus; Zika Virus Infection
PubMed: 32051274
DOI: 10.1128/JVI.00067-20 -
Emerging Microbes & Infections Oct 2018Zika virus (ZIKV) has elicited global concern due to its unique biological features, unusual transmission routes, and unexpected clinical outcomes. Although ZIKV...
Zika virus (ZIKV) has elicited global concern due to its unique biological features, unusual transmission routes, and unexpected clinical outcomes. Although ZIKV transmission through anal intercourse has been reported in humans, it remains unclear if ZIKV is detectable in the stool, if it can infect the host through the anal canal mucosa, and what the pathogenesis of such a route of infection might be in the mouse model. Herein, we demonstrate that ZIKV RNA can be recovered from stools in multiple mouse models, as well as from the stool of a ZIKV patient. Remarkably, intra-anal (i.a.) inoculation with ZIKV leads to efficient infection in both Ifnar1 and immunocompetent mice, characterized by extensive viral replication in the blood and multiple organs, including the brain, small intestine, testes, and rectum, as well as robust humoral and innate immune responses. Moreover, i.a. inoculation of ZIKV in pregnant mice resulted in transplacental infection and delayed fetal development. Overall, our results identify the anorectal mucosa as a potential site of ZIKV infection in mice, reveal the associated pathogenesis of i.a. infection, and highlight the complexity of ZIKV transmission through anal intercourse.
Topics: Animals; Feces; Female; Humans; Immunity, Innate; Intestinal Mucosa; Male; Mice; Mice, Inbred C57BL; Pregnancy; Pregnancy Complications; Rectum; Virus Replication; Virus Shedding; Zika Virus; Zika Virus Infection
PubMed: 30333476
DOI: 10.1038/s41426-018-0170-6 -
The Yale Journal of Biology and Medicine Dec 2014Increased anorectal human papillomavirus (HPV) infection is related to the recent trends in sexual behavior in both homosexual and heterosexual groups and prevalence of... (Review)
Review
Increased anorectal human papillomavirus (HPV) infection is related to the recent trends in sexual behavior in both homosexual and heterosexual groups and prevalence of infection with human immunodeficiency virus (HIV). Clinical presentation and natural history depend on the serotype involved. HPV 6 and 11 are found in the benign wart. Local control can be achieved with a wide selection of surgical and topical techniques. HPV 16, 18, and 31 are found in dysplastic lesions and have the potential to progress to invasive anal squamous cell carcinoma. Recognition and early management of dysplastic lesions is crucial to prevent the morbidity and mortality associated with anal cancer. While low-grade lesions can be closely observed, high-grade lesions should be eradicated. Different strategies can be used to eradicate the disease while preserving anorectal function. Studies on the efficacy of vaccination on anorectal HPV showed promising results in select population groups and led to the recent expansion of current vaccination recommendations.
Topics: Anus Diseases; Humans; Papillomaviridae; Papillomavirus Infections; Rectal Diseases; Vaccination
PubMed: 25506286
DOI: No ID Found -
Clinics in Colon and Rectal Surgery Sep 2019This article reviews the epidemiology, diagnosis, and management of common viral infections of the perianal skin and anorectum including herpes simplex virus, human... (Review)
Review
This article reviews the epidemiology, diagnosis, and management of common viral infections of the perianal skin and anorectum including herpes simplex virus, human immune deficiency virus, and molluscum contagiosum. Human papilloma virus infection is reviewed in the subsequent article.
PubMed: 31507343
DOI: 10.1055/s-0039-1687829 -
PloS One 2017Anorectal malformations (ARMs) are one of the commonest anomalies in neonates. Both laparoscopically assisted anorectal pull-through (LAARP) and posterior sagittal... (Comparative Study)
Comparative Study Meta-Analysis Review
Laparoscopically Assisted Anorectal Pull-Through versus Posterior Sagittal Anorectoplasty for High and Intermediate Anorectal Malformations: A Systematic Review and Meta-Analysis.
OBJECTIVE
Anorectal malformations (ARMs) are one of the commonest anomalies in neonates. Both laparoscopically assisted anorectal pull-through (LAARP) and posterior sagittal anorectoplasty (PSARP) can be used for the treatment of ARMs. The aim of this systematic review and meta-analysis is to compare these two approaches in terms of intraoperative and postoperative outcomes.
METHODS
MEDLINE, Embase, Web of Science and the Cochrane Library were searched from 2000 to August 2016. Both randomized and non-randomized studies, assessing LAARP and PSARP in pediatric patients with high/intermediate ARMs, were included. The primary outcome measures were operative time, length of hospital stay and total postoperative complications. The second outcome measures were rectal prolapse, anal stenosis, wound infection/dehiscence, anorectal manometry, Kelly's clinical score, and Krickenbeck classification. The quality of the randomized and non-randomized studies was assessed using the Cochrane Collaboration's Risk of Bias tool and Newcastle-Ottawa scale (NOS) respectively. The quality of evidence was assessed by GRADEpro.
RESULTS
From 332 retrieved articles, 1, 1, and 8 of randomized control, prospective and retrospective studies, respectively, met the inclusion criteria. The randomized clinical trial was judged to be of low risk of bias, and the nine cohort studies were of moderate to high quality. 191 and 169 pediatric participants had undergone LAARP and PSARP, respectively. Shorter hospital stays, less wound infection/dehiscence, higher anal canal resting pressure, and a lower incidence of grade 2 or 3 constipation were obtained after LAARP compared with PSARP group values. Besides, the LAARP group had marginally less total postoperative complications. However, the result of operative time was inconclusive; meanwhile, there was no significant difference in rectal prolapse, anal stenosis, anorectal manometry, Kelly's clinical score and Krickenbeck classification.
CONCLUSION
For pediatric patients with high/intermediate anorectal malformations, LAARP is a better option compared with PSARP. However, the quality of evidence was very low to moderate.
Topics: Anal Canal; Anorectal Malformations; Humans; Infant, Newborn; Laparoscopy; Length of Stay; Postoperative Complications; Rectum; Treatment Outcome
PubMed: 28099464
DOI: 10.1371/journal.pone.0170421 -
Lancet (London, England) Dec 2022Between May and November, 2022, global outbreaks of human monkeypox virus infection have been reported in more than 78 000 people worldwide, predominantly in men who...
BACKGROUND
Between May and November, 2022, global outbreaks of human monkeypox virus infection have been reported in more than 78 000 people worldwide, predominantly in men who have sex with men. We describe the epidemiological and clinical characteristics of monkeypox virus infection in cisgender (cis) and transgender (trans) women and non-binary individuals assigned female sex at birth to improve identification and understanding of risk factors.
METHODS
International collaborators in geographical locations with high numbers of diagnoses of monkeypox virus infection were approached and invited to contribute data on women and non-binary individuals with confirmed monkeypox virus infection. Contributing centres completed deidentified structured case-report spreadsheets, adapted and developed by participating clinicians, to include variables of interest relevant to women and non-binary individuals assigned female at birth. We describe the epidemiology and clinical course observed in the reported infections.
FINDINGS
Collaborators reported data for a total of 136 individuals with monkeypox virus infection who presented between May 11 and Oct 4, 2022, across 15 countries. Overall median age was 34 years (IQR 28-40; range 19-84). The cohort comprised 62 trans women, 69 cis women, and five non-binary individuals (who were, because of small numbers, grouped with cis women to form a category of people assigned female at birth for the purpose of comparison). 121 (89%) of 136 individuals reported sex with men. 37 (27%) of all individuals were living with HIV, with a higher proportion among trans women (31 [50%] of 62) than among cis women and non-binary individuals (six [8%] of 74). Sexual transmission was suspected in 55 (89%) trans women (with the remainder having an unknown route of transmission) and 45 (61%) cis women and non-binary individuals; non-sexual routes of transmission (including household and occupational exposures) were reported only in cis women and non-binary individuals. 25 (34%) of 74 cis women and non-binary individuals submitted to the case series were initially misdiagnosed. Overall, among individuals with available data, rash was described in 124 (93%) of 134 individuals and described as anogenital in 95 (74%) of 129 and as vesiculopustular in 105 (87%) of 121. Median number of lesions was ten (IQR 5-24; range 1-200). Mucosal lesions involving the vagina, anus, or oropharynx or eye occurred in 65 (55%) of 119 individuals with available data. Vaginal and anal sex were associated with lesions at those sites. Monkeypox virus DNA was detected by PCR from vaginal swab samples in all 14 samples tested. 17 (13%) individuals were hospitalised, predominantly for bacterial superinfection of lesions and pain management. 33 (24%) individuals were treated with tecovirimat and six (4%) received post-exposure vaccinations. No deaths were reported.
INTERPRETATION
The clinical features of monkeypox in women and non-binary individuals were similar to those described in men, including the presence of anal and genital lesions with prominent mucosal involvement. Anatomically, anogenital lesions were reflective of sexual practices: vulvovaginal lesions predominated in cis women and non-binary individuals and anorectal features predominated in trans women. The prevalence of HIV co-infection in the cohort was high.
FUNDING
None.
Topics: Infant, Newborn; Male; Humans; Female; Adult; Monkeypox virus; Mpox (monkeypox); Homosexuality, Male; Sexual and Gender Minorities; Disease Outbreaks
PubMed: 36403584
DOI: 10.1016/S0140-6736(22)02187-0