Fournier gangrene: role of imaging

MR imaging of the penis: What a radiologist needs to know!

Magnetic resonance imaging (MRI) plays an important role in imaging of penile pathologies due to its excellent soft tissue resolution and multiplanar imaging capabilities. This imaging review describes the MRI protocols and anatomical considerations in penile pathologies. MRI not only serves as a complementary tool to ultrasound in evaluation of trauma, infections, inflammatory diseases, and malignancies, but is also used as the definitive imaging modality for evaluation of penile prosthesis and complex cases.

Fournier's Gangrene: clinical case review and analysis of risk factors for mortality

BACKGROUND

Fournier's Gangrene is a severe surgical infectious disease, and various risk factors can increase its mortality rate. The purpose of this study is to retrospectively analyze the clinical characteristics and laboratory data of Fournier's Gangrene patients, followed by an analysis of mortality-related risk factors. This study has no secondary objectives.

METHODS

This study included 46 hospitalized patients diagnosed with Fournier's Gangrene at Suzhou Traditional Chinese Medicine Hospital from December 2013 to March 2024. Clinical data for all patients were extracted from the electronic medical records system. The collected data included gender, age, duration of illness, length of hospital stay, sites of infection involvement, comorbidities, white blood cell count, hematocrit, albumin, blood glucose, creatinine, serum sodium, serum potassium upon admission, microbial culture results, and patient outcomes (survival/death). The Simplified Fournier Gangrene Severe Index (SFGSI) was used to score all patients. Patients were categorized into survival and death groups based on clinical outcomes. Differences between categorical variables were compared using the χ² test or Fisher's exact test. Differences between numerical variables were compared using Student's t-test or the Mann-Whitney U test. Binary logistic regression was employed to analyze the risk factors for mortality in Fournier's Gangrene.

RESULTS

Among the 46 Fournier's Gangrene patients, 39 were male (84.8%) and 7 were female (15.2%). The age ranged from 17 to 86 years, with a median age of 61 years. Fourteen cases (30.4%) were confined to the perianal area, 26 cases (56.5%) had fascial necrosis involving the perianal, perineal, and genital regions, while 6 cases (13.0%) extended to the abdominal wall. At a 3-month postoperative follow-up, 43 patients (93.5%) survived, while 3 patients (6.5%) died shortly after admission due to severe illness. Based on the outcome, patients were divided into survival and death groups with 43 and 3 cases, respectively. Significant differences were observed between the two groups in terms of age (P<0.05), extension to the abdominal wall (P<0.01), hematocrit (P<0.01), albumin (P<0.01), SFGSI (P<0.01), and SFGSI>2 (P<0.01). Binary logistic regression analysis indicated that decreased hematocrit was an independent risk factor for mortality in Fournier's Gangrene patients.

CONCLUSION

This study provides a detailed analysis of the clinical characteristics and risk factors for mortality in Fournier's Gangrene patients. The primary outcome of this study is that a decreased hematocrit is an independent risk factor for predicting mortality in FG patients. These findings offer valuable prognostic insights for clinicians, underscoring the importance of early identification and correction of reduced hematocrit to improve patient outcomes and survival rates.

Volumetric computed tomography measurements as predictors for outcomes in a cohort of Fournier's gangrene patients

PURPOSE

This study evaluates the prognostic value of CT findings, including volumetric measurements, in predicting outcomes for patients with Fournier gangrene (FG), focusing on mortality, ICU admission, hospital stay length, and healthcare costs.

METHODS

A retrospective study was conducted on 38 FG patients who underwent CT scans before surgical debridement. We analyzed demographic data, CT volumetric measurements, and clinical outcomes using logistic and linear regression models.

RESULTS

No single CT measurement significantly predicted mortality or ICU admission. The best model for mortality prediction included age, air volume, NSTI score, and male sex, with an AUC of 0.911. Intubation likelihood was modeled with an AUC of 0.913 using age, NSTI score, and visceral to subcutaneous fat ratio. The ICU admission model achieved an AUC of 0.677. Hospital stay was predicted by air volume (β = 0.0002656, p = 0.0505) with an adjusted R-squared of 0.1287. Air volume significantly predicted hospital costs (β = 2.859, p = 0.00558), resulting in an adjusted R-squared of 0.2165.

CONCLUSION

Volumetric CT findings provide valuable prognostic insights for FG patients, suggesting a basis for informed clinical decisions and resource allocation. Further validation in larger, multi-center studies is recommended to develop robust predictive models for FG outcomes.

Management of Fournier's gangrene in a newborn: A rare case report and literature review

INTRODUCTION

Fournier's gangrene (FG) in neonates is less common than in adults, but this case can lead to a poor prognosis. FG is a disease of the genital, perianal, and perineal areas characterized by necrotizing infections. Here, we report a case of a 24-day-old male infant diagnosed with Fournier's gangrene involving the scrotum.

CASE PRESENTATION

The patient presented with scrotal swelling, fever, erythema, and insect bites on the penile tip that had gradually extended to the proximal area and bilateral scrotum. On physical examination, indurated grayish and blackish-brown scrotal skin with sharp distinction from the surrounding normal skin, erythema, purulence, ulceration, and necrotic tissue were observed. Abdominal X-ray and scrotal ultrasonography revealed gaseous distension of the scrotal region, free fluid on bilateral testes, and enlargement of bilateral testicles. Immediate surgical debridement, along with broad-spectrum antibiotics, was initiated, and a microbiological culture identified the presence of Pseudomonas aeruginosa. The patient demonstrated the completed healing of the surgical wound after thirty days of surgical intervention.

DISCUSSION

Fournier's gangrene in neonates is a sporadic case. Our patient presented with multiple predisposing factors, including insect bites and poor hygiene, underscoring the need for heightened clinical suspicion in vulnerable populations. Prompt recognition and intervention are critical, given the rapid progression of FG.

CONCLUSION

This case underscores the importance of timely diagnosis and early initiation of surgical and medical interventions in neonatal Fournier's gangrene, particularly in cases involving the scrotum.

Capturing anatomy in computed tomography scans for genital pathology

PURPOSE

In this cross-sectional study, we aimed to characterize how frequently the anatomy of interest (AOI) was excluded when evaluating genital pathology using the current CT pelvis protocol recommended by the American College of Radiology and evaluate how AOI exclusion affects patient management.

METHODS

We retrospectively reviewed medical records, using diagnosis and CPT codes, of patients admitted with genital pathology who obtained a CT scan at our institution from July 1, 2020-April 30, 2023. Baseline patient demographics were included. Data about each index CT scan (scan obtained at our institution) were recorded and assessed for exclusion of the AOI. Statistical analysis was performed to determine the rate of AOI exclusion and to compare patient management between patients with AOI excluded versus those without AOI exclusion.

RESULTS

113 presentations for genital pathology included an index CT scan and were included for analysis. Patients were primarily men (98%) with a mean age of 53.1 years (SD 13.9). The most common diagnoses were Fournier's gangrene (35%), scrotal abscess (22%) and unspecified infection (19%). 26/113 scans (23%) did not capture the entire AOI. When the AOI was missed during the index scan, there was a higher rate of obtaining additional scans (38% vs. 21%), but a similar rate of intervention (77% vs. 63%) when compared to index scans that captured the entire AOI. 35 scans (31%) had protocol-extending instructions; index scans that captured the entire AOI were more likely to have specific protocol-extending instructions (38% vs. 8% p < 0.01).

CONCLUSIONS

Creating a specific CT protocol for genital pathology could decrease the amount of inappropriate irradiation and improve AOI capture rates without relying on specific request for protocol deviation.

Fournier's Gangrene Surgical Reconstruction: A Systematic Review

Fournier's gangrene (FG) is a rare form of necrotizing fasciitis of the perineal, genital, or perianal region. It is characterized by an aggressive course and high mortality rate, over 20%. FG demands immediate treatment including resuscitation maneuvers, intravenous antibiotic therapy and early surgical debridement. Background/Objectives: The gold-standard treatment for FG is surgical reconstruction. However, up to date, no precise guidelines exist. Thus, we decided to systematically review the literature, focusing on FG contemporary approaches to reconstructive surgery, aiming to analyze the various reconstructive strategies and their specific indications. Methods: A systematic review was carried out according to the PRISMA statement by searching various databases from April 2014 to April 2024, using the terms ''Fournier Gangrene OR Fournier Gangrene Reconstruction OR Fournier Gangrene Treatment OR Fournier Gangrene Plastic Surgery OR Necrotizing Fasciitis OR Necrotizing Fasciitis AND Reconstruction". The eligibility criteria included original studies aimed at discussing FG reconstruction with at least three clinical cases. Results: The final synthesis included 38 articles, and 576 reconstructions were described. Of these, 77.6% were minimally invasive strategies (direct closure, secondary healing, grafts, and local random flaps), while more invasive reconstructions (loco-regional flaps based on known vascular anatomy) were adopted in 22.4%. No free flaps were reported. Conclusions: FG requires immediate medical interventions including broad-spectrum antibiotic therapy, surgical debridement, adjuvant therapies, and reconstructive surgeries. Taking into account the anatomical characteristics of the inguinal-crural region, skin grafts and local random flaps could offer versatile and effective reconstructions for most FG cases, while the more invasive strategies should be reserved for very few cases. Future research is warranted to define an FG dedicated reconstruction protocol.

Early diagnosis of necrotizing fasciitis: Imaging techniques and their combined application

Necrotizing fasciitis is a clinical, surgical emergency characterized by an insidious onset, rapid progression, and a high mortality rate. The disease's mortality rate has remained high for many years, mainly because of its atypical clinical presentation, which prevents many cases from being diagnosed early and accurately, resulting in patients who may die from uncontrollable septic shock and multi-organ failure. But unfortunately, no diagnostic indicator can provide a certain early diagnosis of NF, and clinical judgement of NF is still based on the results of various ancillary tests combined with the patient's medical history, clinical manifestations, and the physician's experience. This review provides a brief overview of the epidemiological features of NF and then discusses the most important laboratory indicators and scoring systems currently employed to diagnose NF. Finally, the latest progress of several imaging techniques in the early diagnosis of NF and their combined application with other diagnostic indices are highlighted. We point out promising research directions based on an objective evaluation of the advantages and shortcomings of different methods, which provide a basis for further improving the early diagnosis of NF.

Fournier's gangrene: a review of predictive scoring systems and practical guide for patient management

This article aims to provide a practical guide for patient management and an overview of the predictive scorings for Fournier's gangrene (FG) that are available to aid clinicians. A literature was performed reviewing currently used scoring systems for FG and presenting a practical guide for its management based on the available evidence. There are four specific scoring systems available for the assessment of FG although few other non-specific and generic tools also exist. These specific tools include Laboratory Risk Indicator for Necrotizing Fasciitis, Fournier's Gangrene Severity Index, Uludag Fournier's Gangrene Severity Index, and Simplified Fournier's Gangrene Severity Index and help calculate expected mortality. Our proposed algorithm covers primary assessment, resuscitative interventions, initial investigations, urgent care, post-operative care, and long-term follow-up. The management of the FG patient can be divided into initial resuscitation, surgical debridement, ongoing ward management with antibiotic therapy, wound reconstruction, and long-term follow-up. Each facet of care is vital and requires multidisciplinary team expertise for optimal outcomes. Whilst mortality continues to improve, it remains significant, reflecting the severe and life-threatening nature of FG. More research is certainly needed into how this care is individualised, and to ensure that long-term outcomes in FG include quality of life measures after discharge.

Preoperative computed tomography in Fournier's gangrene does not delay time to surgery

PURPOSE

Fournier's gangrene (FG), a rapidly progressive necrotizing soft tissue infection of the external genitalia and perineum, necessitates urgent surgical debridement. The time to surgery effect of preoperative computed tomography (CT) in managing this condition is yet to be fully explored. The purpose of this study was to assess whether obtaining a preoperative CT in patients with FG impacts the time to surgical intervention.

METHODS

This was a single-center retrospective study of patients who underwent CT prior to surgical debridement of FG during a 9-year period vs patients who did not undergo CT. In 76 patients (male = 39, mean age = 51.8), 38 patients with FG received a preoperative CT, and 38 patients with FG did not receive CT prior to surgical debridement. Time to operating room and outcome metrics were compared between CT and non-CT groups.

RESULTS

The time from hospital presentation to surgical intervention was not significantly different between patients who underwent CT and those who did not (6.65 ± 3.71 vs 5.73 ± 4.33 h, p = 0.37). There were also no significant differences in cost ($130,000 ± $102,000 vs $142,000 ± $152,000, p = 0.37), mortality (8 vs 7, p = 1), duration of hospital stay (15.5 ± 15 vs 15.7 ± 11.6 days, p = 0.95), average intensive care unit stay (5.82 ± 5.38 days vs 6.97 ± 8.58 days, p = 0.48), and APACHE score (12 ± 4.65 vs 13.9 ± 5.6, p =0.12).

CONCLUSION

Obtaining a preoperative CT did not delay surgical intervention in patients with FG.

Fournier's Gangrene Secondary to Perforated Sigmoid Adenocarcinoma Within an Incarcerated Inguinal Hernia

Colon cancer is the third most common cancer worldwide. Approximately one-fifth of colon cancers will present emergently due to obstruction or perforation. Necrotizing soft tissue infection is a rare presentation of perforated colon cancer and represents a surgical emergency due to high mortality rate.  A man in his 80s presented with several days of scrotal pain and weakness. On physical exam he was found to have scrotal edema and erythema and bilateral inguinal hernias. Imaging revealed a large scrotal abscess and concern for necrotizing soft tissue infection. He was taken to the operating room for surgical debridement and exploration and was discovered to have perforated colon within an incarcerated inguinal hernia. He underwent exploratory laparotomy with sigmoid resection and end colostomy creation. Pathology returned demonstrating invasive sigmoid adenocarcinoma. Fournier's gangrene requires a high index of suspicion. It is a rapidly progressing infection associated with high mortality. Early initiation of antibiotics and surgical debridement are mainstays of treatment. When associated with perforated colonic malignancy, workup must include imaging of the chest, abdomen, and pelvis as well as carcinoembryonic antigen (CEA) level to complete staging. Fournier's gangrene secondary to perforated sigmoid adenocarcinoma is a unique presentation. Treatment first involves antibiotics and aggressive surgical debridement. Once the patient is stabilized, further oncologic workup should be completed to determine treatment course.

Management of Fournier's gangrene: a practical guide for clinicians

Fournier's gangrene is a localised form of necrotising fasciitis affecting the external genitalia, perineal and perianal regions. Although rare, it is associated with high rates of morbidity and mortality, so clinician awareness is essential for prompt treatment. Risk factors include diabetes mellitus, hypertension, chronic alcoholism and immunosuppression. Perineal pain in patients with sepsis should be treated with a high level of suspicion and early surgical referral is required as prompt debridement can improve outcomes. Repeated surgical intervention and antimicrobial therapy are often needed and recovery can take a long time, with a long-term impact on quality of life. This article discusses the natural history of Fournier's gangrene, aetiology, risk factors, investigations and treatments with an algorithm to support clinical practice.

Thermal Infrared Camera Imaging to Aid Necrotizing Soft Tissue Infections of the Genitalia Management

OBJECTIVE

To determine if imaging with a thermal infrared camera might aid clinicians with diagnosis of equivocal necrotizing soft tissue infections of the genitalia (NSTIG) cases and help surgeons when determining appropriate surgical resection margins.

MATERIALS/METHODS

For twelve months at a single tertiary academic hospital, sequential patients already undergoing exploration for acute scrotum had preoperative photography with an infrared camera (FLIR C5). We compared infrared and standard preoperative photography with operative reports and postoperative photography to investigate if infrared photography corresponded with operative findings in severe scrotal infections - specifically the viability of the skin and the ultimate surgical resection margins.

RESULTS

A total of 16 patients were included. The pre-operative infrared photos directly correlated with resection margins in 13 of 16 (81%) patients. Notably, areas with a relatively lower (cooler) infrared intensity corresponded well to both visibly necrotic tissue when discrete and areas with large underlying fluid collections. Diffuse warm signal relative to surrounding skin correlated with cellulitis and viable skin.

CONCLUSIONS

In this observational study, infrared photography corresponded well with physical exam and operative findings. There may be a role for augmented temperature photography in the diagnosis and triage of scrotal infections. More research with standardized temperature gating of infrared signal and controls with normal or nonacute scrotums are needed to elucidate the clinical utility for infrared photograph.

Role of ultrasound in the treatment of pediatric infectious diseases: case series and narrative review

BACKGROUND

Infectious diseases are common in pediatric patients. In these patients, ultrasound is a useful imaging modality that involves no irradiation or sedation and can be performed repeatedly at the patient's bedside. The purpose of this review was to show pediatric cases with infectious disease that used ultrasound to decide the methods of treatment.

DATA SOURCES

Literature review was performed using Pubmed as the medical database source. No year-of-publication restriction was placed. The mesh terms used were: "ultrasound", "sonography", "infectious disease", "treatment", "antibiotics", "surgical intervention", "pediatric", "children", "deep neck abscess", "pyothorax", "empyema", "pneumonia", "urinary tract infection", "intra-abdominal abscess", "soft tissue infection", "septic arthritis", "osteomyelitis", and "surgical site infection".

RESULTS

We presented pediatric case series with infectious diseases, including deep neck abscess, pyothorax and empyema, pneumonia, urinary tract infection, intra-abdominal abscess, soft tissue infection, septic arthritis and osteomyelitis, and surgical-site infection. Ultrasound was useful for evaluating the extent and location of inflammation and abscess and for decision-making concerning surgical intervention.

CONCLUSION

Knowledge of these sonographic findings is important for sonographers during examinations and for physicians when determining the treatment plan and period of antibiotic therapy for infected lesions.

A Case of Necrotizing Fasciitis Mimicking a Burn in an Elderly Patient

Necrotizing fasciitis travels along the fascial plane and surrounding soft tissue, leading to ischemia and necrosis. Fournier's gangrene is a type of necrotizing fasciitis invading the deep and superficial planes of the perineal/genital region. It is rapidly progressive in nature and may have life-threatening consequences. Fournier's often exhibits a misleading clinical presentation and can be mistaken for other conditions, such as hematoma, phlebitis, cellulitis, or septic arthritis. Since the ramifications of delayed diagnosis can be clinically significant, recognition of potential mimics is important to prevent morbidity or mortality. We report a case of Fournier's gangrene mimicking a second-degree burn, an exceedingly rare presentation.

Utility of Diagnostic Imaging in the Early Detection and Management of the Fournier Gangrene

Fournier gangrene represents a urologic emergency. It is a rapidly progressing necrotizing fasciitis that comprises the perineal, perianal, and genital regions and has a high mortality rate. Diagnosis is usually made clinically, but radiological diagnostics, such as ultrasound (US), computed tomography (CT), or magnetic resonance imaging (MRI), can determine the extent of the disease in relation to pelvic structures. Early and accurate diagnosis precipitates the initiation of the effective treatment and, thus, affects the outcome of the therapy. The article reports an illustrative case study of a patient with Fournier gangrene, secondary to a perianal fistula and perianal abscess with a massive accumulation of fluid around the anus and testicles, requiring unilateral orchidectomy. Rapid radiological diagnosis via MRI enabled precise assessment of the degree of the disease, early surgical intervention, and a successful outcome.

Conceptos para la identificación y abordaje de la gangrena de Fournier

Introducción. La gangrena de Fournier es una fasciitis necrosante fulminante y progresiva, de origen infeccioso sinérgico polimicrobiano, que afecta las regiones perianal, perineal, genital y abdominal. Su incidencia es mayor en hombres, la edad promedio de presentación reportada está en los 54,7 ± 15,6 años, su mortalidad es del 3-67 %, aunque hay estudios que informan una mortalidad en hombres del 7,5 % y en las mujeres del 12,8 %. Métodos. Se hizo una revisión de la literatura en las bases de datos y fuentes de información PubMed, Scielo y Google Scholar, publicados entre 1950 y 2018, utilizando términos como "fournier gangrene", "fasciitis, necrotizing”, “wound infection”, "therapy"[subheading] y “GRADE approach". Se realizó una segunda revisión para artículos latinoamericanos en español hasta 2020 usando las mismas fuentes y palabras claves. Resultados. Se seleccionaron artículos que reportaron definiciones, datos históricos, actualizaciones en diagnóstico y terapéutica para hacer una revisión actualizada. Para el uso de las imágenes se solicitó consentimiento informado. Conclusión. La gangrena de Fournier continúa siendo una emergencia quirúrgica potencialmente letal. Gracias a las investigaciones realizadas se ha avanzado en su tratamiento, mejorando los resultados. Es importante analizar los factores de riesgo en cada paciente y su etiología para establecer el tratamiento más adecuado.

Magnetic Resonance Imaging of Hidradenitis Suppurativa: A Focus on the Anoperineal Location

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease involving apocrine-bearing sites. It is characterized by recurrent painful nodules and abscesses that potentially rupture, resulting in sinus tract formation, fistulas, and scarring. HS tends to be found in the intertriginous areas (i.e., the axillary, inguinal, and perianal areas of the body). HS may be uncommon for radiologists because its diagnosis is usually based on clinical assessment. However, diagnosis based solely on clinical manifestations can underestimate the severity of HS. Ultrasonography and MRI play a critical adjunct role in determining the severity and extent of the disease and greatly aid its management. Given that MRI is an effective imaging tool, its role in the analysis of severe and anogenital HS lesions merits considerable attention. Unfortunately, anoperineal HS imposes diagnostic dilemmas. It has multiple symptoms and presentations and often mimics other diseases in the intertriginous areas. Therefore, a thorough understanding of HS is essential to avoid delayed diagnoses. This review highlights the typical MRI imaging features and staging of HS, emphasizing on the anoperineal location. The review also differentiates the disease from mimics to facilitate the prompt delivery of appropriate treatment and improve patients’ quality of life.

Fournier's Gangrene: A Coexistence or Consanguinity of SGLT-2 Inhibitor Therapy

BACKGROUND

Sodium-glucose cotransporter-2 inhibitors (SGLT2 inhibitors) are a relatively new class of medications used for the management of type II diabetes mellitus targeting the kidneys. Within the last decade, several warnings have been issued regarding the development of severe genitourinary infections, including necrotizing fasciitis, or Fournier's gangrene, in those with pre-existing type II diabetes and concomitant use of this drug class.

OBJECTIVE

The purpose of this review is to highlight and discuss the factors contributing to the development of Fournier's gangrene, its pathogenesis, and a review of existing literature describing patient outcomes, treatment, and future directions regarding early detection of this complication.

METHODS

Articles and studies addressing effective treatment adherence and key factors contributing to Fournier's gangrene with SGLT2 inhibitors were identified by effective keyword searches in PubMed Central, Google Scholar, and Cochrane, as well as the references found within these articles.

RESULTS

Using the keywords provided, 55 case reports, review articles, and meta-analysis reports written within the last 20 years were utilized as the source of the data presented in this systematic review article.

Critical Point-of-care Ultrasound Diagnosis of Fournier’s Gangrene: A Case Report

Introduction

Fournier’s gangrene is a severe, necrotizing, and potentially fatal, soft tissue infection of the perineum that can be difficult to diagnose clinically. Point-of-care ultrasound (POCUS) has established a critical role in emergency medicine as a quick diagnostic tool due to its safety, accuracy, and cost effectiveness.

Case Report

We present a case in which POCUS was used to rapidly confirm diagnosis in an unstable, severely septic patient presenting to the emergency department with Fournier’s gangrene.

Conclusion

Point-of-care ultrasound can be used to make the diagnosis of Fournier’s gangrene in critical patients when other diagnostic modalities are not feasible due to a patient’s clinical state.

Associations between YKL-40 and markers of disease severity and death in patients with necrotizing soft-tissue infection

Background

Necrotizing soft-tissue infection (NSTI) is a severe and fast-progressing bacterial infection. Prognostic biomarkers may provide valuable information in treatment guidance and decision-making, but none have provided sufficient robustness to have a clinical impact. YKL-40 may reflect the ongoing pathological inflammatory processes more accurately than traditional biomarkers as it is secreted by the activated immune cells, but its prognostic yields in NSTI remains unknown. For this purpose, we investigated the association between plasma YKL-40 and 30-day mortality in patients with NSTI, and assessed its value as a marker of disease severity.

Methods

We determined plasma YKL-40 levels in patients with NSTI (n = 161) and age-sex matched controls (n = 65) upon admission and at day 1, 2 and 3.

Results

Baseline plasma YKL-40 was 1191 ng/mL in patients with NSTI compared with 40 ng/mL in controls (p < 0.001). YKL-40 was found to be significantly higher in patients with septic shock (1942 vs. 720 ng/mL, p < 0.001), and in patients receiving renal-replacement therapy (2382 vs. 1041 ng/mL, p < 0.001). YKL-40 correlated with Simplified Acute Physiology Score II (Rho 0.33, p < 0.001). Baseline YKL-40 above 1840 ng/mL was associated with increased risk of 30-day mortality in age-sex-comorbidity adjusted analysis (OR 3.77, 95% CI; 1.59–9.24, p = 0.003), but after further adjustment for Simplified Acute Physiology Score II no association was found between YKL-40 and early mortality.

Conclusion

High plasma YKL-40 to be associated with disease severity, renal-replacement therapy and risk of death in patients with NSTI. However, YKL-40 is not an independent predictor of 30-day mortality.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12879-021-06760-x.

The CT scout view: complementary value added to abdominal CT interpretation

Computed tomography (CT) scout images, also known as CT localizer radiographs, topograms, or scanograms, are an important, albeit often overlooked part of the CT examination. Scout images may contain important findings outside of the scanned field of view on CT examinations of the abdomen and pelvis, such as unsuspected lung cancer at the lung bases. Alternatively, scout images can provide complementary information to findings within the scanned field of view, such as characterization of retained surgical foreign bodies. Assessment of scout images adds value and provides a complementary "opportunistic" review for interpretation of abdominopelvic CT examinations. Scout image review is a useful modern application of conventional abdominal radiograph interpretation that can help establish a diagnosis or narrow a differential diagnosis. This review discusses the primary purpose and intent of the CT scout images, addresses standard of care and bias related to scout image review, and presents a general systematic approach to assessing scout images with multiple illustrative examples, including potential pitfalls in interpreting scout images.

Imaging spectrum of common and rare infections affecting the lower genitourinary tract

In this review, we will discuss the imaging findings of common as well as uncommon lower genitourinary tract infections. For both clinicians and radiologists, it is imperative to understand etiopathogenesis, epidemiological information, clinical presentation, imaging findings and management options of such conditions. Knowledge of salient imaging features of these infections is of utmost importance because prompt recognition enables appropriate management.

Role of color flow Doppler ultrasound in the evaluation of acute scrotal pain

Color flow Doppler ultrasound is a critical tool in the assessment of the scrotum. Ultrasound is the first-line imaging modality and can rapidly differentiate between surgical and nonsurgical conditions, allowing for appropriate and prompt patient management. We review the role of color flow Doppler in the evaluation of acute scrotal pain, highlighting some of the most commonly seen pathologies such as epididymo-orchitis and testicular torsion.

Paratesticular lesions: Aetiology and appearances on ultrasound

BACKGROUND

Ultrasound (US) is the primary modality for the investigation of scrotal pathology, including both intra- and paratesticular abnormalities.

OBJECTIVE

To describe the abnormalities of the paratesticular space.

MATERIALS/METHODS

The paratesticular space contains the epididymis, spermatic cord and the tunica vaginalis cavity and is affected by a variety of inflammatory or tumoral entities. Differential diagnosis based on US criteria is frequently problematic, as the findings are non-specific.

RESULTS

Some general rules apply: (i) unlike testicular lesions, extra-testicular entities are usually benign in the adult, (ii) the first steps to accurate diagnosis include careful localization of the lesion and assessment of its consistency (solid or cystic) and (iii) magnetic resonance imaging can be useful for further tissue characterization of lesions suspected to contain fat, but surgical biopsy will often provide the definite diagnosis. Contrast-enhanced ultrasound (CEUS) has been applied with limited experience indicating a narrow role, primarily for the differential diagnosis of echogenic cystic entities and the delineation of a necrotic abscess from a solid neoplasm.

DISCUSSION

The various abnormalities are discussed and illustrated.

CONCLUSION

This manuscript summarizes the literature on paratesticular lesions and the value of US in diagnosis.

Genitourinary Emergencies in Older Adults

Older adults are frequently seen in the emergency department for genitourinary complaints, necessitating that emergency physicians are adept at managing a myriad of genitourinary emergencies. Geriatric patients may present with acute kidney injury, hematuria, or a urinary infection and aspects of how managing these presentations differs from their younger counterparts is emphasized. Older adults may also present with acute urinary retention or urinary incontinence as a result of genitourinary pathology or other systemic etiologies. Finally, genital complaints as they pertain to older adults are briefly highlighted with emphasis on emergent management and appropriate referrals.

Fournier's gangrene as a rare complication in patient with uncontrolled type 2 diabetes treated with surgical debridement: A case report and literature review

•

Fournier’s gangrene (FG) is a rare disease which usually affects men. It is characterized by progressive necrotizing fasciitis.

•

A 66-year-old man with uncontrolled type 2 diabetes, obesity with BMI 38, chronic kidney failure and chronic heart failure, reported the onset of symptoms about 14 days before his hospitalization, without consulting any doctor due to Covid-19 pandemic.

•

The combination therapy of surgical debridement and antibiotics infusion was effective.

Introduction

Fournier’s gangrene is a potentially fatal emergency condition, supported by an infection of perineal and perianal region, characterized by necrotizing fasciitis with a rapid spread to fascial planes. FG, usually due to compromised host, may be sustained by many microbial pathogens.

Case report

A 66-year-old man, with a history of uncontrolled type 2 diabetes, obesity with BMI 38, chronic kidney failure and chronic heart failure, was admitted to the Emergency Department with a large area of necrosis involving the perineal and perianal regions.

Discussion

Fournier’s gangrene is favoured by hypertension, obesity, chronic alcoholism, renal and heart failure. Generally, Fournier’s gangrene needs other procedures in addition to wound debridement such as colostomy, cystostomy, or orchiectomy.

Conclusion

We report a case of FG found as complication in a patient with uncontrolled type 2 diabetes, treated with effective combination therapy with surgical debridement and antibiotics infusion.

Fournier Gangrene in the Emergency Department: Diagnostic Dilemmas, Treatments and Current Perspectives

Fournier gangrene (FG) is a rare and life-threatening urosurgical emergency characterized most often by a polymicrobial infection of the perineal, genital, or perianal region. FG has an increased incidence in male patients, patients with alcoholism, and patients with immunocompromise including human immunodeficiency virus (HIV) and uncontrolled diabetes. FG often begins as a simple abscess or cellulitis with progression to necrotizing soft tissue infection (NSTI). Delays in diagnosis and treatment confer high mortality. Early recognition and high clinical suspicion are important in making a timely diagnosis, as early manifestations are often subtle. The most significant modifiable risk factor associated with NSTI mortality is delay to surgical intervention. Coordination of both inpatient medical and surgical teams to implement appropriate therapy is vital to successful outcomes. The emergency medicine clinician must be vigilant for this condition and be aware of risk factors, prognostic indicators, and proper treatment protocols to recognize FG early and initiate appropriate management. The objective of this review is to provide updated and relevant information regarding recognition, diagnosis, and management of FG for the emergency medicine provider.

Scrotal emphysema with characteristics of Fournier's gangrene in a community setting

Fournier's gangrene is a life-threatening type of necrotizing fasciitis associated with a high rate of morbidity and mortality. The patient is a 29-year-old incarcerated male who presented to the ED with left-sided scrotal crepitus extending into the axilla and testicular swelling. The patient endorsed a pimple on his left scrotum accompanied with groin pain. He had a prior history of foreign body removal and self-mutilating behaviors. The patient was taken for surgical exploration out of concern due to a subcutaneous emphysema secondary to a necrotizing soft tissue infection.

Fournier gangrene: pictorial review

Fournier gangrene is an emergency condition that is associated with a high mortality rate. It is defined as a rapidly progressing infective necrotizing fasciitis of the perineal, perianal, and genital regions. Early diagnosis, broad-spectrum antibiotic coverage, and adequate surgical debridement are crucial and lead to better prognosis and patient survival. There is increasing utilization of computed tomography (CT) in the initial evaluation of Fournier gangrene. CT can confirm the diagnosis in equivocal cases, determine the source of infection, and evaluate the disease extent. In this pictorial review, we discuss the pathogenesis of Fournier gangrene and display the imaging spectrum with an emphasis on CT findings, including asymmetrical fascial thickening, soft tissue stranding, soft tissue gas, collection, and abscess formation. The infection originating from colorectal pathology, the affected anatomy, and the involvement of the abdominal wall are important predictors of mortality. The familiarity of the varied imaging appearance of Fournier gangrene is necessary to provide an accurate diagnosis, and evaluation of disease extent is crucial for optimal surgical debridement.

Incidence, comorbidity and mortality in patients with necrotising soft-tissue infections, 2005-2018: a Danish nationwide register-based cohort study

OBJECTIVE

To assess the incidence, comorbidities, treatment modalities and mortality in patients with necrotising soft-tissue infections (NSTIs) in Denmark.

DESIGN

Nationwide population-based registry study.

SETTING

Denmark.

PARTICIPANTS

Danish residents with NSTI between 1 January 2005 and 31 August 2018.

MAIN OUTCOME MEASURE

Incidence of disease per 100 000 person/year and all-cause mortality at day 90 obtained from Danish National Patient Registry and the Danish Civil Registration System.

RESULTS

1527 patients with NSTI were identified, yielding an incidence of 1.99 per 100 000 person/year. All-cause 30-day, 90-day and 1-year mortality were 19.4% (95% CI 17.4% to 21.5%), 25.2% (95% CI 23.1% to 27.5%) and 30.4% (95% CI 28.0% to 32.8%), respectively. Amputation occurred in 7% of the individuals. Diabetes was the most predominant comorbidity affecting 43% of the cohort, while 26% had no comorbidities. Higher age, female sex and increasing comorbidity index were found to be independent risk factors of mortality. Admission to high-volume hospitals was associated with improved survival (OR 0.59, 95% CI 0.45 to 0.77). Thirty-six per cent received hyperbaric oxygen therapy (HBOT) as an adjunctive therapy. No change in overall mortality was found over the studied time period.

CONCLUSION

The present study found that in Denmark, the incidence of NSTI increased; mortality rates remained high and largely unaltered. Diabetes was the most common comorbidity, while higher age, female sex and increasing comorbidity index were associated to increased mortality. Survival was improved in those admitted to hospitals with more expertise in treating NSTI. In high-volume hospital, HBOT was associated with decreased odds for mortality.

MRI of common penile pathologies and penile prostheses

MRI can delineate finer details of penile anatomy and pathology due to inherent higher soft-tissue contrast and spatial resolution. It can characterize inflammation and identify abscesses, localize penile fractures, guide surgical planning in penile fibrosis and Peyronie's disease, and depict components of the penile prosthesis and its complications. MRI is a great investigative tool for penile neoplasms, including locally infiltrative neoplasms where clinical examination is limited, and local staging is crucial for surgical planning.

Imaging of the acute scrotum: keys to a rapid diagnosis of acute scrotal disorders

Imaging of the scrotum in the setting of acute symptoms such as pain or swelling is commonly performed emergently to differentiate between patients who require immediate surgery and those that do not. Acute scrotal symptoms are generally caused by infectious, traumatic or vascular etiologies. Rapid diagnosis and initiation of treatment is vital for testicular salvage in cases of acute testicular torsion, testicular rupture, and Fournier gangrene. Epididymitis, epididymo-orchitis, torsed testicular appendage, segmental testicular infarction, scrotal hematomas, testicular neoplasms, and acute idiopathic scrotal edema can have similar clinical presentations, but these conditions do not require immediate surgery. Ultrasound is the well-established first-line imaging modality for the acute scrotum. Contrast-enhanced ultrasound and magnetic resonance imaging can be useful as problem-solving tools when ultrasound studies are inconclusive or equivocal. This review describes normal scrotal anatomy and a wide range acute scrotal disorders, with emphasis on the imaging and clinical features that can minimize the risk of misdiagnosis.

Spontaneous closure of an extensive postdebridement perineal wound in a newly diagnosed diabetic patient presenting with necrotizing fasciitis

Diabetes mellitus may present for the first time with necrotizing fasciitis. Early treatment of septic shock and immediate surgical debridement reduces mortality. A diverting loop colostomy prevents soiling of extensive postdebridement wound. Local wound care together with good glycemic and infection control leads to spontaneous wound closure.

Fournier Gangrene in Men and Women: Appearance on CT, Ultrasound, and MRI and What the Surgeon Wants to Know

Fournier gangrene (FG) is a genitourinary necrotizing fasciitis that can be lethal if not promptly diagnosed and surgically debrided. The diagnosis is often made by physical examination paired with an appropriate clinical suspicion and supporting laboratory values. Imaging, particularly computed tomography (CT), plays a role in delineating involved fascial planes for operative debridement and occasionally in diagnosing FG. Less commonly, the imaging manifestations of FG may also be seen on ultrasound, radiographs, and magnetic resonance imaging. With the ubiquitous use and availability of CT, radiologists have a growing role in recognizing FG. This can be challenging in the absence of fascial gas, but a CT scoring system for necrotizing fasciitis can be helpful in making the diagnosis. Recent series suggest that this predominantly male disease has a rising incidence in women. Women with FG are more likely to be morbidly obese and have vulvar or labial involvement compared to men. Imaging mimics include ulcerative and necrotic tumors, traumatic or iatrogenic fascial gas, and vaginitis emphysematosa. The purpose of this pictorial review is to illustrate the imaging manifestations of FG and its mimics, with emphases on necrotizing fasciitis CT scoring systems and FG in women.

Impact of radiological diagnostics in the survivor of disseminated Fournier gangrene patient with septic pulmonary embolism

A 51-year-old diabetic man diagnosed with prostatic abscess underwent its drainage twice. Following surgery he developed fever and right-sided painless visual loss due to endophthalmitis. To rule out its endogenous source CT scan was done which showed multisystem aetiology and complications. His pelvic CT and CT cystogram revealed postsurgical urethral injury along with urinary extravasation, perineal and pelvic soft tissues air densities with fat stranding ascribed to Fournier gangrene, air in distended urinary bladder due to emphysematous cystitis and right common iliac vein air containing septic thrombus. CT chest spotted bilateral multiple septic pulmonary emboli. These radiological findings were promptly handled by uro-surgical team followed by alliance with other relevant departments. With hasty surgical drainage/debridement, urological restoration of urinary obstruction, aggressive broad spectrum antibiotics, anticoagulation and radiological follow-ups the patient withstood multisystem lethal complications and come up with excellent outcome except evisceration.

Imaging Modalities in Genitourinary Emergencies

Emergency physicians rely on a multitude of different imaging modalities in the diagnosis of genitourinary emergencies. There are many considerations to be taken into account when deciding which imaging modality should be used first, as oftentimes several diagnostic tools can be used for the same pathologic condition. These factors include radiation exposure, sensitivity, specificity, age of patient, availability of resources, cost, and timeliness of completion. In this review, the strengths and weaknesses of different imaging tools in the evaluation of genitourinary emergencies are discussed.

Fournier Gangrene: A Review for Emergency Clinicians

BACKGROUND

Fournier gangrene (FG) is a rare, life-threatening infection that can result in significant morbidity and mortality, with many patients requiring emergency department (ED) management for complications and stabilization.

OBJECTIVE

This narrative review provides an evidence-based summary of the current data for the emergency medicine evaluation and management of FG.

DISCUSSION

Although originally thought to be an idiopathic process, FG has been shown to have a strong association for male patients with advanced age and comorbidities affecting microvascular circulation and immune system function, most commonly those with diabetes or alcohol use disorder. However, it can also affect patients without risk factors. The initial infectious nidus is usually located in the genitourinary tract, gastrointestinal tract, or perineum. FG is a mixed infection of aerobic and anaerobic bacterial flora. The development and progression of gangrene is often fulminant and can rapidly cause multiple organ failure and death, although patients may present subacutely with findings similar to cellulitis. Laboratory studies, as well as imaging including point-of-care ultrasound, conventional radiography, and computed tomography are important diagnostic adjuncts, though negative results cannot exclude diagnosis. Treatment includes emergent surgical debridement of all necrotic tissue, broad-spectrum antibiotics, and resuscitation with intravenous fluids and vasoactive medications.

CONCLUSIONS

FG requires a high clinical level of suspicion, combined with knowledge of anatomy, risk factors, and etiology for an accurate diagnosis. Although FG remains a clinical diagnosis, relevant laboratory and radiography investigations can serve as useful adjuncts to expedite surgical management, hemodynamic resuscitation, and antibiotic administration.

Isolated Penile Fournier's gangrene: A case report and literature review

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Penile Fournier’s gangrene is very rare clinical entity, which is also known wet gangrene of the penis.

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Penile Fournier’s gangrene is reported in only few reports in the literature.

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Fournier’s gangrene is usually managed using a multimodal approach.

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Early and aggressive surgical debridement is the standard initial treatment.

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Penile reconstruction, using scrotal flap or skin graft results in satisfactory functional and cosmetic outcomes.

Background

Fournier’s gangrene(FG) is a rare, necrotizing fasciitis of the external genitalia, perineal or perianal regions. Penile FG is a very rare clinical entity. It is reported in only a few cases in the literature.

Case description

We reported an unusual case of isolated penile FG of a 58-year-old man with uncontrolled diabetes. Our patient presented for blackish discoloration and painful swelling of the penis associated with high-grade fever. The patient was treated with immediate surgical debridement after he received broad-spectrum antibiotics. When the wound exhibited healthy bed, we used an unexpanded, meshed, split-thickness skin graft for penile reconstruction. The recovery phase was uneventful with satisfactory cosmetic results.

Discussion

FG is a rare necrotizing infection of the perineum and genital region with a high mortality rate that can reach up to 50% of cases. It is frequently due to polymicrobial infection. The diagnosis is often made clinically, although radiologic studies can be helpful to define the extent of the disease. The clinical features of FG include sudden pain and swelling in the scrotum or wound discharge. Isolated penile FG are documented in few cases where the corpora cavernosa are usually spared. Its presence are related to patients sexual habits or traumatic insult. Mainstays of treatment include rapid and aggressive surgical debridement of necrotized tissue, broad-spectrum antibiotic and early resuscitation.

Conclusion

Only a few cases of penile FG have been reported. Early debridement of all necrotic tissue is the golden rule.

Necrotizing skin and soft-tissue infections in the intensive care unit

BACKGROUND

Necrotizing skin and soft-tissue infections (NSTI) are rare but potentially life-threatening and disabling infections that often require intensive care unit admission.

OBJECTIVES

To review all aspects of care for a critically ill individual with NSTI.

SOURCES

Literature search using Medline and Cochrane library, multidisciplinary panel of experts.

CONTENT

The initial presentation of a patient with NSTI can be misleading, as features of severe systemic toxicity can obscure sometimes less impressive skin findings. The infection can spread rapidly, and delayed surgery worsens prognosis, hence there is a limited role for additional imaging in the critically ill patient. Also, the utility of clinical scores is contested. Prompt surgery with aggressive debridement of necrotic tissue is required for source control and allows for microbiological sampling. Also, prompt administration of broad-spectrum antimicrobial therapy is warranted, with the addition of clindamycin for its effect on toxin production, both in empirical therapy, and in targeted therapy for monomicrobial group A streptococcal and clostridial NSTI. The role of immunoglobulins and hyperbaric oxygen therapy remains controversial.

IMPLICATIONS

Close collaboration between intensive care, surgery, microbiology and infectious diseases, and centralization of care is fundamental in the approach to the severely ill patient with NSTI. As many aspects of management of these rare infections are supported by low-quality data only, multicentre trials are urgently needed.

Recurrent intestinal inflammation with a perianal abscess is not always Crohn's disease: a patient with a complex Meckel's diverticulum diagnosed by double-balloon endoscopy

Recurrent intestinal inflammation and refractory perianal abscesses are typical manifestations of Crohn's disease. However, these conditions are not always due to Crohn's disease. A 25-year-old male with recurrent perianal abscesses for 1 year, suspected to be due to Crohn's disease, was referred for further evaluation. Computed tomography scan showed a perianal abscess abutting the small intestine. A complicated Meckel's diverticulum was suspected based on these findings. Meckel's diverticulum scintigraphy was negative. Bidirectional double-balloon endoscopy (DBE) identified a long diverticulum in the ileum. In this long diverticulum, a tight stricture was seen 5 cm distal to the diverticular opening. A selective contrast study showed a 10 cm diverticulum distal to the stricture, with three strictures in the long diverticulum. Inflammation of the Meckel's diverticulum due to bacterial overgrowth was suspected as a cause of the refractory perianal abscesses. Laparoscopic diverticulectomy was performed, and the specimen showed a 10 cm diverticulum containing post-inflammatory changes with scar formation. The perianal abscess was confirmed to be caused by an inflamed Meckel's diverticulum. The patient has been asymptomatic for 6 years after resection. DBE before exploratory laparotomy should be considered to investigate the cause of an abscess that could be secondary to small intestinal pathology.