Hidradenitis suppurativa

Bariatric surgery reduces the incidence of hidradenitis suppurativa in individuals with obesity: results of a nationwide administrative data study in France

BACKGROUND

Hidradenitis suppurativa (HS) is a systemic inflammatory condition associated with obesity, metabolic syndrome, and environmental factors. Bariatric surgery (BS) is effective in reducing weight and resolving obesity-related medical problems.

OBJECTIVES

The aim of this case-control study is to evaluate the effects of BS on the occurrence and recurrence of HS in individuals with obesity.

SETTING

Nationwide administrative data study using the French national discharge database.

METHODS

We compared 297,776 individuals with obesity and without a history of HS who underwent BS (BS group) with 2,735,930 individuals with obesity who did not receive BS (control group) to assess the incidence of de novo HS. From the same database, we compared hospitalization rates for HS recurrence between 310 individuals with obesity and HS who had BS (HS_BS group) and 3875 individuals with obesity who did not have BS (HS_control group). Propensity score matching using the nearest-neighbor method was implemented to create comparable patient groups.

RESULTS

Individuals with obesity and without a history of HS who received BS exhibited a significantly reduced risk of developing de novo HS (RR = .736 [.639; .847]). Among patients with a history of HS, those who underwent BS had a nonsignificantly reduced risk of HS recurrence (RR = .676 [.369; 1.238]) compared with those who did not.

CONCLUSION

BS reduces the risk of developing de novo HS and seems to have a protective effect on its recurrence in individuals with obesity, although the latter effect was not statistically significant.

Financial toxicity of hidradenitis suppurativa: A single-center experience at an urban wound-care clinic

Hidradenitis suppurativa (HS), is a chronic inflammatory skin disorder that confers a substantial financial burden to patients. The aim of the current study was to assess the patient-reported financial impact of HS. Patients presenting to a wound center between 2010 and 2021 were retrospectively reviewed. Demographics, comorbidities, and disease characteristics were collected. The financial impact of HS was assessed via the Comprehensive Score for Financial Toxicity - Functional Assessment of Chronic Illness Therapy (COST-FACIT) version 2 and investigator-generated surveys. Of 199 patients contacted, 27.1% (n = 54) completed the survey. The majority were women (77.8%, n = 42) and had private health insurance (n = 30; 55.6%). Most patients (66.7%, n = 36) had Hurley stage III disease. Mean follow-up was 2.3 + 2.8 years. The overall COST score was 19.7 + 12.4, indicating grade 1 financial toxicity (FT). Grade 0 FT was reported in 31.5% (n = 17) of patients, grade 1 in 37.0% (n = 20), grade 2 in 27.8% (n = 15), and grade 3 in 3.7% (n = 2). The mean self-reported 12-month out-of-pocket cost and credit scores were $2250 + 3269.24 and 674.6 + 95.3, respectively. Patients with private insurance had lower FT compared with Medicaid and Medicare (p = 0.003). Higher out-of-pocket costs were positively correlated with FT (p = 0.042), while higher credit scores were negatively correlated (p = 0.003). Patients with HS lesions in three or more anatomic regions reported the highest FT (p = 0.031). HS is a debilitating skin disorder that affects the livelihood of patients in a multifaceted manner. These patient-reported outcomes highlight the impact that HS has on an individual's financial security, calling for further attention to this vulnerable population.

Patient Perspectives of Health System Barriers to Accessing Care for Hidradenitis Suppurativa: A Qualitative Study

Importance

Patient-perceived barriers to hidradenitis suppurativa (HS) care are poorly understood. Understanding health care barriers is a critical first step toward improving care for this population.

Objective

To characterize the health care experiences of people living with HS, including perceived barriers and facilitators to health care access, and to elucidate potential associations among these barriers and facilitators, health care access, and disease activity.

Design, Setting, and Participants

In this qualitative study, an inductive thematic analysis was conducted on 45 in-depth, 60- to 90-minute semistructured interviews of 45 people with HS from diverse sociodemographic backgrounds that took place between March and April 2020. Individuals were eligible if they could speak English, were 18 years or older, and were diagnosed with HS. A diagnosis of HS was confirmed through physician diagnosis or through self-reported, affirmative response to the validated screening question, "Do you experience boils in your armpits or groin that recur at least every six months?"

Main Outcomes and Measures

Interviews were audio recorded and transcribed verbatim. A modified grounded theory approach was used to develop the codebook, which investigators used for inductive thematic analysis.

Results

Among the 45 participants included, the median (IQR) age was 37 (16) years, 33 (73%) were female, and 22 (49%) were White. There were 6 interrelated themes associated with participant-perceived barriers to accessing HS care: (1) bidirectional associations of disease activity and employment, (2) association of employment with health care coverage, (3) association of health care coverage with costs and perceived access to care, (4) association of costs with access to patient-centered care, (5) health care professional attitudes and knowledge influence patient-centered care and perceived access to care and disease activity, and (6) health system characteristics influence patient-centered care and associated costs, perceived access to care, and disease activity.

Conclusions and Relevance

This qualitative study highlights themes that generate a conceptual model for understanding barriers that may act synergistically to limit health care access and influence disease activity. The disease activity of HS may be reduced when cycle elements are optimized. This study also highlights areas for future investigations and potential systems-level changes to improve access to patient-centered HS care.

Hidradenitis Suppurativa: The Influence of Gender, the Importance of Trigger Factors and the Implications for Patient Habits

Hidradenitis suppurativa (HS) is a debilitating, chronic, inflammatory skin disease primarily affecting apocrine gland-rich areas of the body. On the one hand, the presence of triggering factors-some identified, others only hypothesized-may initiate or perpetuate the pathogenic process of HS. In addition to cigarette smoking and diet, other trigger factors, including choice of clothing, are frequently observed in clinical practice. On the other hand, the presence of disease may influence habits of HS patients. Indeed, high incidences of sexual and sleep impairment have been reported in these patients. Consequently, alcohol and substance abuse may be a coping strategy for the emotional and psychological disease burden. Furthermore, a greater awareness of gender differences in HS may be important for dermatologists in their own clinical practice (i.e., pregnancy and breastfeeding). Consequently, in this loop interaction, comprehensive knowledge of all factors involved is crucial for the management of HS patients. Thus, the objective of this review is to (i) discuss the influence of gender on HS, (ii) summarize the most frequent triggering factors of HS and (iii) analyze the impact of HS on patient habits.

Hidradenitis Suppurativa: A Comparison of Institutional Experience and the Tracking Operations and Outcomes for Plastic Surgeons Registry

BACKGROUND

Hidradenitis suppurativa is a chronic inflammatory dermatologic condition occurring most commonly in areas with large numbers of apocrine sweat glands. Surgical excision and wound reconstruction are indicated for severe or refractory disease. This study aims to explore institutional reconstructive outcomes following hidradenitis suppurativa excision and compare these to the nationally recognized Tracking Operations and Outcomes for Plastic Surgeons (TOPS) database to determine best-practice guidelines.

METHODS

A retrospective chart review of all patients with surgically treated hidradenitis suppurativa from January of 2004 to January of 2016 was performed. Data on patient characteristics, reconstructive methods, and outcomes were collected. Outcomes for each reconstructive method were analyzed and associations between reconstruction and complications were determined. These results were compared to TOPS data.

RESULTS

A total of 382 operative sites for 101 individual patients were reviewed. Overall complication rates were 80, 68.3, and 59.6 percent for simple, intermediate, and complex closure, respectively; 68.3 percent for adjacent soft-tissue rearrangement; and 100 percent for split-thickness skin grafts and perforator flaps. Statistical significance was identified between superficial wound dehiscence and adjacent tissue rearrangement compared to intermediate and complex closure (p = 0.0132). TOPS data revealed similar wound breakdown rates for primary closure methods but much lower rates with negative-pressure wound therapy, split-thickness skin grafts, and muscle flaps.

CONCLUSIONS

Primary closure techniques for hidradenitis suppurativa wound reconstruction possess high complication rates, whereas improved outcomes are observed with negative-pressure wound therapy, split-thickness skin grafts, and muscle flaps. The correlation in outcomes between our experience and that reported in the TOPS database provides a level of validation to this national database.

New and Emerging Targeted Therapies for Hidradenitis Suppurativa

Hidradenitis suppurativa (HS) is a chronic, recurrent, inflammatory skin disease deriving from the hair follicles. The formation of inflammatory nodules, abscesses, fistulas, and sinus tracts is characterized by a large inflow of key pro-inflammatory mediators, such as IFN-γ, TNF-α, IL-1, IL-17, and IL-12/23. Adalimumab is currently the only Food and Drug Administration (FDA)- and European Medicines Agency (EMA)-approved biologic therapy for moderate to severe HS in adults and adolescents. However, the long-term effectiveness of this TNF-α inhibitor in HS patients has shown to be highly variable. This review aims to review the evidence for emerging therapies that target the main pro-inflammatory cytokines in HS pathogenesis. A review of the literature was conducted, using the PubMed and Google Scholar repositories, as well as Clinicaltrials.gov. Presently, the most promising biologics in phase III trials are anti-IL-17 antibodies, secukinumab, and bimekizumab. Furthermore, an anti-IL-1 biologic, bermekimab, is currently in phase II trials, and shows encouraging results. Overall, the clinical efficacies of all new targeted therapies published up to this point are limited. More studies need to be performed to clarify the precise molecular pathology, and assess the efficacy of biological therapies for HS.

The Role of Nutrition in Immune-Mediated, Inflammatory Skin Disease: A Narrative Review

Immune-mediated inflammatory skin diseases are characterized by a complex multifactorial etiology, in which genetic and environmental factors interact both in genesis and development of the disease. Nutrition is a complex and fascinating scenario, whose pivotal role in induction, exacerbation, or amelioration of several human diseases has already been well documented. However, owing to the complexity of immune-mediated skin disease clinical course and breadth and variability of human nutrition, their correlation still remains an open debate in literature. It is therefore important for dermatologists to be aware about the scientific basis linking nutrition to inflammatory skin diseases such as psoriasis, atopic dermatitis, hidradenitis suppurativa, bullous diseases, vitiligo, and alopecia areata, and whether changes in diet can influence the clinical course of these diseases. The purpose of this narrative review is to address the role of nutrition in immune-mediated inflammatory skin diseases, in light of the most recent and validate knowledge on this topic. Moreover, whether specific dietary modifications could provide meaningful implementation in planning a therapeutic strategy for patients is evaluated, in accordance with regenerative medicine precepts, a healing-oriented medicine that considers the whole person, including all aspects of the lifestyle.

Plastic Surgical Management of Hidradenitis Suppurativa

LEARNING OBJECTIVES

After studying this article, the participant should be able to: 1. Describe the pathogenesis of hidradenitis suppurativa. 2. Discuss perioperative multimodal therapy of hidradenitis suppurativa, including medical optimization. 3. Determine an appropriate surgical plan with excision and reconstruction based on hidradenitis suppurativa severity, size, and anatomical location.

SUMMARY

Successful treatment of hidradenitis suppurativa requires a multidisciplinary team approach and multimodal therapy.

Management of Severe Hidradenitis Suppurativa

Hidradenitis suppurativa (HS) is a devastating and disfiguring disease of the skin involving the terminal follicular epithelium within the apocrine-gland-bearing skin. We present an interesting case of a 58-year-old female who presented with a 10-year history of refractory HS of the gluteal, perineal, perianal, and groin region. She had been chronically treated with multiple antibiotics in the past with no improvement. The patient subsequently underwent surgical local excision with complex closure. Medical management alone may not be optimal, especially in refractory disease. Early and aggressive surgical intervention and interdisciplinary approach are needed for patients with chronic and advanced stage of HS.

The Hidradenitis Suppurativa Quality of Life (HiSQOL) score: development and validation of a measure for clinical trials

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic, inflammatory condition that can have a large negative impact on health-related quality of life (HRQOL). A reliable and validated measure of HS-specific HRQOL in clinical studies is needed.

OBJECTIVES

To develop and validate the Hidradenitis Suppurativa Quality Of Life (HiSQOL©) scale, for clinical trial measurement of HS-specific HRQOL.

METHODS

In stage 1, qualitative concept elicitation interviews were conducted with patients with HS in Denmark (n = 21) and the U.S.A. (n = 21). In stage 2, cognitive debriefing interviews were performed with U.S. (n = 30) and Danish patients with HS (n = 30). In stage 3 an observational study of 222 patients with HS in the U.S.A. was conducted for item reduction, measure validation and assessment of psychometric properties. In stage 4, an observational study of 215 patients with HS in Denmark was conducted to confirm the psychometric structure derived in stage 3. In both studies the Dermatology Life Quality Index, Hospital Anxiety and Depression Scale and numerical rating scale for pain were also included.

RESULTS

In concept elicitation, 99 items were generated, which were reduced to 41 after removing duplicates. In cognitive debriefing, two items were added and one item removed. A 42-item instrument was psychometrically assessed. Based on psychometric analyses and patient input, the instrument was reduced to 17 items that had strong psychometric properties in both the U.S. and Danish samples.

CONCLUSIONS

The HiSQOL is a reliable and valid instrument to measure HS-specific HRQOL in clinical trials.

Baseline patient-reported outcomes from UNITE: an observational, international, multicentre registry to evaluate hidradenitis suppurativa in clinical practice

Background

Hidradenitis suppurativa (HS) is a chronic, inflammatory, skin condition associated with many comorbidities and often has a substantial impact on patients’ lives.

Objectives

To evaluate symptom burden and health‐related quality of life (HRQoL) at baseline in patients with HS in an observational, real‐world, clinical setting using several tools including a validated HS‐specific instrument.

Methods

This study evaluated HRQoL data from the international UNITE HS disease registry. Administration of patient‐reported outcome (PRO) instruments and collection of data were executed per local regulations. All data were assessed using descriptive statistical methods.

Results

PRO data from 529 adults and 65 adolescents were evaluated. Most adults (64.5%) and adolescents (73.8%) were classified as Hurley Stage II with substantial disease burden at baseline. HS had a large effect (mean DLQI = 12.6) and moderate effect (mean CDLQI = 6.9) on the lives of adults and adolescents, respectively. Approximately 58% of adults and 41% of adolescents had anxiety scores beyond the normal range; 30% of adults and 16% of adolescents exhibited symptoms of depression. Based on HSSA and HSIA scores, approximately 30% of adults reported a substantial burden of multiple HS clinical symptoms and more than 45% reported a significant emotional impact of HS that adversely affected their intimate relationships. Only 60% of adults were employed and of those, 64% reported at least some degree of impairment while working because of HS.

Conclusions

Based on PROs collected from patients enrolled in the UNITE registry, a real‐world, clinical setting, HS has a significant negative impact on the everyday lives of patients affected by this disease.

Factors influencing the local cure rate of hidradenitis suppurativa following wide local excision

Wide local excision is the gold standard and only potential curative therapy for recalcitrant hidradenitis suppurativa. However, high recurrence rates persist even post-surgery with little known on the influencing factors for remission. We evaluated the effect of patient, disease, and operative factors on local cure rate of moderate to severe hidradenitis following wide local excision. We performed a retrospective chart review for all patients who had undergone surgical excision of hidradenitis at a university hospital from 2012 to 2018. We identified 79 patients with a total of 220 operative sites. The majority were obese (mean body mass index [BMI] 32.5), female (71%), African-American (84%), and had a mean age of 31 years. A quarter of operative sites experienced a recurrence (n = 56). Patients who achieved remission had a significantly lower number of affected regions than those who experienced a recurrence (2.3 vs 3.6, P = .0023). Additionally, recurrence rate differed significantly between body locations (P = .0440). Smoking, BMI, Hurley grade, closure method, and excision size did not influence local cure rate. Surgical excision remains a worthy management option for hidradenitis patients with three quarters achieving remission after a single operation. Number of affected regions and location of hidradenitis may play a factor in recurrence.

Prevalence and Impact of Dietary Avoidance among Individuals with Hidradenitis Suppurativa

BACKGROUND

People with hidradenitis suppurativa (HS) are interested in dietary alterations to manage the condition. However, there are few data on the prevalence of this or the impact on HS activity. The objective of this study was to investigate the prevalence and impact of dietary alterations made by people with HS.

METHODS

A cross-sectional survey was sent to people with HS through multiple sources. Participants reported food alterations in the prior 6 months. -Results: Overall, 242 complete surveys were included in this analysis; the mean age was 35.8 years, and most (87.5%) were women. The majority (75.8%, n = 182) altered at least one food from their diet. Within this group, 154 (84.6%) made changes to multiple food groups. The top 5 food groups that were altered were gluten (48.8%), dairy (44.2%), refined sugars (40.0%), tomatoes (36.7%), and alcohol (37.1%). Smoking was eliminated in 27.5% of participants. Some participants (30.9%) reported the change made the HS "much better."

CONCLUSIONS

Dietary alteration to manage HS was common among participants in this study. Some people reported improvement in HS activity, but some noted worsening. Additional research is needed to evaluate the efficacy of dietary alteration to manage HS and to better understand the underlying pathomechanisms.

Weight Loss and Dietary Interventions for Hidradenitis Suppurativa: A Systematic Review

Hidradenitis suppurativa (HS) is a common inflammatory disorder characterized by recurrent, painful, and malodorous abscesses and nodules predominantly in skin folds. HS is associated with substantial morbidity and poor quality of life. There are no curative therapies, and the only approved biologic drug has variable efficacy and requires high doses, making adjunct treatments crucial. An important risk factor for disease severity is obesity. Our primary objective was to conduct a systematic review examining weight loss and dietary interventions, in HS. Our secondary objective was to examine nutritional supplements in HS.A systematic literature search was conducted using Medline, EMBASE, and the Cochrane Database. We included all study types in adults (>18 years), with a minimum sample size of 5, examining the effects of any dietary or weight loss intervention on HS severity. Two authors screened n = 1279 articles of which 9 met inclusion criteria. All included studies were observational and all interventions were associated with various measures of decreased HS severity. Patient-controlled weight loss and bariatric surgery were associated with HS regression, though a subset of patients with significant increase in panniculi experienced exacerbations and required excision of excess skin. Diets demonstrating benefit eliminated dairy and brewer's yeast. Nutritional supplements including zinc gluconate, vitamin D, and riboflavin had a suppressive, rather than curative, effect on HS lesions in single studies. Overall, the reviewed interventions show promise as potential adjunct treatments in a HS management plan. Prospective randomized controlled trials should validate these findings.

Is There a Role for Antiandrogen Therapy for Hidradenitis Suppurativa? A Systematic Review of Published Data

BACKGROUND

Hidradenitis suppurativa/acne inversa is a disease with deep-seated chronic painful nodules, abscesses, and draining sinus tracts, which manifests on the apocrine gland-rich skin areas of the body. Observational findings demonstrate that the disease usually appears after puberty, exhibits pre-menstrual flares in women, improves in pregnancy, and worsens post-partum, which indicates a role of hormones and particularly of androgens in its pathophysiology. Because increased androgen levels in serum have not been widely reported, an end-organ androgen hypersensitivity has been postulated.

OBJECTIVE

The aim of this systematic review was to identify and present evidence for antiandrogen therapeutic options for the treatment of hidradenitis suppurativa/acne inversa.

METHODS

A literature search was conducted in different medical electronic databases using the keywords "hidradenitis", "suppurativa", "acne inversa", and "antiandrogen" on 1 December, 2018. The main therapeutic options were subsequently used as separate keywords with the disease terms in a separate search.

RESULTS

The main therapeutic options yielded were cyproterone acetate, spironolactone, finasteride, and metformin. One randomized controlled crossover trial and seven case series were identified following use of a standard extraction form for eligibility.

CONCLUSION

The existing studies do not allow a robust evidence-based recommendation for the use of antiandrogens in the treatment of hidradenitis suppurativa/acne inversa. Further randomized controlled trials are needed to define the role of hormonal treatment as an alternative or concomitant therapy together with antibiotics or biologics.

A narrative review of the definition of 'flare' in hidradenitis suppurativa

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic, inflammatory condition that can have periodic worsening or flares. Measurement of flare is important because it can inform treatment efficacy; however, it is unclear how HS flare should be defined.

OBJECTIVES

This study reviewed the literature for definitions of HS flare.

METHODS

The PubMed MEDLINE online database was searched on 10 January 2018 and the search was repeated on 8 December 2018 for new publications. Titles and abstracts were screened for inclusion. Subsequently, full articles were screened for inclusion. Papers were included if the publication was a systematic review, clinical trial, cohort study, case report or series, or cross-sectional study. Studies were excluded if they were journalistic reviews, did not discuss clinical findings of HS or did not use the words 'flare', 'exacerbation', 'relapse' or 'recurrence'.

RESULTS

Two hundred and seventy-four papers were identified and 154 fulfilled the study criteria. Of these, 27 (17.5%) included the term 'flare' and 16 (10.4%) included the term 'exacerbation'. Two of the 27 papers (7%) defined the term flare and both included patient report of changes in symptoms or signs. One of 16 papers (6%) defined exacerbation, which was taken as one new HS lesion. The terms 'recurrence' and 'relapse' were more apt to be defined: 13% (13 of 100) and 14% (six of 44), respectively.

CONCLUSIONS

The lack of a specific and measurable definition of HS flare is a barrier to assessment of this important outcome. Once a specific and measurable definition is established, validated and reliable measures of HS flare can be incorporated into future studies. What's already known about this topic? Hidradenitis suppurativa (HS) is a chronic, relapsing inflammatory skin condition. The ability to assess flares is important to people who have HS; however, it is unclear how this is defined. HS flare is one of the core outcomes in the core outcome set for HS clinical trials; however, it is unclear how this should be assessed. What does this study add? This literature review reveals the paucity of measurable definitions associated with the use of the term 'flare' in the HS literature. It also highlights the variation and lack of a validated and reliable measure of HS flare.

[Surgical treatment options for hidradenitis suppurativa/acne inversa]

Hidradenitis suppurativa/acne inversa (HS/AI) is a chronic inflammatory skin disease. Therapy consists of conservative and surgical treatment options. In Hurley stages II and III, surgical intervention is regarded as the method of choice for areas with irreversible tissue destruction. Resection techniques with different grades of invasiveness are described in the literature. Nevertheless, there is no generally accepted concept regarding resection and reconstruction techniques or specific postoperative care. Due to lack of definitions of recurrence after surgery and poor study quality, recurrence rates are difficult to determine.

Axillary Hidradenitis: Risk Factors for Recurrence after Surgical Excision in 214 Patients

Hidradenitis suppurativa (HS) is a chronic inflammatory disease of the apocrine sweat glands. Although the mainstay of surgical treatment is excision, the disease has a high tendency to recur, for reasons that are not well understood. We sought to better characterize the natural history of this disease, focusing on patients who required operative intervention. Two hundred and fourteen patients with axillary HS underwent 293 surgical procedures. We divided the cohort into two groups based on recurrence and then compared them to identify the factors most associated with recurrent axillary HS. Mean age of onset of HS was 32.1 years. The patients were overwhelmingly female (84.1%), black (93%), and obese (average body mass index = 33.4). Of them, 35.5 per cent of the patients had bilateral axillary disease and 8.4 per cent had extra-axillary disease. Of the 214 patients, 22 (10.3%) had recurrent disease. The vast majority of interventions included excision of disease (median area = 78.6 cm2). Closure versus nonclosure was not associated with a proclivity toward recurrence. The patients with HS were overwhelmingly obese and female, and many of them smoked. Surgical excision was the most common intervention and closure was used in roughly half of the patients. Recurrence after excision was not associated with extra-axillary disease and did not seem to correlate with the manner in which the wounds were managed after excision. Weight loss and smoking cessation may play a more significant role in the prevention of recurrence of HS than surgical treatment alone.

The critical role of macrophages in the pathogenesis of hidradenitis suppurativa

INTRODUCTION

Hidradenitis suppurativa (HS) is a painful chronic inflammatory disease with a prevalence between 1 and 4% of general population. The pathogenesis of HS long eluded scientists, but growing evidence suggests that it is a consequence of inflammatory dysregulation.

FINDINGS

Recent studies suggest that dysregulated immune response to skin flora and overexpression of inflammatory cytokines leads to chronic skin inflammation seen in HS. Macrophages are the most numerous inflammatory cells found in HS infiltrates and release numerous pro-inflammatory cytokines such as IL-23, and IL-1β and TNF-α, exacerbating the inflammation and contributing to the pathogenesis of HS. Furthermore, in HS, there is dysregulated function of other immune players closely associated with macrophage function including: matrix metalloproteases (MMP) 2 and 9 overexpression, toll-like receptor upregulation, impaired Notch signalling, NLRP3 inflammasome upregulation, and dysregulated keratinocyte function. Lifestyle factors including obesity and smoking also contribute to macrophage dysfunction and correlate with HS incidence.

CONCLUSIONS

The overexpression of pro-inflammatory cytokines and subsequent efficacy of anti-cytokine biologic therapies highlights the importance of managing macrophage dysfunction. Future therapies should target key molecular drivers of macrophage dysfunction such as TLR2 and NLRP3 overexpression.

Cross-sectional imaging of complicated urinary infections affecting the lower tract and male genital organs

Complicated urinary tract infections (C-UTIs) are those associated with structural or functional genitourinary abnormalities or with conditions that impair the host defence mechanisms, leading to an increased risk of acquiring infection or failing therapy. C-UTIs occur in patients with risk factors such as neurogenic dysfunction, bladder outlet obstruction, obstructive uropathy, bladder catheterisation, urologic instrumentation or indwelling stent, urinary tract post-surgical modifications, chemotherapy- or radiation-induced damage, renal impairment, diabetes and immunodeficiency.

Multidetector CT and MRI allow comprehensive investigation of C-UTIs and systemic infection from an unknown source. Based upon personal experience at a tertiary care hospital focused on the treatment of infectious illnesses, this pictorial essay reviews with examples the clinical features and cross-sectional imaging findings of C-UTIs affecting the lower urinary tract and male genital organs. The disorders presented include acute infectious cystitis, bladder mural abscesses, infections of the prostate and seminal vesicles, acute urethritis and related perineal abscesses, funiculitis, epididymo-orchitis and scrotal abscesses. Emphasis is placed on the possible differential diagnoses of lower C-UTIs.

The aim is to provide radiologists greater familiarity with these potentially severe disorders which frequently require intensive in-hospital antibiotic therapy, percutaneous drainage or surgery.

Teaching Points

• Complicated urinary tract infections occur in patients with structural or functional risk factors.

• CT and MRI comprehensively investigate complicated urinary infections and sepsis from unknown sources.

• Infections of the urinary bladder, prostate, seminal vesicles, urethra and scrotum are presented.

• Emphasis is placed on differential diagnoses of complicated lower urogenital infections.

• Unsuspected urinary infections may be detected on CT performed for other clinical reasons.

The role of negative pressure wound therapy in the management of hidradenitis suppurativa: a case report and literature review

Hidradenitis suppurativa (HS), also known as acne inversa, is a chronic, recurrent inflammatory disease affecting skin that bears apocrine glands. It is characterised by the presence of tender subcutaneous nodules that may rupture, resulting in deep dermal abscesses, fibrosis with dermal contractures and induration of the skin. The management of HS is a challenge for physicians as the pathogenesis is not clearly defined and prevents the use and development of directed therapies. Treatment options are oral agents (antibiotics, immunomodulators) and surgical excision. Historically, surgical management has been complicated by difficult closure and high recurrent rates. In the last 10 years, negative pressure wound therapy (NPWT) has proven to be a great adjunct for wound management as it provides the adequate conditions for wound healing, promotes granulation and helps to control infection. Here, we report a case of severe perineal HS treated with radical excision and NPWT as an adjunct. The patient only had a recurrence 3 years after primary treatment and was surgically treated for cosmetic reasons without any complications. Finally, we present a review of the relevant literature.

Management of hidradenitis suppurativa wounds with an internal vacuum-assisted closure device

BACKGROUND

Hidradenitis suppurativa is a chronic, debilitating disease that is difficult to treat. Once medical management fails, wide local excision offers the best chance for cure. However, the resultant wound often proves too large or contaminated for immediate closure.

METHODS

The authors performed a retrospective chart review of hidradenitis cases managed surgically between 2005 and 2010. Data collected included patient characteristics, management method, and outcomes. Approximately half of the patients received internal vacuum-assisted closure therapy using the vacuum-assisted closure system and delayed closure and half of the patients received immediate primary closure at the time of their excision. Delayed closure consisted of closing the majority of the wound in a linear fashion following internal vacuum-assisted closure while accepting healing by means of secondary intention for small wound areas.

RESULTS

Patients managed with internal vacuum-assisted closure had wounds on average four times larger in area than patients managed without internal vacuum-assisted closure. In both groups, all wounds were eventually closed primarily. Healing times averaged 2.2 months with internal vacuum-assisted closure and 2.7 months without. At an average follow-up time of 2.3 months, all patients with internal vacuum-assisted closure had no recurrence of their local disease.

CONCLUSIONS

Severe hidradenitis presents a treatment challenge, as surgical excisions are often complicated by difficult closures and unsatisfactory recurrence rates. This study demonstrates that wide local excision with reasonable outcomes can be achieved using accelerated delayed primary closure. This method uses internal vacuum-assisted closure as a bridge between excision and delayed primary closure, facilitating closure without recurrence in large, heavily contaminated wounds.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

New perspectives in the treatment of hidradenitis suppurativa: surgery and brewer's yeast-exclusion diet

BACKGROUND

Hidradenitis suppurativa (HS), or acne inversa, is a chronic inflammatory skin disease characterized by abscesses, fistulating sinus tracts, and scarring. The exact pathogenesis of this disease remains unclear. We present our experience with HS and a possible cause of the disease and offer a surgical and clinical treatment that allows for disease resolution.

METHODS

We studied 12 patients who presented with axillary and perineal fistulas and underwent surgical excision (repaired by skin grafts or healing by secondary intention) or localized treatments followed by diet modification. All patients were found to have a specific immunology IgG reaction to brewer's yeast and wheat and were put on a controlled brewer's yeast-free diet for 12 months and followed monthly.

RESULTS

The diet demonstrated immediate stabilization of their clinical symptoms, and the skin lesions regressed over the 12-month treatment period. Similarly, all the patients demonstrated an immediate recurrence of skin lesions following accidental or voluntary consumption of beer or other foods containing brewer's yeast or wheat. The patients also demonstrated a return of their quality of life and activities, including the reestablishment of sexual activity in the patients with inguinal and perigenital lesions.

CONCLUSION

The results of the investigation suggested that the patients had severe reactions to brewer's yeast. Surgery followed by the elimination of the foods containing or made with the yeast resulted in a rapid stabilization of the dermatologic manifestation and a slow, but complete, regression of the skin lesions within a year. Despite the small number of patients in our study, our study could provide the basis for extensive and multicentric studies in order to better investigate this disabling and rare disease.

Pathogenesis and pharmacotherapy of Hidradenitis suppurativa

The focus of this review is to discuss the pathogenesis and the pharmacotherapy of Hidradenitis suppurativa (HS). HS is a distressing chronic skin disorder characterized by abscesses, boils, fistulas and scarring, generally affecting the groins, anogenital area and axillae. It is a common disease with an estimated prevalence of 1%. The etiology is unknown. HS was thought to be a disease of the apocrine sweat glands, but histological findings indicate that HS is a disease arising from the hair follicles. Several pathogenic factors seem important including genetic predisposition, smoking, obesity and an aberrant immune response to commensal flora. The management of HS is tremendously challenging because effective therapies are lacking. Nevertheless, HS has been treated with topical and systemic antibiotics, retinoids and immunosuppressive drugs such as anti-TNF-α biologics with partial success. In this review we will also discuss a potential new therapy for HS with the anti-psoriases agent acitretin.

Surgical approach to extensive hidradenitis suppurativa

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic suppurative disease of skin with high recurrence.

OBJECTIVE

To determine factors affecting complications and recurrence of HS in patients who underwent surgery.

MATERIALS AND METHODS

We operated on 15 patients with HS at 36 sites between 1999 and 2009. The affected areas were classified as groin, axilla, buttocks, nuchae, perianal, and perineal. All patients were treated using wide surgical excision under general anesthesia. The methods of reconstruction varied depending on the size and location of the defect.

RESULTS

The female:male ratio of patients was 4:11. Mean age was 41.8 ± 10.6. Twenty-eight (77%) of the lesions were Stage III according to Hurley's staging system. Mean follow-up was 42 months. Radical excision was performed on all lesions; 20 were reconstructed with primary closure, nine with fasciocutaneous flaps, and five with split-thickness skin grafts. The overall complication rate was 25% (9/36) and complications occurred mostly in perineal, perianal, and buttocks sites. Two (5.5%) recurrences were seen only in buttocks site.

CONCLUSION

To prevent complication, avoid recurrence of HS, and improve patients' quality of life, early and wide surgical excision is important and effective. The recurrence and complications are mostly related to the location of the disease. The authors have indicated no significant interest with commercial supporters.

Deficiency of IL-22 contributes to a chronic inflammatory disease: pathogenetic mechanisms in acne inversa

Overexpression of the T cell cytokine IL-22 is linked to the development of some chronic diseases, but little is known about IL-22 deficiency in humans. As demonstrated in this study, acne inversa (AI; also designated as Hidradenitis suppurativa) lesions show a relative deficiency of IL-22 and IL-20, but not of IL-17A, IL-26, IFN-γ, IL-24, or IL-1β. Moreover, AI lesions had reduced expression of membranous IL-22 and IL-20 receptors and increased expression of the natural IL-22 inhibitor, IL-22 binding protein. AI is a chronic inflammatory skin disease with prevalence up to 4% of the population and in which cutaneous bacterial persistence represents an important pathogenetic factor. Accordingly, we also found a relative deficiency of antimicrobial proteins (AMPs) in AI lesions and a positive correlation between lesional IL-22 and IL-20 versus AMP levels. IL-22, like its tissue cell downstream mediator IL-20, upregulated AMPs in reconstituted human epidermis and was critical for increased AMP levels under inflammatory conditions. The relative IL-22 deficiency in AI was not linked to lesional T cell numbers or Th22/Th1/Th17 subset markers and -inducing cytokines. However, IL-10 was highly expressed in AI lesions and correlated negatively with IL-22 expression. Moreover, IL-10 inhibited IL-22 but not IL-17 production in vitro. The IL-10 overexpression, in turn, was not associated with an elevated presence of regulatory T cells but with the enhanced presence of an IL-10-inducing cytokine. We conclude that IL-22 deficiency may contribute to the pathogenesis of certain chronic disorders as postulated in this paper for AI.

Surgery for Pyodermia fistulans sinifica to circumvent heart transplantation (Case Report)

INTRODUCTION

Pyoderma fistulans sinifica (PFS) is a rare chronic cutaneous and subcutaneous infectious disease and is associated with major physical and psychological morbidity. In this article, we present the case of a young patient affected by severe PFS, who concomitantly suffered severe left-sided cardiac insufficiency and was considered for cardiac transplantation. By radical debridement and skin grafting of all areas affected by PFS, the patient's overall condition rapidly improved and was correlated with a significant and measurable improvement of cardiac function.

CASE REPORT

Plastic surgery was consulted on a 32-year-old male by the cardiac intensive care unit with a 2-year history of recurrent pyogenic skin infections of the inguinal and axillary regions. He presented with a dilated cardiomyopathy with an ejection fraction (EF) of 15%, first-degree pulmonary insufficiency and second-degree mitral insufficiency and an overlying myocarditis leading to the picture of severe cardiac insufficiency, making him eligible for heart transplantation. The intention was to eradicate the chronic infective wounds as a preparative prior to cardiac transplantation. Radical debridement of the involved areas and coverage with split-thickness skin grafts took place and led to a significant improvement of the patient's condition. Echocardiography revealed a 266.67% improvement of the EF to 40%. Cardiac transplantation became unwarranted. At 1.5 years postoperatively, the patient is free of disease and has a normal cardiac function.

DISCUSSION

PFS is characterised in its early stages by local inflammation with beginning ulceration and can be managed conservatively. In advanced stages, as illustrated in this report, PFS must be considered as the potential source of systemic inflammatory process with significant alterations in multiple-organ systems and must be treated aggressively.