Rethinking the causes of pilonidal sinus disease: a matched cohort study.

Our understanding of pilonidal sinus disease (PSD) is based on a paper published 29 years ago by Karydakis. Since then, surgeons have been taught that hair more easily penetrates wet skin, leading to the assumption that sweating promotes PSD. This postulate, however, has never been proven. Thus we used pilocarpine iontophoresis to assess sweating in the glabella sacralis. 100 patients treated for PSD and 100 controls were matched for sex, age and body mass index (BMI). Pilocarpine iontophoresis was performed for 5 min, followed by 15 min of sweat collection. PSD patients sweated less than their matched pairs (18.4 ± 1.6 µl vs. 24.2 ± 2.1 µl, p = 0.03). Men sweated more than women (22.2 ± 1.2 µl vs. 15.0 ± 1.0 µl in non-PSD patients (p < 0.0001) and 20.0 ± 1.9 µl vs. 11.9 ± 2.0 µl in PSD patients (p = 0.051)). And regular exercisers sweated more than non-exercisers (29.1 ± 2.9 µl vs. 18.5 ± 1.6 µl, p = 0.0006 for men and 20.7 ± 2.3 µl vs. 11.4 ± 1.4 µl, p = 0.0005 for women). PSD patients sweat less than matched controls. Thus sweating may have a protective effect in PSD rather than being a risk factor.

Cause of an acute abdomen never seen: Intraabdominal perforation of an umbilical pilonidal sinus abscess.

Pilonidal sinus is a well-known disease of the sacrococcygeal region, which is caused by hair shafts penetrating the epidermis. The granulomatous reaction is the characteristic of this chronic inflammatory disease. Umbilical pilonidal sinus is an acquired disease that may appear in many guises and mimic several umbilical conditions. Several risk factors for developing the disease have been described. Treatment is based on clinical experience rather than on evidence-based medicine. The umbilical pilonidal sinus, which is not treated medically or surgically, may cause regional or generalized infections. We suggest that our case which has never had symptoms before and has caused acute abdomen, will be considered in the diagnosis of acute abdomen.

Effect of platelet-rich plasma on healing in laser pilonidoplasty for pilonidal sinus disease.

The aim of this study was to evaluate the effects of application of platelet-rich plasma in addition to laser pilonidoplasty for the treatment of pilonidal sinus. Twenty-five patients who were treated by laser pilonidoplasty for pilonidal sinus (group 1) and 25 patients who were treated by platelet-rich plasma in addition to laser pilonidoplasty (group 2) at this clinic were included in the study. Patients were classified according to the Irkorucu and Adana Numune's classification and treatment concept. Duration of stay of the patients in the hospital, time to start daily activities, duration of wound healing, recurrence, and complications were evaluated. Among the 50 patients included in the study, 41 (%82) were males and 9 (%18) were females. The mean age was 25.6 ± 2.4 years and 24.8 ± 3.8 years in groups 1 and 2, respectively. The locations of the pilonidal sinus were similar in the two groups. No statistically significant differences were found in the duration of hospital stay, duration of the procedure, time to return to work, and complication rates between the two groups. Nevertheless, duration of wound healing was 6.1 ± 2.3 and 4.1 ± 0.9 weeks in groups 1 and 2, respectively, and was shorter in group 2. Duration of wound healing was statistically significantly different in the two groups. We concluded in this study that application of platelet-rich plasma in addition to laser pilonidoplasty significantly shortens the time of wound healing.

Effects of Bathing Habits on Postoperative Wound Complications Following Sacrococcygeal Pilonidal Sinus Surgery: A Retrospective Analysis of 67 Adolescent Patients.

INTRODUCTION: Sacrococcygeal pilonidal sinus disease generally affects young people and impacts their quality of life. Few published studies assessing the characteristics of the disease in the adolescent population exist. OBJECTIVE: In this paper, the authors aim to evaluate the effects of bathing habits on wound complications in adolescent patients following Karydakis flap surgery for sacrococcygeal pilonidal sinus. MATERIALS AND METHODS: The medical records of 79 adolescent patients who underwent sacrococcygeal pilonidal sinus surgery between January 2014 and December 2017 at the Surgery Clinic of Malatya State Hospital (Malatya, Turkey) were evaluated retrospectively. Following exclusion, 67 patients were evaluated for demographics, body mass index (BMI), previous abscess formation, bathing frequency, number of sinus pits, and postoperative wound infection and dehiscence. The total follow-up time for the 67 patients was 90 days. RESULTS: The BMIs of patients with previous abscess formation were significantly higher (P = .029). In the cases with abscess, the number of pilonidal sinus pits was significantly higher (P = .039) There was a statistically significant difference between postoperative complication rates according to the number of baths per week. Wound infection rates were found to be higher in patients who bathed more than twice weekly during the 28 days after surgery (P = .005). No statistical significance was observed in complication rates from days 28 to 90 after the surgery between those who bathed twice weekly and more than twice weekly (P > .05). CONCLUSIONS: Postoperative wound complications in adolescent patients treated with Karydakis flap surgery for sacrococcygeal pilonidal sinus are more frequent in those who bathe more than twice weekly during the first 28 days postoperatively.

Pilonidal disease practice points: An update.

BACKGROUND: Chronic pilonidal disease is a common debilitating condition often seen in general practice. It is a cause of considerable morbidity and social embarrassment, but recent developments in treatment options provide promising solutions to this problem.  OBJECTIVE: This article recaps pilonidal sinus development and presentation, details methods of treatment in the primary care setting and explores new specialist management options available in Australia. DISCUSSION: As a chronic condition, the devastation of recurrence with further pain, embarrassment and time off work - added to the prospect of more surgery - is still common for patients with chronic pilonidal disease. This can be avoided with correct management and timely counselling regarding surgical options available.

[Chronic pilonidal sinus disease: overview of treatment options]. / Chronische sinus pilonidalis.

Chronic pilonidal sinus disease: overview of treatment options Pilonidal sinus disease is a common disease in predominantly young men; this condition can have a significant socio-economic impact. Although excision with primary or secondary wound healing is often applied, there is no consensus on the treatment of first choice for pilonidal sinus disease. Minimally invasive techniques, such as phenolisation, laser, and endoscopic treatments are increasingly applied, since these are associated with less pain, faster wound healing and facilitating a more rapid return to work for patients. Skin advancement flap techniques, considering they cause morbidity and large wounds, should only be considered in case of recurrent pilonidal sinus disease. Laser hair removal at the natal cleft after surgical treatment appears to reduce the risk of recurrence.

Common surgical procedures in pilonidal sinus disease: A meta-analysis, merged data analysis, and comprehensive study on recurrence.

We systematically searched available databases. We reviewed 6,143 studies published from 1833 to 2017. Reports in English, French, German, Italian, and Spanish were considered, as were publications in other languages if definitive treatment and recurrence at specific follow-up times were described in an English abstract. We assessed data in the manner of a meta-analysis of RCTs; further we assessed non-RCTs in the manner of a merged data analysis. In the RCT analysis including 11,730 patients, Limberg & Dufourmentel operations were associated with low recurrence of 0.6% (95%CI 0.3-0.9%) 12 months and 1.8% (95%CI 1.1-2.4%) respectively 24 months postoperatively. Analysing 89,583 patients from RCTs and non-RCTs, the Karydakis & Bascom approaches were associated with recurrence of only 0.2% (95%CI 0.1-0.3%) 12 months and 0.6% (95%CI 0.5-0.8%) 24 months postoperatively. Primary midline closure exhibited long-term recurrence up to 67.9% (95%CI 53.3-82.4%) 240 months post-surgery. For most procedures, only a few RCTs without long term follow up data exist, but substitute data from numerous non-RCTs are available. Recurrence in PSD is highly dependent on surgical procedure and by follow-up time; both must be considered when drawing conclusions regarding the efficacy of a procedure.

Strength of Occipital Hair as an Explanation for Pilonidal Sinus Disease Caused by Intruding Hair.

BACKGROUND: Pilonidal sinus disease is thought to be caused by intrusion of hair into healthy skin; loose hair in the intergluteal fold is thought to promote disease. However, compelling evidence to support these postulates is lacking; the cause of pilonidal sinus disease remains uncertain. OBJECTIVE: To determine whether particular properties of hair are associated with susceptibility to pilonidal sinus disease, we compared physical properties of hairs of patients with pilonidal sinus disease with hairs from control subjects who were matched for sex, BMI, and age. DESIGN: This was an experimental study with establishment of a mechanical strength test for single hairs to quantify the maximum vertical force that a hair could exert, following tests of strength of occipital, lumbar, and intergluteal hair. SETTINGS: Hair from patients with pilonidal sinus disease and matched control subjects were harvested from patients of the St. Marienhospital Vechta Department of Procto-Surgery. PATIENTS: A total of 17 adult patients with pilonidal sinus disease and 217 control subjects were included. MAIN OUTCOME MEASURES: ANOVA and intraclass and interclass variations of data gained from mechanical strength tests of occipital, lumbar, and intergluteal hair were included. RESULTS: Vertical hair strength was significantly greater in patients with pilonidal sinus disease. Occipital hair exhibited 20% greater, glabella sacralis 1.1 times greater, and intergluteal hair 2 times greater strength in patients with pilonidal sinus disease than in matched control subjects (all p = 0.0001). In addition, patients with pilonidal sinus disease presented with significantly more hair at the glabella sacralis and in the intergluteal fold. LIMITATIONS: The study was limited by its relatively small number of patients from a specific cohort of European patients. CONCLUSIONS: Occipital hair exhibited considerable vertical strength. Because occipital hair exerted the greatest force and cut hair fragments were found in the pilonidal nest in large quantities, these data suggest that pilonidal sinus disease is promoted by occipital hair. See Video Abstract at http://links.lww.com/DCR/A435.

Endogenous Thymosin ß4 Expression in Sacrococcygeal Pilonidal Sinus Disease: A Retrospective, Immunohistochemical Analysis of Excisional Skin Biopsy Samples.

Thymosin beta 4 (Tß4) is a peptide that has been shown in dermal, corneal, and cardiac preclinical injury models to potentially affect tissue protection, regeneration, and repair. Sacrococcygeal pilonidal sinus disease (SPSD) is a chronic inflammatory disorder associated with a high incidence of recurrence, chronic fistulation, and a challenging postoperative surgical wound healing process. Retrospectively, an immunohistochemical analysis was conducted to evaluate endogenous Tß4 expression in excisional skin biopsies from patients with SPSD. Patient demographics (age, gender) and surgical procedure data were obtained from their electronic medical records. Two (2) samples were cut from each specimen and prepared for histopathological assessment: 1 from the inflamed sinus tracts containing hair and granulation tissue (chronic wound group) and 1 from the normal tissue at least 1 cm away from the sinus tract (control group). Tß4 expression was evaluated in the epidermal, dermal/subcutaneous collagen, and vascular structures of the samples from the sinus tract and healthy tissue. Inflamed sinus tract tissue and noninflamed normal tissue adjacent to the sinus tract were sampled from each specimen to confirm the diagnosis of SPSD and to determine distribution and intensity of Tß4 expression. Presence of cytoplasmic staining for Tß4 was considered in favor of positive Tß4 expression; intensity of Tß4 expression was scored as 0 = no staining, 1 = mild, 2 = moderate, and 3 = strong level of expression. A total of 31 excisional skin biopsy specimens were available from 31 patients with SPSD (mean age 26.0 ± 7.6 years, 25 [80.6%] men, 6 [19.4%] women) who underwent primary surgical closure. Demographic variables were analyzed using descriptive statistics. Data compliance with normal distribution was evaluated using the Kolmogorov-Smirnov and Shapiro-Wilk tests, and the Mann-Whitney U test was used for comparison of numerical data. P <.05 was considered statistically significant. Inflamed sinus tract tissue had significantly higher Tß4 expression scores than noninflamed tissue samples in the epidermis (2.4 ± 0.8 [1.0-3.0] versus 0.8 ± 0.5 [0.0-2.0], P = .000), dermal/subcutaneous collagen (2.6 ± 0.5 [2.0-3.0] versus 1.6 ± 0.5 [1.0-2.0], P = .000), and vascular structure (2.6 ± 0.5 [2.0-3.0] versus 1.1 ± 0.3 [1.0-2.0], P = .000). Study findings indicate Tß4 is endogenously expressed in normal skin tissue and is overexpressed in inflamed sinus tract tissue in patients with SPSD. Preclinical studies with a larger sample size are needed to enhance understanding of the potential role of Tß4 in the inflammatory and tissue remodeling processes of SPSD by elucidating its mechanism of action at the molecular level, physiological role, and the therapeutic potential in dermal healing.

A Retrospective Study of Pilonidal Sinus Healing by Secondary Intention Using Negative Pressure Wound Therapy Versus Alginate or Gauze Dressings.

Pilonidal sinus (PS) disease is an inflammatory skin and subcutaneous tissue condition that presents with infection, acute abscess, chronic discharging wounds, and/or pain. Surgery with open healing by secondary intention typically is used to achieve the fastest healing time with minimal recurrence rates. A retrospective analysis was conducted of data extracted from the medical records of 73 consecutive patients who had symptomatic natal cleft PS over a 10-year period to compare use of NPWT to alginate-based/gauze daily dressing (DD) changes in terms of healing time and recurrence. Variables extracted included age, gender, PS wound diameter (small <1 cm, medium 1 cm to 3 cm, large >3 cm), and time in weeks to achieving the endpoint (epithelialization). Risk factors examined that can affect healing or recurrence of previously operated PS disease included initial drainage before excision and risk factors for impaired healing (morbid obesity as determined by body mass index [BMI] ≥35, chronic infective skin conditions, and ongoing therapy with immuno-modulating drugs or chemotherapy), and loss to follow-up. Data were collected and analyzed using the chi-squared statistic, Kaplan-Meier curves, and Cox regression models. The total time of follow-up was 390 weeks for the DD group and 311 weeks for NPWT group. Patient mean age was 26.5 ± 10.7 years, most (53, 72.6%) were male, and 12 (16.4%) had comorbidities potentially affecting healing. Nine (9) were treated with primary closure and 62 patients were treated with open healing by secondary intention (2 additional patients receiving DD were excluded from the analysis because they had small sinuses that made NPWT unfeasible). Among participants, 30 (48%) received DD and 32 had NPWT. The median time to healing was 10 weeks (95% CI: 7-17) in the DD group and 8 weeks (95% CI: 7-9) in the NPWT group (not significantly different). In patients who healed, the average time to healing was 15.0 ± 18.1 and 9.8 ± 6.3 weeks in the DD and NPWT groups, respectively (not significantly different). The PS wound recurred in 5 patients - 4 (12.5%) in the DD group and 1 (3.1%) in the NPWT group (P = .355). In univariate analysis, only the presence of comorbidities was found to significantly affect time to healing (HR 95%, CI: 0.40 [0.17-0.93]; P = .033]. Prospective, randomized controlled clinical studies are warranted.

The risk of recurrence of Pilonidal disease after surgical management.

OBJECTIVES: To estimate the rate of the Pilonidal disease (PND) recurrence and to evaluate the associated predictors of the recurrence. Methods: This is a retrospective study, conducted at King Fahd Hospital of the University in Alkhobar, Kingdom of Saudi Arabia over a period of 10 years from January 2003 until December 2013.  Results: A study of 366 with PND, 19 of those were identified as secondary cases and excluded. Most involved 347 patients were Saudi (82.1%), single (87%), and men (93.1%). The mean age of the sample was 23 ± 8 years, and the mean body mass index (BMI) was 29.7 ± 6 Kg/m2. Overall recurrence rate after the surgical management was found in 25 patients (7.2%). By logistic regression to the recurrence group, young age group, prolong sitting and BMI may increase the likelihood of the disease recurrence. Conclusion: Pilonidal disease still has challenges in its management. Treatment should depend on the extent and severity of the disease. The recurrence rate in this study is approximately 7.2%. The most predominate factors associated with recurrence were prolong sitting job, young age group, and high BMI.

[Comparison of Treatments for an Infected Pilonidal Sinus: Differences in Scar Quality and Outcome Between Secondary Wound Healing and Limberg Flap in a Prospective Study]. / Therapievergleich bei infiziertem Sinus pilonidalis - Unterschiede von Narbenqualität und Outcome nach Sekundärheilung oder Limberglappenplastik im Rahmen einer prospektiven Studie.

OBJECTIVE: There are various options for wound treatment after the excision of a pilonidal sinus. The aim of our study was to compare secondary healing to Limberg flap wound closure, with a focus on scar quality and patient complaints, rate of recurrence, period of absence from work as well as functional and aesthetic results one year after surgery. METHOD: 33 out of 55 patients who underwent pilonidal sinus excision in our department (KlinikumStadtSoest, Soest, Germany) between 2011 and 2012 were enrolled in the study. 16 of these 33 patients had chosen secondary wound healing and 17 were treated with a Limberg flap for defect coverage. First and foremost, we aimed to objectify scar quality and elasticity by measuring the parameters of skin distensibility and mobility. To this end, we used a self-developed method to ascertain the sacral lumbar skin distension quotient (SL quotient) as well as sacral skin mobility. 100 healthy volunteers served as a control group. Also we collected information about pain, time of absence from work and frequency of recurrence and asked patients about their satisfaction with the functional and aesthetic results. RESULTS: The results for the sacral lumbar skin distension quotient were significantly better after Limberg flap wound closure compared with secondary wound healing. As regards distensibility, there was a marked trend to more favourable values in the Limberg group. No differences in distensibility and mobility were observed between the Limberg group and the control group, whereas skin distensibility was significantly reduced (p=0.001) in secondary healing compared with the control group. Time off work was significantly longer in secondary healing (mean 63 days) than after Limberg flap (mean 29 days). No differences were identified regarding patient satisfaction, pain scores and frequency of recurrence. CONCLUSION: Wound closure via Limberg flap after the excision of an infected pilonidal sinus not only helps to reduce absence from work, but also produces a scar which is more distensible and movable compared with secondary healing. Patient satisfaction and pain scores were very good in both groups, with no differences observed by us. We are planning to collect more data with a bigger sample of patients and a longer follow-up period in future studies. For the time being, we will continue to provide both treatment methods to our patients.

[Modified Limberg plasty in treatment of epithelial coccygeal passage].

UNLABELLED: The aim was analysis of results of Limberg skin-plastic closure of wound defect after excision of extensive fistulous forms of coccygeal passage with some modifications. MATERIALS AND METHODS: 41 patients with fistulous form of epithelial coccygeal passage degree III were enrolled into investigation. Mean age was 35.6±6.4 years. The modification consisted of asymmetric displacement of the lowermost part of excised diamond-shaped defect laterally from the median line and fixation of flap to inter-gluteal fold bottom especially its caudal part. RESULTS: Noncomplicated course of early postoperative period with wound healing by first intention was observed in 38 (92.7%) patients. Recurrent coccygeal passage developed in 1 (2.4%) patient and it was limited (fistulous passage in one of the wound edges).

The use of negative-pressure wound therapy in pilonidal sinus disease: a randomized controlled trial comparing negative-pressure wound therapy versus standard open wound care after surgical excision.

BACKGROUND: Pilonidal sinus disease is associated with significant morbidity after surgical treatment with regard to wound healing. Recent case studies suggested that negative-pressure wound therapy as primary treatment following surgical excision may shorten the duration of wound healing. OBJECTIVE: The purpose of this randomized controlled trial was to evaluate the role of vacuum therapy in pilonidal sinus disease: negative-pressure wound therapy versus standard open wound care after surgical excision. METHODS: Patients were randomly assigned to either negative-pressure wound therapy for 2 weeks or standard open wound healing. The primary end point of the study was the time to complete wound healing. Secondary end points were visual analog scale score, wound size ratio at day 14 (ie, wound healing rate), time to resume daily activities, and recurrence within 6 months after wound closure. RESULTS: Forty-nine patients were included in the study: 24 patients were treated with vacuum therapy, and 25 patients underwent standard open wound care. Complete wound healing was achieved at a median of 84 days in the vacuum therapy group versus 93 days in control patients (p = 0.44). The wound size ratio was significantly lower in the vacuum therapy group (0.30 versus 0.57, p = 0.02), ie, higher wound healing rate in the first 2 weeks. There was no difference in visual analog scale scores and disease recurrence between both groups. The time to resume full daily activities after surgery was 27 days in the patients undergoing vacuum therapy and 29 days in the control patients (p = 0.92). LIMITATIONS: This study is limited by the small number of patients, the lack of blinding to patients and doctors, and the absence of patient quality-of-life evaluation. CONCLUSION: It is feasible to apply vacuum therapy in the treatment of pilonidal sinus disease, and it has a positive effect on wound size reduction in the first 2 weeks. However, there is no difference in time to complete wound healing and time to resume daily life activities.

Twelve common mistakes in pilonidal sinus care.

Healing of pilonidal sinus wounds (PSWs) by secondary intention requires an average of 2 to 6 months, but delayed healing may require 1 to 2 years or even longer. Characteristically, these midline wounds are in the natal cleft of the buttocks or sacrococcygeal area of the back. These PSWs have costly financial consequences to the healthcare system and negatively affect the quality of life of the individual with the wound. This article contains an evidence-based literature review supplemented by the clinical expert opinion of the authors. Twelve leading mistakes in assessment and treatment have been identified with appropriate solutions to optimize patient outcomes. A case study is included to illustrate the common clinical challenges with strategies to optimize healing.

Development of an evidence-based protocol for care of pilonidal sinus wounds healing by secondary intent using a modified Reactive Delphi procedure. Part 2: methodology, analysis and results.

This is the second part of the article based on the thesis work for a Masters of Science in Wound Healing and Tissue Repair, Cardiff University, to develop an evidence-based protocol for the care of pilonidal sinus wounds (PSWs) healing by secondary intent, using a modified Reactive Delphi process. The sample included surgeons, clinic physicians, nurses and enterostomal therapy nurses experienced in the care of these wounds. Item generation involved an extensive review of the literature to identify key aspects of evidence-based wound care essential to wound healing, infected wounds and pilonidal wounds healing by secondary intent and drawing on clinical experience. The participants responded via an electronic Delphi website, using a 4-point Likert rating scale and a ranking system. Comments were invited. Feedback was provided to the participants at the end of each round, that included comments, consensus scores, content validity index and additional information that provided rationale and references, or minor revision if requested. This project successfully achieved the objectives, which were to identify the areas of care that negatively or positively influences healing of postoperative PSWs and to inform, educate and broaden the considerations regarding these factors for health care professionals.

Pilonidal sinus disease and tuberculosis.

Pilonidal disease is a disease of young people, usually men, which can result in an abscess, draining sinus tracts, and moderate debility for some. It probably results from hair penetration beneath the skin, for reasons that are not totally clear. A pilonidal sinus in the sacrococcygeal region is associated with recurrent infection, abscess formation, cellulitis, and fistulae. The infection is usually chronic and non-specific. However, few reports of granulomatous infection like tuberculosis and actinomycosis in pilonidal sinus have been observed. The presentation of tuberculosis in these sinuses may have wide forms, with atypical and uncharacteristic clinical picture, making it difficult to make a diagnosis preoperatively. This paper discusses about pilonidal sinus disease and tubercular infiltration in these sinuses. The diagnosis of tuberculosis in pilonidal sinus disease is elusive, necessitating a high index of suspicion. The literature on the tubercular affliction of pilonidal sinus is scant. Novel diagnostic modalities such as adenosine deaminase levels and polymerase chain reaction (PCR) can be useful in doubtful situations. Physicians should obtain a thorough history focusing on risk behaviors for human immunodeficiency virus infection (HIV) and tuberculosis. Treatment comprises of standard regimen of antitubercular medication and a modest surgical approach towards the sinuses.

Development of an evidence-based protocol for care of pilonidal sinus wounds healing by secondary intent using a modified reactive Delphi procedure. Part one: the literature review*.

This article is in two parts. The overall aim of this section was to review the literature in relation to pilonidal sinus wounds (PSW) healing by secondary intent for a Master's of Science in Wound Healing and Tissue Repair thesis. The purpose of the literature review was to determine if an evidence-based guideline or consensus document existed for the care of these wounds, and if not, to determine the topics from which to develop items for the first round of a modified reactive Delphi questionnaire. Part two will describe the iterative process, the analysis and the results. The review found no best practice guidelines concerning PSW, and only one clinical pathway. Seventeen areas of interest were identified that may contribute to optimal healing conditions or to delayed healing. These included microbiology of infected PSW, signs and symptoms of localised or deeper (spreading) chronic wound infection, swab for c&s, role of topical antiseptics or antimicrobials, systemic antibiotics, local wound interventions, optimal positioning, wound cleansing, principles of moist wound healing/dressing selection, topical negative pressure (TNP) therapy, peri-wound skin decontamination and depilation, pain control, physical activities, optimal nutrition and patient education.