En-bloc excision of sacral squamous cell carcinoma with immediate reconstruction.

Sacral squamous cell carcinoma is an uncommon condition that may arise in scars following burns or in chronic wounds, such as an untreated pilonidal cyst. The aim of the present technical note is to describe a surgical technique aimed at minimizing local recurrence rates by en-bloc resection as well as providing immediate plastic reconstruction: 1. right-sided extended vertical rectus abdominis myo-cutaneous (VRAM) flap; 2. abdomino-perineal excision of the rectum with end colostomy; 3. en-bloc excision of the mass inclusive of gluteus maximus muscles and distal sacrectomy; 4. sacrectomy defect covered with VRAM flap; 5. bilateral gluteal defects covered with single-layer dermal substitute of bovine collagen and elastin hydrolysate followed by immediate split-thickness skin grafting from bilateral thigh donor sites, and negative pressure wound therapy dressings. This approach resulted in a favorable outcome at 2-year follow-up in a male patient presenting with a large locally advanced sacral squamous cell carcinoma involving the external anal sphincter muscle.

A rare presentation of Rosai-Dorfman-Destombes disease with central nervous system involvement and cutaneous wounds.

OBJECTIVE: The aim of this case report is to investigate an uncommon presentation of Rosai-Dorfman-Destombes (RDD) disease, and discuss possible differential diagnoses and treatment options for this pathology. RDD is a rare disorder of histiocytes that typically presents in patients as painless cervical lymphadenopathy. However, this case involves a patient with the central nervous system (CNS) type of RDD who later developed cutaneous lesions. METHOD: Several differential diagnoses were examined, including hidradenitis suppurativa, pilonidal cyst and pressure ulcers. It is important to be able to exclude these diagnoses based on the presentation, patient demographic and wound location. RESULTS: Biopsies verified the presence of RDD in the patient's suprasellar hypothalamic mass and skin lesions, confirming the patient had both CNS-RDD and cutaneous-RDD in the absence of lymphadenopathy. CONCLUSION: Recognising the unique manifestations of rare diseases such as RDD prevents delay of proper intervention and treatment.

The Data Mounts: 261 Cleft Lifts for Complex Pilonidal Disease and Excisional Failures.

INTRODUCTION:  The Bascom cleft-lift procedure is a superior approach for treating pilonidal disease. The purpose of this study was to establish healing time after cleft-lift, operative success, and any associated clinical or operative variables. METHODS: The study group comprises all patients who underwent cleft-lift procedures at our center between December 2021 and February 2023. Many clinical and operative variables were collected before surgery. Postoperatively, patients were examined every two weeks until full epithelialization was achieved; thereafter, they were seen at 6, 16, and 30 months and as needed for recurrence surveillance. A successful cleft-lift was defined as one that fully healed by 120 days and showed no recurrence within 18 months of follow-up. Patients with failed cleft lifts were offered revision. RESULTS: In total, 261 cleft -lifts were performed in 258 patients. Of these patients, 40.3% had at least one previous excisional surgery and 19.4% had a chronically open surgical wound. The median follow-up time was 19.8 (6.5 to 25.5) months. There were a total of 12 failed cleft-lifts, yielding an operative success rate of 95.4%. Recurrence was detected in two (0.08%) cases. The median healing time was 43 (15-387) days and did not differ by any covariate. Previous Limberg flap surgery and a shorter distance from the inferior extent of the wound/disease to the anal mucosa were associated with decreased operative success. CONCLUSION:  Our data reinforce that the cleft-lift procedure is a highly successful cure for this disease and its surgical failures. Notably, the operation was a successful cure for many patients with extensive disease and previously failed excisional surgeries, including flap reconstructions.

Chordoma arising from the coccygeal disc and mimicking a pilonidal cyst.

Chordomas are rare, low-grade malignant tumors often found in the sacrococcygeal region and prone to local recurrence. We report an atypical presentation of a 40-year-old patient with a symptomatic midline retrococcygeal lesion that was presumptively treated as a pilonidal cyst due to its clinical and imaging features. After surgical pathology rendered the diagnosis of chordoma, the patient required salvage surgery in the form of partial sacrectomy with soft tissue flap coverage. In addition to the unusually predominant retrococcygeal location, surgical pathology identified an intervertebral disc origin rather than the typical osseous origin. To our knowledge, this presentation of chordoma with coccygeal intervertebral origin and a large subcutaneous mass at imaging has rarely been reported in the literature. We describe this case to raise awareness of atypical presentations of sacrococcygeal chordoma that may lead to erroneous presumptive diagnosis and treatment.

Valoración de la cicatriz postquirúrgica de pacientes operados por quiste pilonidal según técnicas abiertas versus cerradas

Introducción: El quiste pilonidal puede ser abordado según técnicas quirúrgicas abiertas y cerradas, con distintos resultados estéticos. La cicatriz es un factor importante y representa un indicador de satisfacción. Una herramienta para valorar cicatrices es el cuestionario POSAS 2.0, adaptado transculturalmente para Chile. Objetivo: Conocer la valoración subjetiva de los pacientes operados de quiste pilonidal respecto a su cicatriz, según la técnica quirúrgica. Material y Método: Estudio es de carácter retrospectivo, observacional, transversal, analítico y de cohorte. Se aplica la escala de evaluación por el paciente del cuestionario POSAS 2.0, con una calificación desde 1 a 10, con puntaje total entre 7 y 70. Se recolectaron variables clínico-demográficas. Se aplicó estadística analítica, se compararon los resultados obtenidos entre técnicas abiertas y cerradas. Resultados. Se encuestaron 101 pacientes operados de quiste pilonidal entre 2013 y 2019, de los cuales 59 (59,4%) fueron de sexo masculino. La edad promedio fue de 23 años (DS 7,2). Del total, 22 (21,8%) de los pacientes fueron manejados con técnicas cerradas y 79 con técnicas abiertas (78,2%). El promedio del puntaje total de la escala fue 20 (DS 11,4), 22 en técnicas cerradas y 19,6 en técnicas abiertas. No se encontraron diferencias estadísticamente significativas. Conclusión: La cicatriz postoperatoria es valorada positivamente, con un puntaje que denota características similares a la piel normal. No existen diferencias significativas de la percepción de los pacientes respecto a su cicatriz. Esta es la primera comunicación chilena que evalúa la valoración subjetiva de pacientes sobre la cicatriz postoperatoria de quiste pilonidal.

Introduction: The pilonidal cyst can be approached according to open and closed surgical techniques, with different aesthetic results. The scar is an important factor and represents an indicator of satisfaction. A tool to assess scars is the POSAS 2.0 questionnaire, adapted cross-culturally for Chile. Objective: To know the subjective assessment of patients operated on for pilonidal cyst with respect to their scar, according to the surgical technique. Material and Method: This is a retrospective, observational, cross-sectional, analytical, and cohort study. The patient evaluation scale of the POSAS 2.0 questionnaire is applied, with a score from 1 to 10, with a total score between 7 and 70. Clinical-demographic variables were collected. Analytical statistics were applied, the results obtained between open and closed techniques were compared. Results: We surveyed 101 patients operated on for pilonidal cyst between 2013 and 2019, of which 59 (59.4%) were male. The mean age was 23 years (SD 7.2). Of the total, 22 (21.8%) of the patients were managed with closed techniques and 79 with open techniques (78.2%). The mean total score of the scale was 20 (SD 11.4), 22 in closed techniques and 19.6 in open techniques. No statistically significant differences were found. Conclusion: The postoperative scar is positively valued, with a score that denotes similar characteristics to the normal skin. There are no significant differences in patient's perception of their scar. This is the first chilean communication that evaluates the subjective assessment of patients on the postoperative scar of pilonidal cyst.

Pilonidal cyst of the scalp.

A 19-year-old male patient presented with a slow-growing mass on his scalp over a 10-year history. After resecting the mass, he was diagnosed with pilonidal cyst based on the clinical and histological findings. An unusual pilonidal disease is observed on the scalp in this report.

Endoscopic Pilonidal Sinus Treatment: Preliminary Results, Learning Curve and Comparison with Standard Open Approach.

Background: Pilonidal sinus (PNS) is a common disease which can lead to complications including infection and abscess formation. Different surgical approaches have been suggested, based on primary or secondary wound closure intention healing or endoscopic treatment (EPSiT). The aim of this study is to verify the superior outcomes of EPSiT, especially in comparison with the traditional open approach, and discuss the operators' learning curve. Methods: A retrospective study was conducted identifying all the patients who underwent surgical treatment for PNS with EPSiT technique between 2019 and 2022 and with open technique between 2002 and 2022. We divided patients in two groups: open procedure (group 1) and EPSiT (group 2). We considered a p value < 0.05 as statistically significant. Results: The mean operative time was 58.6 ± 23.7 min for group 1 and 42.8 ± 17.4 min for group 2 (p < 0.01). The mean hospital stay was 2.6 ± 1.7 days for group 1 patients and of 0.8 ± 0.4 days for group 2 (p < 0.01). Complete healing was obtained in 18.7 ± 5.6 days for group 1 and 38.3 ± 23.5 days for group 2 (p < 0.01). Recurrences were of 23.4% for group 1 and 5.4% for group 2 (p = 0.03). Conclusions: EPSiT is a minimally invasive and effective approach for the treatment of pilonidal cyst that can be safely performed in pediatric patients with promising results concerning aesthetic outcome and pain control, and with a rapid and less complicated recovery compared to traditional open procedures.

Deeper Seated Than Skin Deep: Report of a Rare Case of Follicular Occlusion Tetrad and a Literature Review.

Follicular occlusion tetrad (FOT) is a clinical syndrome consisting of hidradenitis suppurativa (HS), acne conglobata (AC), dissecting cellulitis of the scalp (DCS), and pilonidal cyst (PC). These entities typically occur independently, but occasionally present simultaneously comprising FOT. The four components share similar pathophysiology affecting the apocrine glands, follicular hyperkeratinization being the hallmark of each entity. Understanding shared similarities of each disease is paramount for the treatment approach as the relapsing and chronic nature of this syndrome can be burdening to patients. We present the case of a 22-year-old obese Hispanic man with a history of tobacco use who presented with worsening skin lesions. The patient developed extensive facial cystic acne 5 years before presentation, followed by left axillary hidradenitis suppurativa lesions two years before the presentation and right axillary involvement one year after. Skin manifestations then expanded to include the lower back, gluteal and perineal areas. The patient was diagnosed with FOT and despite conservative medical management, his lesions failed to improve. He ultimately underwent multiple staged excisional debridement surgeries and skin grafts. Our case underlines the presence of a syndromic association of cutaneous lesions that share a common pathogenesis and emphasizes that this entity requires a multidisciplinary approach. New biologic therapies continue to emerge and may potentially prevent the need for surgical intervention and the burden associated with it.

Revision of the Failed Cleft Lift for Pilonidal Disease.

The cleft lift has been demonstrated to be one of the most successful operations for the treatment of pilonidal disease, however, there are times this procedure fails and further surgery is necessary. This article describes a reproducible and successful technique for the revision of a failed cleft lift. This procedure was performed on 76 consecutive patients who had previous cleft lift procedures. Failures were manifested by either a wound, sinus, abscess, dehiscence or fragile scar. The revision flattened the lower gluteal cleft with a rotation and advancement flap that placed the skin incision off-midline. Follow-up over the 10 years of this series was between six and 124 months with an average of 36 months. The revision was initially successful in 96.1% of patients; if the procedure was unsuccessful a repeat revision was subsequently curative. This procedure is proposed as an essential part of the treatment algorithm for patients with recurrent pilonidal disease after a cleft lift operation.

Tratamiento quirúrgico de la enfermedad pilonidal sacrocoxígea. Experiencia de un centro en los últimos 4 años

Objetivo: Evaluar los resultados a largo plazo en el tratamiento quirúrgico de la enfermedad pilonidal sacrocoxígea (EPS), comparando las diferentes técnicas quirúrgicas utilizadas, complicaciones, tiempo de cicatrización y recidiva. Material y Método: Estudio trasversal retrospectivo. Se revisaron las fichas de los pacientes intervenidos por EPS entre enero 2017 hasta agosto 2021. Para el seguimiento se obtuvo la información desde los registros de los controles periódicos en nuestro centro y aquellos que no continuaron con estos controles se contactaron telefónicamente. Resultados: Se recopilaron 309 casos, con una media de seguimiento de 15,6 meses. Las técnicas más utilizadas para la fase crónica de EPS fueron marsupialización y Karydakis, con tiempo de cicatrización completa de 54,5 y 18,2 días, respectivamente. La presencia de complicaciones prolongó el tiempo de cicatrización en 46,5 días en Karydakis, con mínimo impacto en marsupialización. La tasa de recidiva fue menor en Karydakis y en etapa aguda cuando se realiza destechamiento y legrado. La profilaxis antibiótica no afectó el riesgo de complicaciones postoperatorias. Discusión: El desarrollo de complicaciones postoperatorias tiene mayor impacto en la cicatrización de la técnica cerrada que en la abierta, siendo esta última más tolerante en cuanto a la cicatrización frente a complicaciones. Conclusión: La intervención con técnica de Karydakis logra la cicatrización de la herida operatorio en menor tiempo que la marsupialización, sin embargo, al desarrollar complicaciones, este tiempo aumenta 3,5 veces más. La recurrencia fue menor en Karydakis. En absceso se recomienda el desteche y legrado por sobre el drenaje exclusivo

Aim: To evaluate long-term results in the surgical treatment of sacrococcygeal pilonidal disease (SPD) comparing the different surgical techniques used, complications, healing time and recurrence. Material and Method: Retrospective cross-sectional study. The files of the patients operated on for EPS between January 2017 and August 2021 were reviewed. For follow-up, information was obtained from the records of the periodic controls in our center; those who did not continue with these controls were contacted by telephone. Results: 309 cases were collected, with a mean follow-up of 15.6 months. The most used techniques for the chronic phase of EPS were marsupialization and Karydakis, achieving complete wound healing in 54.5 and 18.2 days, respectively. The presence of complications prolonged the healing time by 46.5 days in Karydakis, with minimal impact on marsupialization. The recurrence rate was lower in Karydakis and in the acute stage when unroofing and curettage were performed. Antibiotic prophylaxis did not increase the risk of postoperative complications. Discussion: The development of postoperative complications has a greater impact on the healing of the closed technique than in the open technique, the last one seems to be more tolerant in terms of healing in the presence of complications. Conclusion: The intervention with the Karydakis technique achieves healing of the surgical wound in less time than marsupialization, however, when complications develop, this time increases 3.5 times more. Recurrence was lower in Karydakis. In abscess weaning and curettage is recommended over the exclusive drainage.

Ultrasonographic Spectrum of Cutaneous Cysts With Stratified Squamous Epithelium in Pediatric Dermatology: Pictorial Essay.

High-resolution ultrasound (HRUS) is an important diagnostic method in dermatology, especially in pediatric population. The most common type of cutaneous cysts in children corresponds to cysts with stratified squamous epithelium (CSSE). The objective is to present the different ultrasonographic appearance of histologically proven CSSE in a retrospective review. Epidermoid, milium, trichilemmal, dermoid, and pilonidal cyst and steatocystomas are included. Utility of HRUS in diagnosis of cutaneous lesions is well established. It is important to know-and stay updated-about the wide spectrum of ultrasonographic appearance of CSSE in order to avoid misleading diagnoses.

Sequential, ultrasound-guided, minimally invasive pit-picking procedure with Nd:YAG laser epilation treatment for pilonidal disease.

<b><br>Aim:</b> The aim of this retrospective study was to evaluate our treatment for pilonidal disease in adolescent patients, which uses ultrasonography, minimally invasive pit-picking, and Nd:YAG laser therapy.</br> <b><br>Material and methods:</b> We included 52 of 147 patients treated between June 2017 and December 2020. The patients underwent pit-picking procedures and 6-10 Nd:YAG treatments. The remnants of the cysts were removed by laser therapy, which provided easy epilation. Each patient underwent multiple ultrasound examinations during the therapy to uncover any potential newly formed asymptomatic sinuses. When such issues were identified, the pit-picking procedure was repeated on those sinuses.</br> <b><br>Results:</b> A total of 52 patients were included in this study with a 1-year follow-up following the procedure. There were 49 symptom-free patients (96%). One patient underwent surgery in another hospital because of a recurrence and 1 had a pilonidal disease relapse (4%). In the follow-up period, asymptomatic cysts were found in 2 other patients by ultrasound examination. They were all treated with a pit-picking procedure in the outpatient department with good results.</br> <b><br>Conclusions:</b> Combining sequentially repeated pit-picking procedures and Nd:YAG laser therapy is an effective treatment method for adolescent pilonidal disease. Simultaneous Nd:YAG laser therapy enables efficacious epilation of the intergluteal cleft. Repeatable ultrasonography examinations allow for early diagnosis of possible pilonidal sinus relapse.</br>.

Use of the laser in the pilonidal sinus alone or in combination with phenol

SUMMARY OBJECTIVE: We investigated the effectiveness of combining laser treatment with phenol in the management of pilonidal sinus. METHODS: We present here a retrospective analysis of patients with pilonidal sinus disease who were treated in the general surgery clinic of the Balikesir University Hospital between October 2019 and February 2022. RESULTS: Recurrence was observed in three patients (13.6%) in the laser treatment group and one patient (4.8%) in the laser-phenol treatment group after the fourth month. Notably, 22 (91.7%) patients in the laser treatment group and 21 (95.5%) patients in the laser-phenol treatment group had complete healing. CONCLUSION: Although not statistically significant, the laser-phenol treatment group exhibited a lower recurrence rate and a higher complete healing rate.

Quiste pilonidal. Preferencias en su manejo de los cirujanos/as colorrectales de Latinoamérica

Objetivo: Caracterizar las preferencias y frecuencia de las técnicas quirúrgicas para la resolución de la enfermedad pilonidal (EPS) en los cirujanos/as colorrectales de Latinoamérica. Material y Método: Estudio transversal descriptivo analítico mediante encuesta electrónica validada por pares expertos. Distribuida entre los cirujanos/as colorrectales de Latinoamérica. Fueron excluidos los cirujanos/as no subespecialistas en cirugía colorrectal. Resultados: Se obtuvieron 372 respuestas de 15 países latinoamericanos, con media de 18,9 ± 12,5 años como subespecialistas. El 66,7% utiliza técnicas abiertas para EPS crónica, las técnicas más usadas son marsupialización (31,5%), destechamiento (27,7%) y resección con técnica de Karydakis (17,7%), colgajo de Limberg (6,1%), Bascom (5,4%), plastias en Z o V-Y (4%), McFee (3,8%) y Epsit (3,8%). La intervención más utilizada para la resolución de la EPS aguda es el drenaje bajo anestesia formal con curetaje y/o marsupialización (51,1%). El 45,3% de los cirujanos/as cambia de técnica durante su carrera. Discusión: Gracias a la amplia distribución y representatividad de los encuestados se logró plasmar la preferencia de manera realista acerca de las inclinaciones en el manejo de la EPS por parte de los subespecialistas del continente, aportando información de la que no se tiene precedente. Conclusión: Las técnicas abiertas son las preferidas para la resolución de la EPS crónica, las técnicas más utilizadas son marsupialización, destechamiento y Karydakis. Es frecuente el cambio de técnica quirúrgica preferente dentro de los subespecialistas, existiendo una relación entre escoger técnicas abiertas en la medida que los cirujanos/as tienen más años de experiencia.

Aim: To characterize the preferences and frequency of surgical techniques for the resolution of pilonidal disease (PSD) in colorectal surgeons of Latin America. Materials and Method: Cross-sectional descriptive and analytical study using an electronic survey validated by expert peers. Distributed among colorectal surgeons in Latin America. Surgeons who were not subspecialists in colorectal surgery were excluded. Results: 372 responses were obtained from subspecialist surgeons in colorectal surgery from 15 Latin American countries, with a mean of 18.9 ± 12.5 years as subspecialists. 66.7% use open techniques for chronic PSD, the most used techniques: marsupialization (31.5%), unroofing (27.7%) and resection with the Karydakis technique (17.7%), Limberg flap (6, 1%), Bascom (5.4%), Z or VY plasties (4%), McFee (3.8%) and Epsit (3.8%). The most used intervention for the resolution of acute PSD is drainage under formal anesthesia with curettage and/or marsupialization (51.1%). 45.3% of surgeons change techniques during their career. Discussion: Due to the wide distribution and representativeness of the respondents, it was possible to capture the preference in a realistic way about the management of the PSD by the subspecialists of the continent, contributing with information with which there is no precedent. Conclusion: Open techniques are preferred for the resolution of chronic PSD, marsupialization, unroofing and Karydakis were used the most. The change of surgical technique within subspecialists is frequent, there is a relationship between preferring open techniques to the extent that surgeons have more years of experience.

Mucinous adenocarcinoma arising from a tailgut cyst: A case report.

BACKGROUND: Retrorectal hamartomas or tailgut cysts (TCs) are rare. In most cases, they are asymptomatic and benign; however, rarely, they undergo malignant transformation, mainly in the form of adenocarcinoma. CASE SUMMARY: A 55-year-old woman presented to our hospital with lower back pain. On magnetic resonance imaging, a large pelvic mass was found, which was located on the right of the ischiorectal fossa, extending to the minor pelvis. The patient underwent extensive surgical resection of the lesion through the right buttock. Histological examination confirmed the diagnosis of a retrorectal mucinous adenocarcinoma originating from a TC. Surgical resection of the tumour was complete, and the patient recovered without complications. The pilonidal sinus was then excised. One year later, semi-annual positron emission tomography-computed tomography and magnetic resonance imaging scans did not reveal any evidence of local recurrence or metastatic disease. CONCLUSION: Preoperative recognition, histological diagnosis, and treatment of TCs pose significant challenges. In addition, the possibility of developing invasive mucinous adenocarcinoma, although rare, should be considered.

Unroofing curettage for treatment of simple and complex sacrococcygeal pilonidal disease.

Purpose: Sacrococcygeal pilonidal disease is a chronic inflammatory condition with an incidence of 26:100,000 in the United States. However, its etiology and optimal treatment remain controversial. Methods: We included 129 and 74 patients with simple and complex sacrococcygeal pilonidal disease, respectively. The primary outcome was pilonidal sinus recurrence after unroofing curettage. Secondary outcomes were pain scores, time to return to work/school, and time to complete recovery. Results: At a median follow-up of 53 months, the recurrence rate was 4.9% in all patients, not significantly higher in subjects with the complex disease. Duration of surgery (15.4 minutes vs. 12.2 minutes), time to return to school/work (9.8 days vs. 7.7 days), and complete healing time (44 days vs. 36 days) were longer in patients with the complex disease. Postoperative complication rates, pain scores, and quality of life scores between the 2 groups did not differ. Conclusion: Unroofing curettage may be a good first-choice treatment for both simple and complex sacrococcygeal pilonidal disease.

Surgical View of Morphological and Pathogenetic Identity of Pilonidal Cysts and Acne Inversa.

<b>Introduction:</b> As a rule, the treatment of pilonidal cysts is based on a surgical approach. Surgical treatment depends on the form of the disease and surgeon's preferences regarding the method. The treatment process does not consider preoperative treatment that would affect the structural components of the skin involved in the pathological process. The results of surgical treatment remain unsatisfactory, leading to a significant number of recurrences and long-term healing of the postoperative wound. </br></br> <b> Materials and methods:</b> Morphological examination of the pieces of skin with altered sacrococcygeal tissues after radical surgical treatment of 46 patients with pilonidal cyst of the sacrococcygeal region was performed, and 46 patients with acne inversa of the intergluteal cleft, groin and scalp were selected. The sex distribution of patients with pilonidal cysts was as follows: 43 (91.3%) male patients, 3 (6.5%) female patients. Among 46 patients with acne inversa and dissecting cellulitis, the distribution was as follows: 32 (69.6%) male patients and 14 (30.4%) female patients. Patients with pilonidal cysts of the sacrococcygeal region underwent surgical treatment according to the developed method of economical median resection using sutures with internal fixation. </br> </br> <b> Results:</b> Considering and comparing the morphological picture observed in the pathomorphological examination of histological specimens in patients with pilonidal cysts, acne inversa, dissecting cellulitis, the similarity of changes in most patients is noteworthy. "Acne inversa" was first described in 1839 by Velpeau, who originally called the disease "hydradenitis suppurativa", believing that inflammatory changes occur in the sweat glands [1-3]. In 1854, surgeon Verneuil described this disease, and later it was named after him. We observed chronic proliferative inflammation in different layers of the dermis and subcutaneous tissue (the main focus is in the subcutaneous tissue, but closely related to the dermis and epidermis). </br></br> <b>Discussions:</b> Pilonidal cyst of the sacrococcygeal region, especially without hair in the cavity of the cyst, can be considered as a type of acne inversa with appropriate location. We believe that the use of local and systemic retinoids, namely isotretinoin, in the treatment of patients with this disease other than surgery, together with other groups of drugs traditionally used in the treatment of pilonidal cysts, may be promising in the treatment of pilonidal cysts.

Eight Patients With Pilonidal Carcinoma in One Decade-Is the Incidence Rising?

INTRODUCTION: Carcinoma secondary to pilonidal disease is very rare with fewer than 130 reported cases so far. It is presumed that underreporting and underpublishing contribute to the low reported incidence. METHODS: A post was published on a closed Facebook group with about 30,000 Syrian doctors asking if anyone had ever seen a patient with pilonidal carcinoma before. The patients' data were collected retrospectively from the treating physicians. RESULTS: Between 2010 and 2019, we identified eight patients with pilonidal carcinoma. All patients were males with a mean age of 55.5 years. The mean interval between diagnosis of pilonidal disease and diagnosis of carcinoma was 6.9 years. A growing ulcer on the background of a pilonidal sinus disease was the presenting complaint in 50% of cases. Three patients were lost from follow-up after the diagnosis due to referral. All other five patients underwent surgical resection and three of them received postoperative chemoradiation. Four patients were followed for six months or longer: two died of metastases, one survived after recurrence and re-excision, and one survived with no recurrence. CONCLUSION: This paper presents the largest cohort of pilonidal carcinoma so far and the first that describes the disease in the Syrian population. Due to underreporting, the real incidence of pilonidal carcinoma exceeds what is reported so far in the literature.

[Pilonidal cyst of the scalp following a single minor trauma]. / Kyste pilonidal du scalp secondaire à un traumatisme inaperçu : à propos d'un cas.

The pilonidal cyst is an inflammatory disease occurring when a hair follicle penetrates inside a surgical wound. Uncommon in the scalp region, the pilonidal sinus is typically encountered in the sacrococcygeal regions. A single minor trauma of the scalp can be an inductor factor. The surgical treatment includes one-piece excision of the cyst followed by direct closure. We report a case of a 4-year-old child presenting a pilonidal sinus of the scalp following a single minor trauma.

Chronic Pilonidal Cyst with Malignant Transformation: A Case Report and Literature Review.

A 63-year-old male with a 20-year history of a chronic, recurrent sacrococcygeal pilonidal cyst was referred to our outpatient clinic. He had received multiple surgical resections in the past with benign pathology. He presented with a verrucous wart-like midline mass on the superior gluteal cleft that had grown since his last resection. The patient subsequently underwent resection of the mass with bilateral gluteal rotational flaps. Pathology showed squamous cell carcinoma with tumor-free margins, and further imaging showed no evidence of metastatic disease. It is believed chronic inflammation with subsequent genetic and impaired DNA repair mechanisms is the leading cause of malignancy. The treatment of choice for pilonidal carcinoma is surgical resection with free margins. Reconstruction methods can be utilized to repair the tissue defect. Pilonidal carcinoma has high mortality risk with surgical treatment yielding a disease-free 5-year survival rate of 55% of patients and a high recurrence rate of 50%. The role of chemoradiotherapy is currently unclear.