Effectiveness of fascial tissue flaps and skin flaps with layered sutures for repair of wounds after excision of sacrococcygeal pilonidal sinus / 中国修复重建外科杂志

OBJECTIVE@#To investigate the feasibility and effectiveness of fascial tissue flaps and skin flaps with layered sutures for repairing wounds after excision of sacrococcygeal pilonidal sinus.@*METHODS@#Between March 2019 and August 2022, 9 patients with sacrococcygeal pilonidal sinus were admitted, including 7 males and 2 females with an average age of 29.4 years (range, 17-53 years). The disease duration ranged from 1 to 36 months, with a median of 6 months. There were 7 cases with obesity and dense hair, 3 cases with infection, and 2 cases with positive bacterial culture of sinus secretion. The wound area after excision ranged from 3 cm×3 cm to 8 cm×4 cm, with a depth of 3-5 cm, reaching the perianal or caudal bone; there were 2 cases with perianal abscess formation and 1 case with caudal bone inflammatory edema. Enlarged resection was performed during operation, and the fascial tissue flap and skin flap were designed and excised at both left and right sides of the buttock, ranging from 3.0 cm×1.5 cm to 8.0 cm×2.0 cm. A cross drainage tube was placed at the bottom of the wound, and the fascial tissue flap and skin flap were advanced and sutured in three layers, namely, 8-string sutures in the fascial layer, barbed wire reduction sutures in the dermis, and interrupted skin sutures.@*RESULTS@#All 9 patients were followed up 3-36 months, with an average of 12 months. All incisions healed by first intention, and no complication such as incisional dehiscence or infection in the operative area occurred. There was no recurrence of sinus tracts, the shape of gluteal sulcus was satisfactory, both sides of buttocks were symmetrical, local incision scar was concealed, and the shape disruption was minimal.@*CONCLUSION@#Fascial tissue flaps and skin flaps with layered sutures for repairing wounds after excision of sacrococcygeal pilonidal sinus can effectively fill the cavity and reduce the incidence of poor incision healing, with the advantages of small trauma and simple operation.

Angiolipoma sacro. Reporte de un caso / Sacral angiolipoma. A case report

Fundamento: Los angiolipomas son tumores benignos que se presentan en adultos con una localización, preferentemente, en el espacio epidural posterior torácico. Objetivo: Presentar un caso que debutó con un traumatismo axial lumbosacro donde se evidenció una localización poco común de la lesión y sin relación con las estructuras del canal raquídeo. Presentación del caso: Hombre de 25 años que se cayó y debido a ello se le hizo un traumatismo directo en la región sacrococcígea con dolor y aumento de volumen regional, asociado a parestesias glúteas. Los estudios radiológicos evidenciaron una fractura del cóccix y la presencia de una lesión ubicada en las partes blandas, de aspecto redondeado, homogéneo, sólido, de poco más de 50 mm de diámetro. Se le realizó tratamiento quirúrgico que consistió en coccigectomía subperióstica y exéresis macroscópica de la masa. El estudio histológico concluyó el diagnóstico de un angiolipoma. Conclusiones: Los angiolipomas son tumores raros que tienen características radiológicas peculiares, requieren de alta sospecha clínico-imagenológica para indicar los estudios y el tratamiento. La exéresis total es recomendada para evitar la recurrencia y mejorar el pronóstico.

Background: Angiolipomas are benign tumors that appear in adults with special location in the posterior thoracic epidural position. Objective: To present a case that appeared with a lumbosacral axial trauma where a non-common lesion location was evidenced with no relation among the structures of the spinal canal. Case presentation: 25-year-old man who fell down, consequently suffered a painful direct trauma to the sacrococcygeal region and increased regional volume, associated with gluteal paresthesias. Radiological studies showed a fracture of the coccyx and presence of a lesion located in the soft tissues, with a rounded, homogeneous, solid aspect, a little more than 50 mm in diameter. Surgical treatment consisted of subperiosteal coccygectomy and macroscopic excision of the mass. Histological study concluded the diagnosis of an angiolipoma. Conclusions: Angiolipomas are rare tumors with peculiar radiological features, they require high clinical-imaging suspicion for studies and treatment. Total excision is recommended to avoid recurrence and improve prognosis.

Sacrococcygeal teratoma: A case report

Sacrococcygeal teratomas (SCTs) are the most common extragonadal germ cell tumors, comprised different types of tissues that come from at least two of three germ cell layers. Depending on the tissues that are included, they are divided into mature, immature, and malignant. The incidence of SCT in infants and children is 1 in 35,000–40,000 live births. We are reporting a case of type I SCT. The patient was gravida 3, para 1, and abortion 1, which was diagnosed during antenatal ultrasound examination at 22 weeks of gestation and the termination was done after counseling the parents. A female fetus with a tumor in the sacrococcygeal region, weighing 800 g was delivered. The baby was sent to the department of anatomy. SCTs develop at the base of the coccyx and are thought to be derived from Henson’s node a rounded and elevated area at the cranial end of the primitive streak. This primitive streak consists of totipotent cells, which are able to transform into any type of cells.

Full-term delivery following spontaneous rupture of a giant fetal sacrococcygeal teratoma: a case report / 中华围产医学杂志

We describe a case of fetal sacrococcygeal teratoma detected by ultrasound at 14 gestational weeks. The tumor was classified as "type Ⅰ" by ultrasonography combined with MRI. The cystic part accounted for over 60% of the mass before 26 weeks and ruptured spontaneously at 28 weeks. The size of the tumor was 12.8 cm×9.7 cm×12.3 cm at 36 +5 gestational weeks. A female newborn was born through cesarean section at 37 weeks of gestation and had the tumor removed surgically on the postnatal day 4. Postoperative follow-up showed that the neonate had a good prognosis without physiological dysfunction.

Research progress of protective dressing on prevention of pressure injury of sacrum / 中国实用护理杂志

The sacrum is a common site of stress injury. The occurrence of pressure ulcers not only leads to the aggravation of the patient′s condition, the prolongation of hospital stay, the increase of medical costs, the decline of life quality, but also aggravates the burden of society, family and medical staff. Early reasonable and effective application of sacral dressing can prevent the occurrence of pressure injury. In this study, the characteristics and effectiveness of different types of sacral dressings were reviewed by reviewing relevant literatures at home and abroad and summarizing the existing relevant studies, so as to provide guidance for clinical application.

Prenatal diagnosis and prognostic factors analysis of fetal sacrococcygeal teratoma / 中华妇产科杂志

Objective:To investigate the prenatal diagnosis and prognostic factors of fetal sacrococcygeal teratoma (SCT).Methods:A retrospective analysis was performed on 41 pregnant women who were diagnosed with fetal SCT by prenatal ultrasound at the Women′s Hospital, Zhejiang University School of Medicine from January 2014 to September 2021. The prenatal imaging features and pregnancy outcomes, including tumor volume to fetal weight ratio (TFR), proportion of solid tumor, tumor growth rate (TGR), fetal hydrops, placentomegaly and polyhydramnios were analyzed. Receiver operating characteristic (ROC) curve was used to determine the critical values of TFR and TGR for predicting adverse fetal outcomes.Results:(1) Among the 41 pregnant women with fetal SCT, the diagnostic gestational week of ultrasound was (24.2±2.9) weeks (range: 18-28 weeks). Among them, 1 case progressed to fetal hydrops and induced labor at 22 weeks of gestation, 1 case developed intrauterine death and induced labor at 29 weeks of gestation, and 39 pregnancies continued until delivery. Among the 39 cases of continued pregnancy, 1 case underwent cesarean section at 31 weeks of gestation due to malignant polyhydramnios and increased fetal cardiothoracic ratio in the third trimester, 1 case underwent cesarean section at 32 weeks of gestation due to fetal heart failure, and 1 case underwent cesarean section at 32 weeks of gestation due to fetal heart failure and hydrops. The other 36 cases underwent surgical resection of tumor within 3 weeks after birth with good prognosis. (2) TFR>0.12 before 28 weeks of gestation could predict poor fetal prognosis, with a sensitivity of 100.0%, a specificity of 86.1% and an area under curve (AUC) of 0.922 ( P<0.01). Among the fetuses with TFR>0.12, 5/10 had poor prognosis, while the fetuses with TFR≤0.12 all had good prognosis (100%,31/31), and the difference between the two groups was statistically significant ( P<0.001). (3) TGR>48 cm 3/week could predict poor fetal prognosis with a sensitivity of 100.0%, a specificity of 78.3% and an AUC of 0.880 ( P<0.05). (4) Among the 28 SCT fetuses delivered in our hospital, the incidence rate of poor fetal prognosis was 0 (0/20) in those with solid tumor component<50%, and 5/8 in those with solid tumor component ≥50%, and the difference between the two groups was statistically significant ( P<0.01). The incidence rate of poor fetal prognosis was 2/2 in those with placentomegaly (all with fetal hydrops), and 12% (3/26) in those without placentomegaly. The risk of poor fetal prognosis was 8.67 times higher in those with placentomegaly than those without placentomegaly, and the difference between the two groups was statistically significant ( P<0.05). The incidence rate of poor fetal prognosis in those with polyhydramnios was 3/7, and 10% (2/21) in those without polyhydramnios, but there was no statistically significant difference between the two groups ( P>0.05). Conclusion:TFR combined with solid tumor morphology, TGR, and presence of placentomegaly could predict the adverse pregnancy outcomes of fetal SCT.

Diagnóstico prenatal del síndrome de Currarino completo. Presentación de un caso / Prenatal diagnosis of complete Currarino syndrome. Case report

RESUMEN Fundamento: El síndrome de Currarino es una enfermedad poco frecuente, presenta varias malformaciones conformadas por una tríada: estenosis anal, malformación sacrococcígea y masa presacra; su diagnóstico se realiza con frecuencia en edad adulta. Objetivo: Reportar un caso que se diagnosticó con síndrome de Currarino en etapa fetal. Caso clínico: Se reportó un feto del sexo masculino de 22 semanas de gestación, con síndrome de Currarino que al realizarle la necropsia se constató la presencia de: defecto sacro coccígeo (ausencia total del sacro), masa o tumoración presacra (de aspecto quístico), ano imperforado y ausencia de pliegue interglúteo, estenosis del sigmoide y bolsa escrotal única, riñón único, pélvico y poliquístico, con salida de 2 uréteres. Conclusiones: El síndrome de Currarino se caracteriza por una tríada de presentaciones, en muchos casos se puede pasar por alto y existir subdiagnósticos, por lo que su detección precoz permite evitar complicaciones en la etapa adulta y mejorar la calidad de vida.

ABSTRACT Background: Currarino syndrome is a non-frequently disease, presenting several malformations consisting of a triad: anal stenosis, sacrococcygeal malformation and presacral mass; its diagnosis is habitually performed in adulthood. Objective: To report a case diagnosed with Currarino syndrome in the fetal stage. Case report: A 22-week gestation male fetus with Currarino syndrome, at necropsy he was found to have: sacrococcygeal defect (total absence of the sacrum), presacral mass or tumors (cystic appearance), non-perforated anus and absence of intergluteal fold, sigmoid stenosis and single scrotal pouch, single, pelvic and polycystic kidney, with exit of 2 ureters. Conclusions: Currarino syndrome is characterized by a triad of appearances, in many cases it can be overlooked and underdiagnosed, so early detection can prevent complications in adulthood and improve life quality.

Pure yolk sac tumor of sacrococcygeal region

The sacrococcygeal region is the most common site for the extragonadal germ cell tumors comprising seminomatous and non-seminomatous tumors. Seminomatous tumors are seminomas, and non-seminomatous tumors comprise mainly teratoma (mature and immature), yolk sac tumor (YST), embryonal carcinoma (EC), and choriocarcinoma. These tumors occur in newborns, infants, and adolescents. Other common sites for extragonadal germ cell tumors are the brain and mediastinum, although they may occur anywhere in the body. These tumors may occur in mixed as well as pure form. So, sectioning from different areas should be done before labeling them as pure germ cell tumors. YST, in its pure form, is rare and therefore should not be missed as it is chemosensitive. The patient should be thoroughly assessed clinically. Imaging also becomes necessary while evaluating swelling in the sacrococcygeal region and can aid in differentials. When the clinical and imaging suspicion of either Sacrococcygeal teratoma or other germ cell tumor is high, serum biomarkers as alfa-fetoprotein should be requested. The serum levels are necessary and should be done preoperatively, postoperatively, and during the course of chemotherapy as follow-up. However, the final diagnosis rests on the histopathological diagnosis. We report one such case of pure YST in the sacrococcygeal region in a 9-month-old female child. The imaging suggested sacrococcygeal teratoma type 4, and high alfa-fetoprotein levels were determined postoperatively.

Transient skin and fur color change after trichotomy of the sacrococcygeal region for epidural anesthesia in a domestic cat (Felis catus) / Mudança transitória da cor da pele e pelo após tricotomia da região sacrococcígea para anestesia epidural em gata doméstica (Felis catus)

A clinical case in which skin and hair color change occurred after sacrococcygeal epidural anesthesia in a nine-month-old Siamese cross queen undergoing ovariohysterectomy (OHE) is described. Six weeks after surgery, during a re-check, it was noted that in the sacrococcygeal region the color of the skin and new hair growth was dark with a color comparable to the color present on the body extremities (muzzle, pinnae, legs, and tail). The skin and new hair growth of the shaved abdomen presented a standard color. The key enzyme of the melanogenic pathway in mammals is tyrosinase (TYR), and the Siamese temperature-sensitive phenotype is the result of genetic mutations that makes TYR function thermolabile. The activity of TYR in these cats is limited to the extremities where the temperature is lower while pigment production is impaired in the other body areas. The trichotomy of the sacrococcygeal region performed during wintertime in an outdoor cat was probably the trigger for increased activity of TYR in this area promoting pigment production. The absence of the same alterations in the abdominal area may be justified by less exposure of that region to the external environment, as well as to the feline habits of sedentarism, that avoid significant cooling in these regions. This report highlights the importance of taking this type of occurrence into account when performing an epidural in the Siamese cat breed. Also, to avoid skin color change in this breed, the authors recommend a midline abdominal instead of a flank approach to perform OHE.(AU)

Descreve-se um caso clínico no qual ocorreu mudança na cor da pele e do pelo após anestesia epidural sacrococcígea numa gata cruzada de raça Siamês de nove meses submetida à ovariohisterectomia (OVH). Seis semanas após a cirurgia, durante uma avaliação pós-operatória, notou-se que na região sacrococcígea, a cor da pele e o crescimento do pelo apresentavam uma cor escura, comparável à das extremidades do corpo (face, orelhas, membros e cauda). A pele e o crescimento do pelo do abdómen, que também havia sido tosquiado, apresentavam uma cor padrão. A enzima chave da via melanogênica em mamíferos é a tirosinase (TYR) e o fenótipo siamês sensível à temperatura é o resultado de mutações genéticas que tornam a função TYR termolábil. A atividade da TYR nestes gatos é limitada às extremidades onde a temperatura é mais baixa, enquanto a produção de pigmento é prejudicada em outras áreas do corpo. A tricotomia da região sacrococcígea realizada durante o inverno nesta gata com acesso livre ao ambiente externo, provavelmente determinou um aumento da atividade da TYR nesta área, promovendo a produção de pigmento. A ausência das mesmas alterações na região abdominal pode ser justificada pela menor exposição desta área do corpo ao ambiente externo, também devido aos hábitos felinos de sedentarismo, que evitam resfriamento significativo nestas regiões. Este relato destaca a importância de se levar em consideração a possibilidade deste tipo de ocorrência quando da realização de uma anestesia epidural nesta raça de gatos. Além disso, os autores recomendam uma abordagem abdominal na linha média ao invés de uma abordagem de flanco para realizar a OVH nesta raça, a fim de evitar a alteração da cor da pele.(AU)

Asymmetric twinning: A preterm baby with Sacrococcygeal Teratoma and parasitic twin born to a 16-year-old Primigravida / Philippine Journal of Obstetrics and Gynecology

@#A 16-year-old primigravida, at 33 weeks and 5 days age of gestation came in due to preterm labor. Sonographic examination revealed an incidental finding of a mass attached to the sacrococcygeal area. The mass has a cystic and solid component diagnosed as sacrococcygeal teratoma. Attached to the mass were two lower extremity structures identified as femurs with feet and was considered as an underdeveloped parasitic twin. A classical cesarean section was performed because of the advanced preterm labor, and a live female infant weighing 2500 g was delivered. The parasitic lower limbs, however, inadvertently detached during delivery. There was a high index of suspicion because of a larger fundic height of 37 cm compared to the age of gestation and the difficult palpation on Leopold's maneuver. Accuracy of ultrasound findings helped the obstetricians to a timely and prepared for delivery.

Laser pilonidotomy - a new approach in management of complex pilonidal sinus disease: an exploratory study / Pilonidotomia a laser - uma nova abordagem no tratamento da doença do seio pilonidal complexo: um estudo exploratório

Abstract Background The treatment of pilonidal sinus disease still remains challenging mainly because of multiple factors responsible for wound healing and its recurrence. With recent advances in surgical field, use of laser found to be an effective technique in the destruction of a pilonidal cyst. Laser Piolonidotomy is a new promising technique. Methodology An exploratory study was planned with the Aim, to evaluate a new technique for the excision of pilonidal sinus. Objectives were to investigate its effectiveness in terms of operation time, healing time, and the duration of hospitalization, resumption of normal activity the degree of postoperative complications and rate of recurrence and patient's satisfaction. All the patients with pilonidal sinus were categorized and laser pilonidotomy was planned for patients satisfying inclusion criteria. Data collected in pre-structured, pre-tested proforma and analyzed using SPSS. Results Mean duration of Procedure was 33 min (SD = 11), mean duration of Hospital Stay was 12 h (SD = 3), resumption of normal activity within 4 days (SD = 2), mean duration for Complete Wound Healing by secondary intention 6 Weeks (SD = 1.25). Among complications, infection reported in 1.08%. The difference between the mean pre and post-operative VAS score was statistically highly significant (p < 0.0001). Recurrence rate was 3.24%. Success rate was 96.75% and Overall patient's satisfaction was 97.84%. Conclusion Laser Pilonidotomy is effective in destruction of a pilonidal cyst with good success rate, fewer complications and with high patient's satisfaction.

Resumo Justificativa O tratamento da doença do seio pilonidal ainda permanece desafiador, principalmente devido a vários fatores responsáveis pela cicatrização das feridas e sua recorrência. Com os recentes avanços no campo cirúrgico, o uso do laser mostrou ser uma técnica eficaz na destruição de um cisto pilonidal. A piolonidotomia a laser é uma nova técnica promissora. Metodologia Foi planejado um estudo exploratório com o objetivo de avaliar uma nova técnica para a excisão de seio pilonidal. Os objetivos foram investigar sua eficácia quanto aos tempos de operação, de cicatrização, de internação e de retomada da atividade normal, além do grau de complicações pós-operatórias, a taxa de recorrência e o índice de satisfação do paciente. Todos os pacientes com seio pilonidal foram categorizados, e a pilonidotomia a laser foi planejada para os pacientes que satisfizessem os critérios de inclusão. Os dados foram coletados em forma pré-estruturada e pré-testada e analisados usando o SPSS. Resultados O tempo médio do procedimento foi de 33 min (DP = 11), o tempo médio da internação hospitalar foi de 12 horas (DP = 3), o tempo médio de retomada da atividade normal foi de 4 dias (DP = 2) e o tempo médio de cicatrização completa por intenção secundário foi de 6 semanas (DP = 1,25). Entre as complicações, infecção foi observada em 1,08%. A diferença entre as médias do escore EVA pré e pós-operatório foi estatisticamente significativa (p < 0,0001). A taxa de recorrência foi de 3,24%. A taxa de sucesso foi de 96,75% e o índice de satisfação geral do paciente foi de 97,84%. Conclusão A pilonidotomia a laser é eficaz na destruição de um cisto pilonidal com boa taxa de sucesso, menos complicações e com alta satisfação do paciente.

Role of Deep Tension Sutures in Closing the Defect Following Excision of Sacrococcygeal Pilonidal Sinus – A Case Series

Background: The midline sacrococcygeal pilonidal sinus is the common surgical condition among younger population. They present to surgical outpatient department with pain and history of pus discharge from natal cleft. These patients approach for permanent cure following repeated attacks of pain and abscess drainage. We present a new surgical technique of primary closure by applying deep tension sutures (DTS) to close the defect following excision of midline sacrococcygeal pilonidal sinus. The rationale behind this technique is to avoid prolonged hospital stay and early return to work.Materials and Methods: In this study, a group of five patients (one female and four male patients) with the age group between 18 and 35 years was studied for the effectiveness, duration of hospital stay post-operative complications, and recurrence following the new surgical technique of DTS. Following excision of midline sacral pilonidal sinus, the resulting elliptical wound varying from 6 cm to 10 cm was approximated using two or three DTS with No-1 Prolene. In this suturing technique, the sutures were held in place using small pieces of plastic tubing from intravenous drip set to avoid suture cutting through the skin. This technique was similar to abdominal wound closure in cases of complete wound dehiscence. The superficial part of the wound was approximated using No-3 zero Ethilon. In this procedure, author has not used any type of drain in the wound. No suture materials were used inside the wound to approximate the raw area (e.g., Vicryl suture). Patients were covered with IV antibiotics and analgesics for a period of 5 days. All sutures were removed on the 10th day.Results: There were no post-operative complications noted during the hospital stay and during follow-up period ranging from 2 months to 6 months. The scar was healthy with functionally, cosmetically acceptable results. There was no recurrence noted in our study group during the follow-up

Manejo in útero de teratoma sacrocoxigeo y resección postnatal / In utero management of sacrocoxygeal teratoma and postnatal resection

Describimos un caso de teratoma sacro-coxígeo gigante diagnosticado a las 21 semanas de gestación. Debido a los signos de robo vascular y de insuficiencia cardíaca fetal a las 24 semanas de gestación, se planteó la esclerosis del vaso nutricio por medio de laser Diodo. El procedimiento se realizó mediante punción percutánea guiada por ecografía en tres oportunidades, a las 25 semanas, a las 27 y a las 30 semanas. No hubo efecto secundario inmediato post tratamiento. La desvascularización fue parcial, debido a la híper-vascularización periférica de la masa. Los signos de insuficiencia cardíaca fetal se normalizaron después de 1 semana con disminución de crecimiento del tumor. El parto se realizó por cesárea a las 34 semanas, por rotura prematura de membranas y trabajo de parto avanzado en presentación pelviana. Tras 6 horas posteriores a su nacimiento se realizó cirugía de exceresis tumoral por técnica convencional, donde se extirpó por completo el teratoma sacrocoxígeo con un peso total de 630 gramos, material que se envió a anatomía patológica, cuyo diagnóstico final fue teratoma inmaduro grado III. Conclusión: La cirugía mínimamente invasiva con esclerosis del vaso nutricio parece mejorar el resultado perinatal en casos de teratoma sacro-coxígeo (TSC) fetal de alto riesgo. La identificación y el tratamiento temprano nos pueden dar resultado exitoso

We describe a case of giant sacrococcygeal teratoma (SCT) diagnosed at 21 weeks of gestation. Due to the signs of vascular steal and fetal heart failure at 24 weeks of gestation, sclerosis of the nutrient vessel was proposed by a laser diode. The procedure was performed by percutaneous puncture guided by ultrasound on three occasions, at 25 weeks, at 27 and at 30 weeks. There was no immediate side effect after treatment. The devascularization was partial, due to the peripheral hypervascularization of the mass. Signs of fetal heart failure normalized after 1 week with decreased tumor growth. Delivery was performed by cesarean at 34 weeks, due to premature rupture of the membranes and advanced labor in pelvic presentation. Six hours after birth, tumor excision was performed using a conventional technique, in which SCT with a total weight of 630 grs was completely removed, material that was sent to the pathological anatomy. Final diagnosis was immature teratoma grade III. Conclusions: Minimally invasive surgery with sclerosis of the nutrient vessel seems to improve the perinatal outcome in cases of high-risk fetal SCT. Identification and early treatment can give us a successful outcome

Management mature sacrococcygeal teratoma: a case report

Mature sacrococcygeal teratoma (SCT) are uncommon neoplasm comprised of mixed elements derived from three germ layers. They attract attention because of their gross appearance and bizarre histology. Tumor of the sacrococcygeal region, referred to as sacrococcygeal teratomas (SCTs) in most reports, generally present in two distinct fashions: neonates with large predominately external lesions, which are detected in utero or at birth and are rarely malignant; and older infants and children who present with primarily hidden pelvic tumors with a much higher rate of malignancy. Sacrococcygeal teratomas are the most common extragonadal tumor in neonates, accounting for up to 70% of all teratomas in childhood. A 3 to 4:1 female to male ratio is generally reported. Surgical resection remains the mainstay of therapy and recurrence is rare following complete excision. A 14 years old girl was presented to us by her parents with a mass at the buttock since birth. She was delivered at home by traditional midwife after a term, unsupervised pregnancy to a 35 years old woman. Both pregnancy and delivery were uneventful. Direct rectal examination revealed a mass has displaced the recto-sigmoid anteriorly. The CT scan revealed a heterogenous mass with a solid, cystic, and multiple classification density at the anterior of coccygeus bone, and push the coccygeus to the posterior. The mass infiltrated the subcutis, and attached to the posterior aspect of rectum. A 14 years old girl presented by mature SCT since newborn comprising ectoderm, mesoderm, and endoderm tissue. She had a complete surgical excision (including coccygectomy) with primary wound closure. A complete surgical excision remains the mainstay of therapy of mature SCT.

Sacrococcygeal giant hemangiopericytoma: a rare presentation and management

Hemangiopericytoma is a tumor derivated from the mesenchymal cells that surround the capillary of blood vessels. It has a several anatomic localization and clinic scenarios, it´s presentation with a media in the 6th decade; an early diagnostic and treatment represents a better clinic scenario for the patient. The next article presents a case report of a 51 years old man with a tumor localized in the sacrococcygeal space, with big dimensions that limited his daily activities without other symptomatology, image studies with no evidence of distant progression. Surgical resection was performed, removing mass depending from mayor and minor gluteus, achieving an immediate reconstruction with a satisfactory aesthetic and functional result. The authors presented this rare case due to the lack of published information and how it can be treated to achieve good results.

Adult sacrococcygeal teratoma: a retrospective study over eight years at a single institution / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Objective: To determine the clinical, imaging, and histological features, and surgical resection modalities and outcomes of adult sacrococcygeal teratoma (SCT). Methods: Adult patients with histopathologically diagnosed SCT were enrolled in our hospital between August 2010 and August 2018. Each patient’s characteristics and clinical information were reviewed. Results: There were 8 patients in the study (2 males, 6 females) with a median age of 34 years (range, 18–67 years). The time to clinical symptoms was 14 d to 35 years, with a median time of 4 years. Six patients presented with symptoms of sacrococcygeal pain, and four with signs of sacrococcygeal mass and ulceration in the sacrococcygeal region. Six patients were evaluated using a combination of computed tomography (CT) and magnetic resonance imaging (MRI). All patients showed a presacral tumor with heterogeneous intensity on CT images. All patients underwent surgical treatment, including 6 parasacral, 1 transabdominal, and 1 combined anterior-posterior surgery cases. Seven patients were histopathologically diagnosed with benign mature SCT, and have shown no recurrence. One patient had malignant SCT, with recurrence at 84 months after surgery. After a second surgery, the patient had no recurrence within 6 months follow-up after re-resection. Conclusions: Our retrospective study demonstrated: (1) adult SCT is difficult to diagnose because of a lack of typical clinical symptoms and signs; (2) a combination of CT and MRI examination is beneficial for preoperative diagnosis; (3) the choice of surgical approach and surgical resection modality depends on the size, location, and components of the tumor, which can be defined from preoperative CT and MRI evaluation; (4) most adult SCTs are benign; the surgical outcome for the malignant SCT patient was good after complete resection. Even for the patient with recurrent malignant SCT, the surgical outcome was good after re-resection.

Wide Excision Using Indigo-Carmine to Minimize the Recurrence of a Pilonidal Cyst: Technical Note / 대한정형외과학회잡지

The cause of a pilonidal cyst is unclear, and treatment is still under debate. In Korea, the incidence of this disease is lower than that of Western countries, and it has often been misdiagnosed as a simple abscess. When pilonidal cysts are diagnosed, the principle of treatment is not to leave a residue, and a wide excision is needed to reduce the recurrence rate. This paper introduces a wide excision technique using Indigo-carmine dye to minimize the recurrence of a pilonidal cyst.

A Case of Sacrococcygeal Chordoma / 대한피부과학회지

No abstract available.

Squamous cell carcinoma arising in a sacrococcygeal tailgut cyst

Abstract: We report a case of squamous cell carcinoma originated from a sacrococcygeal tailgut cyst in a 73-year-old female patient. Tailgut cysts are generally multilocal and have a layer of either columnar, squamous or transitional epithelium, or a combination of these. This case was treated with surgical excision and radiotherapy. Cancer presentation of a congenital abnormality in old age is a rare entity. This report is the first case of squamous cell carcinoma developing in a tailgut cyst without any synchronization, as an isolated (pure) pathology.

Cirugía fetal en teratoma sacrococcígeo

Sacrococcygeal teratoma is the most common neonatal tumor. In a large number of cases, fetuses are born at term and the teratoma can be resected without complications. However, in another group, prematurity, hydrops and cardiac failure do not allow pregnancy interruption without consequences for the fetus. Here is where fetal surgery has a place. We conducted a search of the literature related to sacrococcygeal teratoma and case reports where surgery was performed, including those with details on the patient's preparation, surgery, and the postoperative period. The average gestational age of presentation in ultrasound is 23 weeks. There is more literature on open surgery, and the main indication is hydrops or imminent cardiac failure. The reported cases with minimally invasive therapy are the least, with controversial results. Sacrococcygeal teratoma in the newborn is an entity with very good prognosis depending on the case, time of diagnosis, type of tumor, and malignancy potential. However, those of prenatal diagnosis are at high risk of complications and death. There are several reports of open surgery and EXIT procedure (special delivery technique where the sacrococcygeal teratoma is exposed through a limited incision in the uterus) with good surgical results but with high maternal and fetal comorbidity. Therefore, minimally invasive techniques have emerged to reduce the potential risks of open surgery; nevertheless, there are contradictory results.

El teratoma sacrococcígeo es el tumor neonatal más común. En un gran número de los casos los fetos llegan al término y pueden ser resecados sin complicaciones. Sin embargo, en otro grupo de pacientes, su prematuridad, el hidrops y la falla cardiaca no permiten interrumpir el embarazo sin consecuencias para el feto. Aquí es donde la cirugía fetal tiene cabida. Se realizó una búsqueda de la literatura relacionada al teratoma sacrococcígeo y reportes de casos donde se practicó cirugía. Se incluyeron también aquellos en donde se detallaba la preparación de la paciente, el transoperatorio y postoperatorio. La edad gestacional de la presentación usualmente fue durante la ecografía estructural, con una media de las 23 semanas. Se encuentra más literatura acerca de cirugías abiertas y la principal indicación es el hidrops y/o la falla cardiaca inminente. Los casos reportados realizados con mínima invasión son los menos, con resultados controversiales. El teratoma sacrococcígeo en el recién nacido es una entidad con muy buen pronóstico dependiendo del caso, tiempo del diagnóstico, tipo del tumor y potencial de malignidad del mismo. Sin embargo, el diagnosticado prenatalmente, cursa con alto riesgo de complicaciones y muerte. Hay varios casos reportados de cirugía abierta y procedimiento EXIT (técnica especial en la que el tumor es expuesto a través de una pequeña incisión) con buenos resultados quirúrgicos, pero con alta comorbilidad materna y fetal. Por ende, han surgido técnicas mínimamente invasivas para disminuir los riesgos potenciales de la cirugía abierta; a pesar de esto hay resultados contradictorios.