Preoperative assessment of retrorectal tumours

Coccygeal tumours unveiled: a retrospective cohort analysis from a tertiary referral centre

BACKGROUND

Isolated tumours affecting the coccyx are infrequent, with only a handful of documented cases in the literature. Herein, we highlight the most extensive consecutive case series involving various isolated coccyx tumours with varied clinical presentations and imaging features.

METHODS

A retrospective search of our tertiary Orthopaedic oncology institute's oncology and Radiology database [Radiology Information System, Picture Archiving and Communication System, and Computerised Radiology Information System] for the keyword "Coccyx" and "Tumour" was performed over 15 years (between December 2007 and August 2022). Data collected was correlated with local histopathology and laboratory records. Patient demographics, clinical characteristics, and complementary imaging findings were recorded for analysis.

RESULTS

One hundred and three lesions originating in the coccyx with a mean age of 62 years (range 25-90 years) were identified. There was a male preponderance with 59 male and 44 female patients (1.3:1.0). The most typical tumour noted was chordoma. Other lesions included a dermoid cyst, a myxopapillary ependymoma, a notochordal remnant, an osteochondroma, an Ewing sarcoma, and a teratoma.

CONCLUSION

Our analysis suggests that most of the tumours involving coccyx are chordomas with a few rarely encountered benign and malignant tumours. Radiological imaging plays a vital role in characterising isolated tumours affecting the coccyx and guiding appropriate patient management.

ADVANCES IN KNOWLEDGE

This is the largest reported series of coccygeal tumours. Chordoma is the commonest coccygeal tumour. Patients with unexplained coccydynia should undergo detailed investigations, preferably with cross-sectional imaging.

The management of retrorectal tumors - a single-center analysis of 21 cases and overview of the literature

AIM

Retrorectal tumors are rare and heterogeneous. They are often asymptomatic or present with nonspecific symptoms, making management challenging. This study examines the diagnosis and treatment of retrorectal tumors.

METHODS

Between 2002 and 2022, 21 patients with retrorectal tumors were treated in our department. We analyzed patient characteristics, diagnosis and treatment modalities retrospectively. Additionally, a literature review (2002-2023, "retrorectal tumors" and "presacral tumors", 20 or more cases included) was performed.

RESULTS

Of the 21 patients (median age 54 years, 62% female), 17 patients (81%) suffered from benign lesions and 4 (19%) from malignant lesions. Symptoms were mostly nonspecific, with pain being the most common (11/21 (52%)). Diagnosis was incidental in eight cases. Magnetic resonance imaging was performed in 20 (95%) and biopsy was obtained in 10 (48%). Twenty patients underwent surgery, mostly via a posterior approach (14/20 (70%)). At a mean follow-up of 42 months (median 10 months, range 1-166 months), the local recurrence rate was 19%. There was no mortality. Our Pubmed search identified 39 publications.

CONCLUSION

Our data confirms the significant heterogeneity of retrorectal tumors, which poses a challenge to management, especially considering the often nonspecific symptoms. Regarding diagnosis and treatment, our data highlights the importance of MRI and surgical resection. In particular a malignancy rate of almost 20% warrants a surgical resection in case of the findings of a retrorectal tumour. A local recurrence rate of 19% supports the need for follow up.

Robotic resection of presacral tumors

BACKGROUND

Presacral tumors are a rare entity typically treated with an open surgical approach. A limited number of minimally invasive resections have been described. The aim of the study is to evaluate the safety and efficacy of roboticresection of presacral tumors.

METHODS

This is a retrospective single system analysis, conducted at a quaternary referral academic healthcare system, and included all patients who underwent a robotic excision of a presacral tumor between 2015 and 2023. Outcomes of interest were operative time, estimated blood loss, complications, length of stay, margin status, and recurrence rates.

RESULTS

Sixteen patients (11 females and 5 males) were included. The median age of the cohort was 51 years (range 25-69 years). The median operative time was 197 min (range 98-802 min). The median estimated blood loss was 40 ml, ranging from 0 to 1800 ml, with one patient experiencing conversion to open surgery after uncontrolled hemorrhage. Urinary retention was the only postoperative complication that occurred in three patients (19%) and was solved within 30 days in all cases. The median length of stay was one day (range 1-6 days). The median follow-up was 6.7 months (range 1-110 months). All tumors were excised with appropriate margins, but one benign and one malignant tumor recurred (12.5%). Ten tumors were classified as congenital (one was malignant), two were mesenchymal (both malignant), and five were miscellaneous (one malignant).

CONCLUSIONS

Robotic resection of select presacral pathology is feasible and safe. Further studies must be conducted to determine complication rates, outcomes, and long-term safety profiles.

Factors affecting operative morbidity and long-term outcomes in patients undergoing surgery for presacral tumours: a multicentric cohort study from the Turkish Collaborative Group for Quality Improvement in Colorectal and Pelvic Surgery

AIM

Data regarding the operative management of presacral tumours present various dilemmas due to their rarity and heterogeneous nature. The aim of this study was to evaluate the management strategy, factors associated with operative morbidity and long-term postoperative outcomes in a large group of patients undergoing surgery for presacral tumours.

METHOD

This study was designed as a multicentre retrospective cohort study. Records of patients who underwent surgery for presacral tumours at 10 tertiary colorectal centres between 1996 and 2017 were evaluated.

RESULTS

One hundred and twenty seven patients (44 men) with a mean age of 46 years and body mass index of 27 kg/m2 were included. Fifty eight per cent of the patients had low sacral lesions (below S3). The operative approaches were transabdominal (17%), transsacral (65%) and abdominosacral (17%). The postoperative morbidity was 19%. Thirty per cent of the patients had a malignant tumour. Longer duration of symptoms (p = 0.001), higher American Society of Anesthesiologists score (p = 0.01), abdominosacral operations (p = 0.0001) and presacral tumours located above S3 (p = 0.004) were associated with an increased risk of postoperative morbidity. Overall long-term postoperative recurrence and mortality were 6% and 5%, respectively, within a 3-year mean follow-up period in patients with presacral malignant tumours.

CONCLUSION

Reduced physical condition, omission of symptoms prior to surgery, combined resections and high sacral tumours are the risk factors associated with postoperative complications in patients undergoing surgery for presacral tumours. Meticulous planning of the operation and intensified perioperative care may improve the outcomes in high-risk patients.

Adult sacrococcygeal teratoma: A review

Sacrococcygeal teratomas (SCT) in adults are extremely rare, and most SCTs are located either mainly outside the pelvis, with a small number of intrapelvic components, or mostly in the pelvis (types III and IV). The etiology of teratomas remains unknown. Most teratomas are benign, and approximately 1 to 2% of teratomas undergo malignant transformation, including squamous cell carcinoma, adenocarcinoma, sarcoma, and other malignancies. Most SCTs grow insidiously, and their symptoms are not easily detected in the early stages. Some cases may only be discovered through physical examination or compression symptoms when the tumor reaches a detectable size. Computed tomography and magnetic resonance imaging have high detection rates for presacral space-occupying lesions and can provide imaging details with guiding significance for the selection of surgical methods. Surgical resection is the preferred treatment option for SCT and can determine the pathological type. Common sacrococcygeal malignancies are mainly immature teratomas and mature teratomas. When the presence of malignant components is confirmed, the treatment model should be adjusted according to pathological type.

Risk factors for perioperative complications in laparoscopic surgeries of retrorectal cystic lesions

BACKGROUND

The incidence of retrorectal lesions is low, and no consensus has been reached regarding the most optimal surgical approach. Laparoscopic approach has the advantage of minimally invasive. The risk factors influencing perioperative complications of laparoscopic surgery are rarely discussed.

AIM

To investigate the risk factors for perioperative complications in laparoscopic surgeries of retrorectal cystic lesions.

METHODS

We retrospectively reviewed the medical records of patients who underwent laparoscopic excision of retrorectal cystic lesions between August 2012 and May 2020 at our hospital. All surgeries were performed in the general surgery department. Patients were divided into groups based on the lesion location and diameter. We analysed the risk factors like type 2 diabetes mellitus, hypertension, the history of abdominal surgery, previous treatment, clinical manifestation, operation duration, blood loss, perioperative complications, and readmission rate within 90 d retrospectively.

RESULTS

Severe perioperative complications occurred in seven patients. Prophylactic transverse colostomy was performed in four patients with suspected rectal injury. Two patients underwent puncture drainage due to postoperative pelvic infection. One patient underwent debridement in the operating room due to incision infection. The massive-lesion group had a significantly longer surgery duration, higher blood loss, higher incidence of perioperative complications, and higher readmission rate within 90 d (P < 0.05). Univariate analysis, multivariate analysis, and logistic regression showed that lesion diameter was an independent risk factor for the development of perioperative complications in patients who underwent laparoscopic excision of retrorectal cystic lesions.

CONCLUSION

The diameter of the lesion is an independent risk factor for perioperative complications in patients who undergo laparoscopic excision of retrorectal cystic lesions. The location of the lesion was not a determining factor of the surgical approach. Laparoscopic surgery is minimally invasive, high-resolution, and flexible, and its use in retrorectal cystic lesions is safe and feasible, also for lesions below the S3 level.

Surgical Management of Retrorectal Tumors: A French Multicentric Experience of 270 Consecutives Cases

OBJECTIVE

To report the largest multicentric experience on surgical management of retrorectal tumors (RRT).

SUMMARY BACKGROUND DATA

Literature data on RRT is limited. There is no consensus concerning the best surgical approach for the management of RRT.

METHODS

Patients operated for RRT in 18 academic French centers were retrospectively included (2000-2019).

RESULTS

270 patients were included. Surgery was performed through abdominal (n=72, 27%), bottom (n=190, 70%) or combined approach (n=8, 3%). Abdominal approach was laparoscopic in 53/72 (74%) and bottom approach was a Kraske modified procedures in 169/190 (89%) patients. In laparoscopic abdominal group, tumors were more frequently symptomatic (37/53, 70% vs 88/169, 52%, p=0.02), larger (mean diameter = 60.5 ± 24 (range, 13-107) vs 51 ± 26 (20-105) mm, p=0.02) and located above S3 vertebra (n=3/42, 7% vs 0, p=0.001) than those from Kraske modified group. Laparoscopy was associated with a higher risk of postoperative ileus (n=4/53, 7.5% vs 0%, p=0.002) and rectal fistula (n=3/53, 6% vs 0%, p=0.01) but less wound abscess (n=1/53, 2% vs 24/169, 14%, p=0.02) than Kraske modified procedures. RRT was malignant in 8%. After a mean follow up of 27 ±39 (1-221) months, local recurrence was noted in 8% of the patients. After surgery, chronic pain was observed in 17% of the patients without significant difference between the 2 groups (15/74, 20% vs 3/30, 10%; p=0.3).

CONCLUSIONS

Both laparoscopic and Kraske modified approaches can be used for surgical treatment of RRT (according to their location and their size), with similar long-term results.

Combined laparoscopic and posterior approach resection of large sacrococcygeal cystic teratoma

BACKGROUND

Teratoma is a true neoplasm and originates from the three germ cell layers and it can contain any tissue derived from these layers. The location of teratoma is variable according to the age group. In adults, sacrococcygeal teratoma is rare and carries a low risk of malignant transformation. Surgical resection is the mainstay of treatment and is challenging due to tumor location.

CASE PRESENTATION

We are presenting a case report of a 16-year old female referred to our hospital with recurrent attacks of urine retention. Imaging study showed a large sacrococcygeal tumor. It was successfully resected by a combined laparoscopic and posterior approach without any major complication.

CONCLUSION

The combined laparoscopic and posterior approach is a safe surgical technique for resection of the large sacrococcygeal tumor. This surgical method has been published around 10 times in separated reports around the world and for first time in our region.

Retrorectal tumors: Case report and review of literature

BACKGROUND

Retrorectal tumors are rare diseases and they can be challenging to diagnose and to manage. Usually they have a slow growth and they are asymptomatic. When present, symptoms depends on the dimensions of the tumor and their position. Inside the retrorectal space may develope a wide variety of benign and malignant masses.

CASE REPORT

A 70-years-old, obese, female patient was admitted to our hospital referring pelvic and lower-back pain for six months. The retrorectal mass was incidentally detected on imaging, and treated with a modified Kraske procedure.
Pathological examination revealed a rare retrorectal epidermoid cyst. We also reviewed the informations present in the scientific literature about the incidence, diagnosis and treatment options of retrorectal tumors.

CONCLUSIONS

Even though the rarity and heterogeneity of these tumors, we agree with literature that their surgical management is mandatory in order to achieve a definitive diagnosis and to avoid complications including malignant transformation. The surgical approach should be tailored for each patient and according to tumor's features.

Clinical management of 52 consecutive retro-rectal tumours treated at a tertiary referral centre

AIM

The aim of this single-institution study was to analyse the diagnostic methods, preoperative work-up and outcomes of 52 retro-rectal tumours.

METHOD

All patients treated for retro-rectal tumours from 2012 to 2017 were included.

RESULTS

Out of 52 patients, 40 (77%) were women. The median age of patients at the time of surgery was 43 (19-76) years, and 30 (58%) were asymptomatic at the time of diagnosis. All tumours were visible on magnetic resonance imaging (MRI) prior to surgery. The sensitivity and specificity for predicting malignancy on preoperative imaging for retro-rectal tumours were 25% and 98%, respectively. Forty-four procedures (85%) were performed using the perineal approach. The median hospital stay was 3 (1-18) days. There was no 30-day postoperative mortality. Eleven (21%) patients developed postoperative complications, mostly surgical site infections. Twenty-nine tumours (56%) were benign tailgut cysts. Four (8%) tumours were malignant and were considered to be removed with a tumour-free resection margin. Local recurrent disease was detected on MRI in 14 (27%) patients at a median of 1.05 (range 0.78-1.77) years after primary surgery. Only the multi-lobular shape of the tumour was found to be an independent risk factor for recurrence (P = 0.030).

CONCLUSION

A preoperative MRI is mandatory in order to plan the surgical strategy for retro-rectal tumours. Symptomatic, solid, large tumours should be removed because of the risk of malignancy. Minor cystic lesions with thin walls as well as asymptomatic recurrences of benign tumours are suitable to be followed conservatively.

Robotic approach to large tailgut cyst with malignant transformation: A case report

Introduction

Tailgut cysts (TGC) are rare congenital retrorectal lesions deriving from vestiges of the hindgut. The risk of malignant transformation is relatively high. Thus early diagnosis and a complete removal of the mass are of paramount importance. We present a case of successful robotic exeresis of a large TGC adenocarcinoma.

Presentation of case

A healthy 35-year-old woman was found to have a retrorectal TGC with suspected malignant transformation. The patient underwent complete robotic resection of the mass and pathology confirmed a TGC adenocarcinoma. The patient’s post-operative course was unremarkable. At 24 months, the patient has not experienced any recurrence nor complained functional disorders.

Discussion

The current case highlights the importance of TGC as a differential diagnosis of presacral masses, underscoring that malignant transformation can occur and may result in mortality and morbidity if radical surgery is not performed.

Diagnosing TGC adenocarcinoma can be challenging because of its relatively low incidence. Biopsy is not recommended while magnetic resonance imaging (MRI) is indispensable in the evaluation of this lesion as the presence of intracystic vegetations could indicate a malignant transformation.

Surgery is the mainstay of treatment and minimally invasive techniques have the potential to minimize morbidity and enhance recovery. Amongst these, the robotic approach can make the dissection of large lesions easier, reducing their manipulation and preventing nerve injuries.

Conclusion

Robot-assisted resection of a TGC adenocarcinoma is safe and feasible. This approach can be particularly useful in the pelvis providing acceptable functional and oncological outcomes.

Successful excision of a retrorectal cyst through trans-sacral approach: A case report

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Retrorectal cysts are rare congenital cystic lesions commonly seen in middle-aged women.

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A 38-year-old woman with retrorectal cyst underwent trans-sacral resection.

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She showed no postoperative complications.

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Trans-sacral resection provides adequate exposure of the posterior retrorectal cyst.

Introduction

Retrorectal cysts are rare congenital cystic lesions usually diagnosed in middle-aged women. They are generally asymptomatic; however, local pressure may result in complications. Pain or discomfort in the pelvic, sacral, lower back or perianal area are the most common symptoms. The diagnosis is difficult, and multidisciplinary management is required. An epidermoid cyst is the most common type. Surgical resection is the main treatment, and 3 operative approaches are commonly used: abdominal, trans-sacral, and combined abdominosacral. The selection of the approach depends on the nature and location of the lesion. Here, we present a case that demonstrates the trans-sacral approach to a retrorectal cyst is a feasible option in terms of safety and minimal invasiveness for selected patients with this rare type of retrorectal cystic lesion.

Presentation of case

A 38-year-old woman with no comorbidities incidentally showed a retrorectal cyst on magnetic resonance imaging performed during pregnancy. The patient underwent surgical resection under general anesthesia, trans-sacral incision was performed, the posterior rectum exposed, and the cyst removed. No complications were seen in the postoperative period.

Discussion

Posterior trans-sacral resection (Kraske) is preferred for patients with posterior retrorectal cyst because it provides adequate exposure.

Conclusion

Posterior trans-sacral resection allows proximal extension for elimination of the infection and in cases of adherence of the cyst to surrounding structures or in malignancy, which require en bloc resection.

Retrorectal Tumors in Adults: A 10-Year Retrospective Study

Due to the rarity and large diversity of the primary retrorectal tumors (RTs), the diagnoses are often difficult and they can be misdiagnosed. We present our experience in light of scarce information available on the clinical manifestations of RTs. The retrospective study included 17 patients diagnosed as RTs between January 2004 and January 2014. Demographic characteristics, length of symptoms, clinical findings, diagnostic methods, evaluations on the treatment procedures and postoperative periods, pathology, complications, and length of hospital stay were recorded. A mean of 1.7 of patients were diagnosed with RTs annually in our hospital. Patients comprised 12 females and 5 males. Pain and discomfort were the most common symptoms at presentation. All the lesions were evaluated by using magnetic resonance imaging (MRI) and computed tomography (CT), and all the patients were treated operatively. Based on the preoperative MRI or CT findings, an anterior approach was performed in 7 patients, a posterior approach in 6 patients, and combined approach in 4 patients. Mean size of tumors was 9.2 ± 4.3 cm. Epidermoid cyst (n = 8) was the most common tumor. Except for 1 case of liposarcoma, 16 tumors were confirmed to be of benign nature in histologic examination. Mean length of hospital stay 12.4 ± 6.8 days. Retrorectal tumors are heterogeneous and lead to diagnostic difficulties. A high index of clinical suspicion is needed for diagnosis. Preoperative imaging may be helpful in determining the course of treatment. Total excision of a retrorectal tumor may alleviate pressure symptoms and confirm the diagnosis.

A systematic review of minimally invasive surgery for retrorectal tumors

Retrorectal tumors are rare tumors that require resection for symptoms, malignancy and potential malignant transformation. Traditional approaches have included laparotomy, perineal excision or a combination. Multiple minimally invasive techniques are available which have the potential to minimize morbidity and enhance recovery. We performed a systematic review of the literature to determine the feasibility and surgical outcomes of retrorectal tumors approached using minimally invasive surgical techniques. Publications in which adult patients (≥ 18 years) had a minimally invasive approach (laparoscopic or robotic) for resection of a primary retrorectal tumor were included. Data were collected on approach, preoperative investigation, size and sacral level of the tumor, operating time, length of stay, perioperative complications, margins and recurrence. Thirty-five articles which included a total of 82 patients met the inclusion criteria. The majority of patients were female (n = 65; 79.2%), with a mean age of 41.7 years (range 18-89 years). Seventy-three patients (89.0%) underwent laparoscopic or combined laparoscopic-perineal resection, and 9 (10.8%) had a robotic approach. The conversion rate was 5.5%. The overall 30-day morbidity rate was 15.7%, including 1 intraoperative rectal injury (1.2%). Ninety-five percent (n = 78) of the retrorectal tumors were benign. Median length of stay was 4 days for both laparoscopic and robotic groups, with ranges of 1-8 and 2-10 days, respectively. No tumor recurrence was noted during follow-up [median 28 months (range 5-71 months)]. A minimally invasive approach for the resection of retrorectal tumors is feasible in selected patients. Careful patient selection is necessary to avoid incomplete resection and higher morbidity than traditional approaches.

Progress in the management of retrorectal tumours

AIM

Tumours in the retrorectal space are rare and pathologically heterogeneous. The roles of imaging and preoperative biopsy, nonoperative management and the indications for surgical resection are controversial. This study investigated a series of retrorectal tumours treated in a single institution with the aim of producing a modern improved management algorithm.

METHOD

A retrospective analysis was conducted of the management of all retrorectal lesions identified between 1998 and 2013 from a radiology database search. Patient demographics, presenting symptoms, imaging, biopsy, management and the results were recorded. Descriptive statistics were used and Kaplan-Meier survival analysis was performed.

RESULTS

Sixty-nine patients with a confirmed retrorectal tumour were identified. The median age was 50 (36-67 interquartile range) and 42 (56%) were female. Twenty (29%) of the tumours were malignant: 4 of 41 cystic lesions were malignant (12.9%) vs. 16 of 28 solid (or heterogeneous) lesions (57.1%) (P < 0.0001). Imaging demonstrated a 95% sensitivity and 64% specificity for differentiating benign from malignant tumours. Magnetic resonance imaging (MRI) was significantly better at distinguishing between benign and malignant tumours than computed tomography (94% vs. 64%, P = 0.03). Percutaneous biopsy was performed in 16 patients and only 27 underwent resection. There was no evidence of local recurrence associated with biopsy. Solid lesions were associated with a nonsignificant decreased overall survival (P = 0.348).

CONCLUSION

This study demonstrated that MRI should be the investigation of choice for retrorectal lesions. Biopsy of solid lesions is safe and useful for guiding neoadjuvant and surgical therapy. Cystic lesions without suspicious radiological features can be followed by serial imaging without resection.

Management approach and surgical strategies for retrorectal tumours: a systematic review

AIM

The management strategy for retrorectal tumours is complex. Due to their rarity, few surgeons have expertise in management.

METHOD

A systematic literature review was conducted using the PubMed database. English language publications in the years 2011-2015 that assessed preoperative management, surgical strategies and chemoradiotherapy for presacral tumours were included. Two hundred and fifty-one abstracts were screened of which 88 met the inclusion criteria. After review of the full text, this resulted in a final list of 42 studies eligible for review.

RESULTS

In all, 932 patients (63.2% female, 36.8% male; P < 0.01) with a retrorectal tumour were identified. Most were benign (65.9% vs. 33.7%, P < 0.01). Imaging distinguished benign from malignant lesions in 88.1% of cases; preoperative biopsy was superior to imaging in providing an accurate definitive diagnosis (91.3% vs. 61.4%, P < 0.05) with negligible seeding risk. Biopsy should be performed in solid tumours. It is useful in guiding neoadjuvant therapy for gastrointestinal stromal tumours, sarcomas and desmoid type fibromatosis and may alter the management strategy in cases of diffuse large B-cell lymphoma and metastases. Biopsies for cystic lesions are not recommended. The gold standard in imaging is MRI. The posterior Kraske procedure is the most common surgical approach. Overall, the reported recurrence rate was 19.7%.

CONCLUSION

This review evaluated the management strategies for retrorectal tumours. A preoperative biopsy should be performed for solid tumours. MRI is the most useful imaging modality. Surgery is the mainstay of treatment. There is limited information on robotic surgery, single-port surgery, transanal endoscopic microsurgery, chemoradiotherapy and reconstruction.

Transitional cell carcinoma arising in a tailgut cyst

Malignant transformation in tailgut cysts (TGCs) is extremely rare, with no reports of transitional cell carcinoma arising in them in the UK literature. Here, we discuss a case of a patient with a malignant TGC encapsulating the rectum. This case report highlights the pathological and diagnostic considerations and discusses its management.

Transsacrococcygeal Approach for Resection of Retrorectal Tumors

Retrorectal tumors, are a rare and interesting entity, traditionally managed with surgery. The surgical approach is a key to get an easy and safe access. The purpose of this study was to evaluate the results of resection by a transsacrococcygeal approach. Thirty-six patients had retrorectal tumors resected by a transsacrococcygeal approach in our department. All the tumors were en bloc resected, irrespective of size and anatomical depth. The clinic data were retrospectively reviewed. Tumor mean size was 10 ± 4.4 cm. In 16 cases, tumors were 10 cm or more in size. The largest tumor measured 20 cm. The estimated mean blood loss was 130 ml. No mortality and severe postoperative complications were observed. The most significant issues were wound infection and delayed healing. Pathology showed 15 cases of epidermal cysts, two cases of enterogenous cyst, one case of bronchogenic cyst, 12cases of teratoma, two cases of schwannoma, two cases of low-grade malignant fibrous myxoma, one case of aggressive angiomyxoma, one case of desmoid tumor. The trans-sacrococcygeal approach gives an easy access and good visualization with fewer complications. This surgical approach shows to be safe and effective for resection of retrorectal tumors.