Transvaginal local excision of rectal carcinoma

Successful resection of a rectal gastrointestinal stromal tumor using a transperineal approach: a case report

BACKGROUND

Rectal gastrointestinal stromal tumors (GISTs) complicate surgical approaches because of their anatomical position. We herein report a patient with rectal GIST on the anterior wall of the lower rectum, hat was successfully resected using a transperineal approach.

CASE PRESENTATION

This report describes a unique case of a 73-year-old man who was diagnosed with rectal GIST on the anterior wall of the lower rectum. The tumor was located within 3 cm of the anal verge, a location that would require highly invasive surgery. A transperineal approach was planned to preserve the anal function. Under general anesthesia, the patient was placed in a lithotomy position and a Mercedes-Benz incision was made in the perineum. Excision of the tumor was performed. The post-operative course was uneventful, and the patient remained free from recurrence.

CONCLUSION

This case highlights the importance of performing minimally invasive and safe surgery. With some surgical refinements, a transperineal approach may be an option for surgical procedures in patients with rectal GIST on the anterior wall of the lower rectum.

Transvaginal resection of a gastrointestinal stromal tumor of the rectum: a case report

BACKGROUND

The most common curative treatment for gastrointestinal stromal tumors (GISTs) is local excision. For rectal GISTs, however, local excision is difficult because of the anatomical features of the rectum. The optimal surgical approach is still under debate, and less invasive methods are desired. We herein report a case of transvaginal resection of a rectal GIST in a young woman.

CASE PRESENTATION

A 21-year-old woman was diagnosed with a resectable GIST in the anterior rectal wall and underwent transvaginal tumor resection. The posterior vaginal wall was incised, revealing the tumor fully covered by the rectal mucosa. The rectal adventitia and muscular layer were incised, and the tumor was resected en bloc without rupture. The postoperative course was favorable, and the patient was discharged on postoperative day 12. No findings consistent with recurrence were present 6 months postoperatively.

CONCLUSION

Transvaginal tumor resection is a treatment option as a minimally invasive procedure for GISTs in the anterior rectal wall in female patients.

Transvaginal resection of a rectal leiomyoma: A case report

The present study reports the case of a patient with a rectal submucosal tumor (leiomyoma) that was resected transvaginally. A 51-year-old female presented with a rectal submucosal tumor on the anterior wall of the lower rectum, located within 3 cm of the anal verge. This location would normally require intersphincteric or abdominal perineal resection. However, in order to minimize the invasiveness of the treatment and reduce post-operative morbidity, transvaginal resection and laparoscopic diverting ileostomy were performed instead. With the patient under general anesthesia, the posterior vaginal mucosa was incised vertically. The tumor was then excised en bloc with the overlying rectovaginal septum and rectal submucosal tumor. A primary repair of the defect and a diverting stoma were performed. The procedure did not present any complications, and the patient was discharged on day 10 post-surgery. The diverting stoma was closed 3 months later, and the sphincter function of the patient following surgery was monitored by manometry. The results of the manometric tests indicated that the patient did not suffer from fecal incontinence. In addition, the patient did not experience anal dysfunction or discomfort following the surgical procedure.

Transsacral excision with pre-operative imatinib mesylate treatment and approach for gastrointestinal stromal tumors in the rectum: A report of two cases

Gastrointestinal stromal tumors (GISTs) are rare in the rectum. Radical surgery, such as an abdominoperineal resection, is necessary for large rectal GISTs, which can result in the loss of function of involved organs. Imatinib mesylate can be used as perioperative therapy and may reduce tumor size, and it is now approved for use in the adjuvant therapy of locally resected anorectal GISTs. The present study describes two cases of large rectal GISTs, for which abdominoperineal resections were initially planned. The two patients received pre-operative imatinib mesylate treatment, and the therapeutic response was assessed by magnetic resonance imaging. Finally, transsacral local resection was successfully performed for these two GISTs. A macroscopically complete resection was achieved, and microscopically, the resection margin was negative. One patient experienced the complication of rectal leakage, which was successfully managed by drainage. No recurrence occurred in the two patients after more than two years. Pre-operative imatinib mesylate therapy with subsequent transsacral local resection for selected rectal GISTs is a feasible treatment modality and can prevent extended surgery.

The indication and surgical results of local excision following radiotherapy for low rectal cancer

AIM

Radical surgery of rectal cancer is associated with significant morbidity, and some patients with low-lying lesions must accept a permanent colostomy. The objective of this study was to evaluate the outcome of local excision followed by adjuvant radiotherapy for rectal cancer for curative purposes.

METHOD

One hundred and seven patients with rectal carcinoma performed with local excision were analysed retrospectively.

RESULTS

The procedures of local excision were trans-anal resection in 83 patients, trans-sacral resection in 16, trans-sphincteric local resection in five, and trans-vaginal resection in three. The overall disease-free survival rate was 80.4% (86/107), including 90.0% (54/60) for T1 and 72.3% (34/47) for T2 tumours, respectively. Eighty-two of 107 patients underwent adjuvant postoperative radiotherapy after local excision, and 25 did not, and the DFS rates between radiation and nonradiation group were significantly different for T2 [81.6% (31/38) vs 33.3% (3/9), P < 0.05], but not for T1 tumours (90.9%vs 87.5%, P > 0.05). The rates of local recurrence and distant metastasis were 13.1% (14/107) and 4.7% (5/106), respectively, and the median time to relapse was 15 months (range: 10-53) for local recurrence and 30 months (21-65) for distant recurrence. The risk factors for local recurrence were large tumour (≥3 cm), poorly differentiated adenocarcinoma and T2 tumour.

CONCLUSIONS

Local excision followed adjuvant radiotherapy is an alternative and feasible technique for small T1 rectal cancer in selected cases.

Transvaginal excision of a large rectal stromal tumor: an alternative

BACKGROUND

Gastrointestinal stromal tumors (GISTs), the specific kit-positive mesenchymal tumors of the gastrointestinal tract, are rarely found in the anorectum and account for only 0.1% of all colorectal tumors. The main stem of therapy remains surgical excision. The standard surgical approach for anorectal GISTs includes transanal resection or enucleation for smaller and anterior or abdominoperineal resection for larger tumors.

METHODS

We present an alternative, transvaginal approach for a local excision of a large rectal GIST. In our case, a 5 x 5 x 8 cm large GIST located 3 cm above the dentate line in the anterior rectal wall was removed through the vagina.

RESULTS

In our experience, this approach enables a safe alternative even for larger tumors in the anterior rectal wall with a very low morbidity, sparing the patient from an unnecessary abdominoperineal resection.