Sigmoid colon schwannoma is a rare benign gastrointestinal tumor that is challenging to be diagnosed preoperatively.This paper reported a case of sigmoid colon schwannoma that was preoperatively misdiagnosed as a gastrointestinal stromal tumor on ultrasonography.Intraoperative frozen section analysis identified it as a spindle cell tumor,with definitive diagnosis confirmed as gastrointestinal schwannoma via immunohistochemistry.This paper summarizes the similarities and differentiating features of intestinal stromal tumors and schwannomas on ultrasonographic imaging.By analyzing and discussing previous literature,we aim to enhance the diagnostic and differential diagnostic capabilities of ultrasonographers in preoperative evaluation of intestinal schwannomas,thereby providing reliable evidence for clinicians in the diagnosis and management of this condition.
Humans ; Neurilemmoma/diagnostic imaging* ; Ultrasonography ; Sigmoid Neoplasms/diagnostic imaging* ; Male ; Colon, Sigmoid/diagnostic imaging* ; Middle Aged ; Female ; Diagnosis, Differential

Humans ; Accidents, Traffic ; Colon, Sigmoid ; Forensic Medicine ; Autopsy ; Abdominal Injuries ; Thoracic Injuries ; Rupture

Humans ; Colon, Sigmoid ; Hamartoma/surgery* ; Schwann Cells ; Mucous Membrane

Colon, Sigmoid/surgery* ; Colostomy ; Humans ; Ostomy ; Prolapse ; Surgical Stomas

Anastomosis, Surgical ; Colon, Sigmoid/surgery* ; Colorectal Neoplasms/surgery* ; Humans ; Robotics

We reported a case of irreducible indirect inguinal hernia caused by sigmoid colon cancer entering the right groin.The patient complained about a right groin mass for more than 60 years with progressive enlargement for 3 years and pain for half a month.Abdominal CT examination at admission showed rectum and sigmoid colon hernia in the right inguinal area and thickening of sigmoid colon wall.Electronic colonoscopy and pathological diagnosis showed sigmoid colon cancer.Therefore,the result of preliminary diagnosis was irreducible indirect inguinal hernia caused by sigmoid colon cancer entering the right groin.We converted laparoscopic exploration to laparotomy followed by radical sigmoidectomy and employed end-to-end anastomosis of descending colon and rectum in combination with repair of right inguinal hernia.The patient recovered well after operation and was discharged.
Colon, Sigmoid/surgery* ; Groin ; Hernia, Inguinal/surgery* ; Humans ; Laparoscopy ; Sigmoid Neoplasms/surgery*

PURPOSE: The Oral-anal Transit Test (OTT) is a simple method of obtaining information about colonic transit. We aim to assess the correlation of OTT with the neuromuscular integrity of the colon determined by colonic manometry (CM).METHODS: All patients who had OTT followed by CM were evaluated. Less than 6 of 24 markers remaining on OTT was considered normal. CM was performed per previously published guidelines. A normal CM was defined as at least one High Amplitude Propagating Contraction progressing from the most proximal sensor through the sigmoid colon.RESULTS: A total of 34 patients underwent both OTT and CM (44% male, age 4–18 years, mean 11.5 years, 97% functional constipation +/− soiling, Hirschsprung's Disease). Of normal and abnormal OTT patients, 85.7% (6/7) and 18.5% (5/27) respectively had normal CM. When all markers progressed to at least the sigmoid colon, this was 100% predictive against colonic inertia. Greater than 50% of patients with manometric isolated sigmoid dysfunction had markers proximal to the recto-sigmoid.CONCLUSION: OTT and CM are both valuable studies that assess different aspects of colonic function. OTT can be used as a screening test to rule out colonic inertia. However, the most proximal extent of remaining markers does not predict the anatomical extent of the manometric abnormality, particularly in isolated sigmoid dysfunction.
Child ; Colon ; Colon, Sigmoid ; Constipation ; Fecal Incontinence ; Humans ; Male ; Manometry ; Mass Screening ; Methods ; Soil

PURPOSE: We assessed the oncologic and anastomotic benefits of low ligation of the inferior mesenteric artery (IMA) with additional lymph node (LN) retrieval. METHODS: We performed a retrospective case-control study between January 2011 and July 2015. All patients underwent curative resection of a primary sigmoid or rectal tumor. We excluded patients with distant metastases at the time of diagnosis. The case group included patients who underwent high ligation of the IMA (high group, HG). The control group included patients who underwent low ligation of the IMA with low group with additional LN retrieval (LGAL). Controls were identified by matching patients based on age (±5 years), sex, tumor location, and final histopathological stage. Finally, each group included 97 patients. RESULTS: Clinical characteristics did not significantly differ between groups. The mean number of additional harvested LN was 2.19 (range, 0–11), and one patient in the LGAL had a metastatic LN among the additional harvested LN. The overall morbidity was 22.7% in the HG and 30% in the LGAL (P = 0.257). Anastomotic leakage occurred in 14 patients (14.4%) in the HG and 5 patients (5.2%) in the LGAL (P = 0.030). The mean disease-free survival time in the HG was longer than that in the LGAL (P = 0.008). The mean overall survival (OS) time was 70.4 ± 1.3 months. The mean OS was 63.7 ± 1.6 months in the HG and 69.1 ± 2.6 months in the LGAL (P = 0.386). CONCLUSION: Low ligation of the IMA with additional LN retrieval is technically safe. However, the oncologic effect was better after high ligation of IMA.
Anastomotic Leak ; Case-Control Studies ; Colon, Sigmoid ; Colorectal Neoplasms ; Diagnosis ; Disease-Free Survival ; Humans ; Ligation ; Lymph Nodes ; Mesenteric Artery, Inferior ; Neoplasm Metastasis ; Rectal Neoplasms ; Retrospective Studies

In past decades, hepatic portal venous gas (HPVG) has rarely been reported, and the mortality rate has been very high. In most cases, surgical intervention was needed. Presently, abdominal computed tomography can be conveniently used to diagnose HPVG, which has various underlying causes and benign courses. We present the case of a patient with HPVG due to anastomosis leakage after a sigmoidectomy for diverticulitis; the patient was cured with conservative management.
Colon, Sigmoid ; Diverticulitis ; Humans ; Mortality

PURPOSE: Bevacizumab has been used as a promising drug for metastatic colorectal cancer in combination with chemotherapeutic agents. However, it has a few serious adverse effects, such as intestinal bleeding or perforation. The purpose of this study is to identify the clinical characteristics of intestinal perforation induced by bevacizumab in colorectal cancer patients.METHODS: From January 2007 to June 2018, a total of 488 patients underwent chemotherapy with bevacizumab for metastatic colorectal cancer. Medical records were reviewed retrospectively.RESULTS: Nine patients (1.8%) were identified with intestinal perforation induced with bevacizumab. The median age was 59 years (range, 36–68 years). The primary tumor site was the sigmoid colon in six patients, the rectum in three patients. The liver was the most common metastatic organ (7 patients). Perforation sites were primary tumor site of the colorectum in four patients and the small bowel in five patients. Intestinal perforation was developed after a median of 3 chemotherapy cycles (range, 1–15 cycles), and a median of 7 days (range, 3–32 days) after chemotherapy. One patient expired due to sepsis.CONCLUSION: Bevacizumab induced intestinal perforation is a lethal adverse effect in patients with colorectal cancers. The characteristics of intestinal perforation varied according to perforation site, previous chemotherapy cycles, and clinical course. Careful monitoring is necessary with the use of bevacizumab in conjunction with chemotherapeutic agents.
Bevacizumab ; Colon, Sigmoid ; Colorectal Neoplasms ; Drug Therapy ; Hemorrhage ; Humans ; Intestinal Perforation ; Liver ; Medical Records ; Rectum ; Retrospective Studies ; Sepsis