Primary Appendiceal Adenocarcinoma Presenting with Hematochezia due to the Invading Tumor in the Sigmoid Colon.

Primary appendiceal tumors are rare malignancies; some cases have been described to invade other organs, and this represents a very rare clinical condition. We report a case of appendiceal adenocarcinoma invading the sigmoid colon and a review of similar cases. A 69-year-old woman with complaints of hematochezia was admitted to the hospital. Colonoscopy revealed a tumor in the sigmoid colon, which was a well-differentiated tubular adenocarcinoma. A computed tomography scan showed an appendiceal mass that involved the sigmoid colon, suggesting an appendiceal cancer invading the sigmoid colon. Ileocecal resection with extended lymphadenectomy and en bloc resection of the sigmoid colon was performed. The appendiceal tumor involved the sigmoid colon and the terminal ileum. The ileocecal part which included the tumor and the involved sigmoid colon was resected in total. Macroscopic findings showed that the appendiceal tumor made a fistula with the sigmoid colon. Pathological examination revealed that the tumor was a well-differentiated tubular adenocarcinoma that invaded the sigmoid colon. The final pathological stage was T4bN0M0, stage IIC. The patient was discharged from the hospital uneventfully. She was alive without relapse after a 20-month follow-up. Although an appendiceal tumor invading the rectosigmoid region is rare, a preoperative diagnosis can be obtained that facilitates the planning of a suitable surgical procedure: en bloc resection of the ileocecal part and the rectosigmoid part.

A case of rapid diagnosis of Boerhaave syndrome by thoracic drainage.

BACKGROUND: Boerhaave syndrome is a rare and often fatal syndrome. Delayed diagnosis and treatment is closely associated with prolonged morbidity and increased mortality. In general, esophagography is usually chosen as the diagnostic procedure, but it has a relatively high false-negative rate. There are no reports, to our knowledge, regarding the efficacy of thoracic drainage, although it is easier to perform and more immediate than esophagography in the emergency department. OBJECTIVES: To report the efficacy of thoracic drainage for rapid diagnosis and treatment of Boerhaave syndrome. CASE REPORT: An 80-year-old woman was admitted with vomiting and sudden onset of postprandial chest pain radiating to the back. Initially, myocardial infarction or aortic dissection was suspected, but was excluded by point-of-care tests and computed tomography (CT) scan, which revealed a left-sided pneumothorax, heterogeneous left pleural effusion, and pneumomediastinum at the lower level of the esophagus. Boerhaave syndrome was suspected and confirmed by thoracic drainage, which drained off bloody fluid and residual food such as broccoli. Emergency thoracotomy was performed within 4 h after onset of symptoms. The patient made an uneventful recovery. CONCLUSION: Findings in this case indicate that chest pain, left-sided massive effusion on chest radiography, and left-sided massive heterogeneous effusion on CT scan are important for the diagnosis of Boerhaave syndrome. Subsequent thoracic drainage is useful for confirming Boerhaave syndrome, and such a strategy might lead to a good prognosis for patients with this rare but critical disease.

Prosthetic repair of an incarcerated groin hernia with small intestinal resection.

PURPOSE: No consensus has been reached on the use of prostheses in a potentially infected operating field. In this study, we evaluated the validity of a mesh prosthesis for the repair of incarcerated groin hernias with intestinal resection. METHODS: Twenty-seven patients underwent operations for correction of incarcerated groin hernias with small intestinal resection at our hospital between January 2000 and March 2010. The patients were divided into two groups: those who underwent repair with a prosthetic mesh and those who underwent primary hernia repair. Patients with intestinal perforations, abscess formations, panperitonitis, and those who required colon resections were excluded. The length of the operation, blood loss, and incidences of surgical site infection, postoperative ileus, and recurrence were evaluated in each group. RESULTS: Of the 27 patients studied, 10 (37%) underwent tension-free repair with a mesh, and 17 (63%) underwent primary hernia repair. Although the patients who underwent primary hernia repair were significantly older than the patients who underwent mesh repair (P = 0.015), no statistically significant differences in morbidity, including surgical site infection, or mortality, were identified. CONCLUSION: Strangulated inguinal hernias cannot be considered a contraindication to the use of a prosthetic mesh even in cases requiring small-intestinal resection.

Real-time PCR-based analysis of the human bile microRNAome identifies miR-9 as a potential diagnostic biomarker for biliary tract cancer.

Biliary tract cancer (BTC) is often difficult to diagnose definitively, even through histological examination. MicroRNAs (miRNAs) regulate a variety of physiological processes. In recent years, it has been suggested that profiles for circulating miRNAs, as well as those for tissue miRNAs, have the potential to be used as diagnostic biomarkers for cancer. The aim of this study was to confirm the existence of miRNAs in human bile and to assess their potential as clinical biomarkers for BTC. We sampled bile from patients who underwent biliary drainage for biliary diseases such as BTC and choledocholithiasis. PCR-based miRNA detection and miRNA cloning were performed to identify bile miRNAs. Using high-throughput real-time PCR-based miRNA microarrays, the expression profiles of 667 miRNAs were compared in patients with malignant disease (n = 9) and age-matched patients with the benign disease choledocholithiasis (n = 9). We subsequently characterized bile miRNAs in terms of stability and localization. Through cloning and using PCR methods, we confirmed that miRNAs exist in bile. Differential analysis of bile miRNAs demonstrated that 10 of the 667 miRNAs were significantly more highly expressed in the malignant group than in the benign group at P<0.0005. Setting the specificity threshold to 100% showed that some miRNAs (miR-9, miR-302c*, miR-199a-3p and miR-222*) had a sensitivity level of 88.9%, and receiver-operating characteristic analysis demonstrated that miR-9 and miR-145* could be useful diagnostic markers for BTC. Moreover, we verified the long-term stability of miRNAs in bile, a characteristic that makes them suitable for diagnostic use in clinical settings. We also confirmed that bile miRNAs are localized to the malignant/benign biliary epithelia. These findings suggest that bile miRNAs could be informative biomarkers for hepatobiliary disease and that some miRNAs, particularly miR-9, may be helpful in the diagnosis and clinical management of BTC.

Sequencing and bioinformatics-based analyses of the microRNA transcriptome in hepatitis B-related hepatocellular carcinoma.

MicroRNAs (miRNAs) participate in crucial biological processes, and it is now evident that miRNA alterations are involved in the progression of human cancers. Recent studies on miRNA profiling performed with cloning suggest that sequencing is useful for the detection of novel miRNAs, modifications, and precise compositions and that miRNA expression levels calculated by clone count are reproducible. Here we focus on sequencing of miRNA to obtain a comprehensive profile and characterization of these transcriptomes as they relate to human liver. Sequencing using 454 sequencing and conventional cloning from 22 pair of HCC and adjacent normal liver (ANL) and 3 HCC cell lines identified reliable reads of more than 314000 miRNAs from HCC and more than 268000 from ANL for registered human miRNAs. Computational bioinformatics identified 7 novel miRNAs with high conservation, 15 novel opposite miRNAs, and 3 novel antisense miRNAs. Moreover sequencing can detect miRNA modifications including adenosine-to-inosine editing in miR-376 families. Expression profiling using clone count analysis was used to identify miRNAs that are expressed aberrantly in liver cancer including miR-122, miR-21, and miR-34a. Furthermore, sequencing-based miRNA clustering, but not individual miRNA, detects high risk patients who have high potentials for early tumor recurrence after liver surgery (P = 0.006), and which is the only significant variable among pathological and clinical and variables (P = 0,022). We believe that the combination of sequencing and bioinformatics will accelerate the discovery of novel miRNAs and biomarkers involved in human liver cancer.

Successful treatment of a spontaneous esophageal rupture in an elderly patient: a case report.

An 80-year-old woman was admitted to our hospital with severe chest and back pains after vomiting. Computed tomography (CT) of the chest revealed left-sided pneumothorax and pleural effusion. Some food was drained from an inserted chest tube, and we diagnosed spontaneous esophageal rupture (Boerhaave's syndrome). A left thoracotomy was performed 7 hours after the onset of symptoms. A 3-cm perforation was discovered in the lateral wall of the distal esophagus. The perforation was repaired with a primary two-layered closure and covered with pericardial fat. The patient had a good postoperative course and was discharged 1 month after surgery. This case suggests the importance of early surgical treatment, even in elderly patients with spontaneous esophageal rupture.