Splenic epithelial cyst mistaken with Hydatid cyst: A case report.

INTRODUCTION: Cystic lesions of the spleen are infrequent and usually diagnosed incidentally. These lesions are rare and their differential diagnosis is very wide. Splenic epithelial cysts are the most common type of primary splenic cyst (4%). Surgical treatment is indicated for cysts larger than 5 cm or symptomatic. Nowadays, spleen preserving surgery is the gold standard treatment considering the immunologic role of the spleen and the increased risk of post-splenectomy infections. CASE PRESENTATION: A 17 year old girl presented to the outpatient clinic with moderate left upper quadrant abdominal pain of 2 weeks duration with loss of appetite and denied fever, chills, sweating and jaundice. Abdominal examination showed tender splenomegaly. The abdominal imaging (Ultrasound, CT SCAN, MRI) was suggestive of hydatid cyst of the spleen, for which she received Albendazole for 1 month and then operated by laparotomy with partial resection and un-roofing of the splenic cyst. The pathology report showed a splenic epithelial cyst (SEC). CONCLUSION: SEC is a rare pathology that could mimic splenic hydatid cyst. The clinical and radiological pictures may be commonly misleading and non-conclusive. Definitive diagnosis is made on histopathology. Spleen conserving surgery, when possible, is the preferred modality for treatment.

Complications of mesh repair in hiatal surgery: about 3 cases and review of the literature.

Primary repair of large hiatal hernia is associated with high recurrence rate. The use of prosthetic mesh to reinforce the cure seems to lead to less recurrence. Unfortunately, this procedure is still controversial in regard of the possible complications that may occur. We report here 3 cases of complications related to mesh placement in hiatal hernia surgery: an esophageal perforation, an intragastric migration, and a fundic erosion. When a patient complains of epigastric pain or dysphagia with no peritoneal signs, in the postoperative course of mesh placement, an upper endoscopy should be achieved to rule out those complications. The patient must be informed about the mesh placement and he must notify the endoscopist in case of an upper gastrointestinal endoscopy.

Anatomic significance of a positive barium enema in deep infiltrating endometriosis of the large bowel.

PURPOSE: The anatomopathological significance of a positive double-contrast barium enema (DCBE) for suspicion of deep infiltrating endometriosis of the large bowel was studied. This is a retrospective study of a prospective database. METHODS: A large-bowel resection was proposed for patients who were suspicious for large-bowel endometriosis and had a positive DCBE. In a series of 73 patients, 71 large-bowel resections were performed. Histology and immunohistochemistry with the monoclonal antibody CD-10 were performed on the resection specimen. Outcome measures were the length of the resected specimen, the largest diameter of the lesion, the positivity of the resection margins, and the degree of infiltration of the large bowel. We also compared the mean largest diameters of the lesions with the degree of infiltration of the large bowel. RESULTS: Between December 1997 and October 2005, 80 patients were suspicious for large-bowel endometriosis: 73 (91%) had positive DCBEs, and 7 (9%) had negative DCBEs. Of the 73 with positive DCBEs, 4 (5%) refused digestive resection and 1 (1.4%) was excluded. Three patients underwent two large-bowel resections because of the presence of bifocal lesions (left and right colon). A total of 71 resections were performed. In case of positive DCBE, the perivisceral fat and the whole muscularis were infiltrated in 100% of cases. The infiltration reached the submucosa and the mucosa respectively in 82% and 18% of cases. A total of 9.9% of resection margins were positive at histology but only focally. The mean largest diameter of the lesions infiltrating the whole thickness of the large bowel was not statistically different from the mean largest diameter of more superficial lesions. CONCLUSIONS: Findings of mass effect with indentations and ridging of the mucosa on DCBE in a setting suspicious for large-bowel endometriosis correspond well with pathologic findings of deep infiltration of the large-bowel wall. Clinicians dealing with deep infiltrating endometriosis should be aware of these findings, which could influence their choice of surgical treatment.

Comparison of US and unenhanced multi-detector row CT in patients suspected of having acute appendicitis.

PURPOSE: To prospectively compare the diagnostic performance of ultrasonography (US) and unenhanced multi-detector row computed tomography (CT) in patients suspected of having acute appendicitis by using surgery or clinical follow-up as the reference standard. MATERIALS AND METHODS: The institutional review board approved the research protocol. Written informed consent was obtained from all patients or, for those who were adolescents, from their parents. Ninety-four patients (59 female and 35 male patients) aged 16-81 years (mean, 38 years) who were suspected of having acute appendicitis underwent both US and unenhanced multi-detector row CT of the entire abdomen. The examinations were performed within 1-2 hours of each other. US and CT images were obtained and prospectively interpreted by a different radiologist from a group of abdominal radiologists or a group of residents and general radiologists. Radiologists proposed an overall diagnosis and an alternative diagnosis. Data from US and CT were compared, and the definite diagnosis was established with surgical findings (n = 40) or results of clinical follow-up (n = 54) as the reference standard. Comparisons were made for each group of radiologists and the patient's age, body mass index (BMI), and sex. Proportion comparisons were made by using the Pearson chi2 test or the Fisher exact test. Continuous variables were compared between groups with the Mann-Whitney U test. RESULTS: Thirty patients had definite appendicitis. The sensitivity, specificity, positive and negative predictive values, and accuracy were not significantly different between US and CT or between groups of radiologists (P values ranged from .389 to >.99), regardless of the patient's BMI (P values ranged from .073 to >.99). Misclassifications were compared with the definite alternative diagnosis and were not significantly different between US and CT or between groups of radiologists (P = .061-.592), regardless of patient age (P = .875) or sex (P = .151 and >.99 for male and female patients, respectively). The frequency of inconclusive examinations, however, was significantly higher with US than with CT, regardless of radiologist experience (P = .020 and <.001, respectively). CONCLUSION: Although the diagnostic performances of US and multi-detector row CT are comparable, more inconclusive images were obtained with US.

Computed tomography and magnetic resonance imaging in the assessment of acute pancreatitis.

BACKGROUND & AIMS: This study aimed to compare the accuracy of magnetic resonance imaging (MRI) with computed tomography (CT) in assessing acute pancreatitis (AP) and to explore the correlation between MRI findings and clinical outcome. METHODS: Patients with AP were investigated by contrast-enhanced CT and MRI on admission and 7 and 30 days thereafter. MRI was performed with intravenous secretin and contrast medium. Balthazar's grading system was used to measure CT and MRI severity indices (CTSI and MRSI, respectively). RESULTS: Thirty-nine patients (median age, 47 years; range, 15-86) were studied. AP was of biliary etiology in 19 patients (49%). On admission, AP was assessed clinically as severe in 7 patients (18%). A strong correlation was demonstrated between CTSI and MRSI on admission and 7 days later. MRSI on admission correlated with the following: the Ranson score, C-reactive protein levels 48 hours after admission, duration of hospitalization, and clinical outcome regarding morbidity, including local and systemic complications. Considering the Ranson score as the gold standard, MRI detected severe AP with 83% (58-96, 95% CI) sensitivity, 91% (68-98) specificity vs. 78% (52-93) and 86% (63-96) for CT. Magnetic resonance cholangiopancreatography after i.v. secretin injection showed pancreatic duct leakage in 3 patients (8%). CONCLUSIONS: MRI is a reliable method of staging AP severity, has predictive value for the prognosis of the disease, and has fewer contraindications than CT. It can also detect pancreatic duct disruption, which may occur early in the course of AP.