Background/Aims: Recent studies suggested a favorable effect of indigo naturalis (IN) in inducing remission for refractory ulcerative colitis (UC), however, the maintenance effect of IN for patients with UC remains unknown. Therefore, we conducted a prospective uncontrolled open-label study to analyze the efficacy and safety of IN for patients with UC. Methods: Patients with moderate to severe active UC (clinical activity index [CAI] ≥ 8) took 2 g/day of IN for 52 weeks. CAI at weeks 0, 4, 8, and 52 and Mayo endoscopic subscore (MES) and Geboes score (GS) at weeks 0, 4, and 52 were assessed. Clinical remission (CAI ≤ 4), mucosal healing (MES ≤ 1), and histological healing (GS ≤ 1) rates at each assessment were evaluated. Overall adverse events (AEs) during study period were also evaluated. The impact of IN on mucosal microbial composition was assessed using 16S ribosomal RNA gene sequences. Results: Thirty-three patients were enrolled. The rates of clinical remission at weeks 4, 8, and 52 were 67%, 76%, and 73%, respectively. The rates of mucosal healing at weeks 4 and 52 were 48% and 70%, respectively. AEs occurred in 17 patients (51.5%) during follow-up. Four patients (12.1%) showed severe AEs, among whom 3 manifested acute colitis. No significant alteration in the mucosal microbial composition was observed with IN treatment. Conclusions One-year treatment of moderate to severe UC with IN was effective. IN might be a promising therapeutic option for maintaining remission in UC, although the relatively high rate of AEs should be considered.

BACKGROUND/AIMS: It remains uncertain which patients with stricturing-type Crohn's disease (CD) require early small bowel surgery after the initial diagnosis. We aimed to clarify clinical characteristics associated with the intervention in such condition of CD. METHODS: We retrospectively evaluated the clinical course of 53 patients with CD and small bowel strictures who were initially treated with medications after the initial diagnosis. We investigated possible associations between small bowel surgery and the following: clinical factors and radiologic findings at initial diagnosis and the types of medications administered during follow-up. RESULTS: Twenty-eight patients (53%) required small bowel resection during a median follow-up period of 5.0 years (range, 0.5–14.3 years). The cumulative incidence rates of small bowel surgery at 2, 5, and 10 years were 26.4%, 41.0%, and 63.2%, respectively. Univariate analysis indicated that obstructive symptoms (P=0.036), long-segment stricture (P<0.0001), and prestenotic dilation (P<0.0001) on radiography were associated with small bowel surgery, and immunomodulatory (P=0.037) and biological therapy (P=0.008) were significant factors during follow-up. Multivariate analysis revealed that long-segment stricture (hazard ratio [HR], 4.25; 95% confidence interval [CI], 1.78–10.53; P=0.001) and prestenotic dilation (HR, 3.41; 95% CI, 1.24–9.62; P=0.018) on radiography showed a positive correlation with small bowel surgery, and biological therapy (HR, 0.40; 95% CI, 0.15–0.99; P=0.048) showed a negative correlation. CONCLUSIONS: CD patients with long-segment stricture and prestenotic dilation on radiography seem to be at a higher risk of needing small bowel surgery. For such patients, early surgical intervention might be appropriate, even at initial diagnosis.
Biological Therapy ; Constriction, Pathologic ; Crohn Disease ; Diagnosis ; Follow-Up Studies ; Humans ; Incidence ; Intestine, Small ; Multivariate Analysis ; Radiography ; Retrospective Studies

A 78-year-old man was diagnosed with adult T-cell leukemia/lymphoma (ATL) and was started on standard chemotherapy 1 year earlier. However, treatment was discontinued because of adverse drug reactions and worsening delirium. Thereafter, he remained stable and was followed up while receiving etoposide. He then visited our hospital because of acute abdominal pain and underwent surgery with a diagnosis of gastrointestinal perforation. Intraoperative observation showed a reddened, concentric wall thickening measuring 4 cm and a perforation site in the ileum, and thus partial resection of the small bowel was performed. The histological diagnosis was small bowel perforation due to tumor cell invasion. Two months postoperatively, he started a less intensive chemotherapy regimen along with palliative care, and died due to the primary disease approximately 5 months postoperatively. ATL involves systemic organs because of its high organ-affinity. Once it involves the gastrointestinal tract, various gastrointestinal symptoms can occur. Patients with ATL are at risk of developing gastrointestinal perforation at any time during the clinical course. Therefore, clinicians should be aware that once gastrointestinal perforation develops, the prognosis becomes extremely poor. Assessment of the disease state, early detection of gastrointestinal lesions, and prevention of opportunistic infections appear to be important in the management of patients with ATL.

　　Pancreatic neuroendocrine tumors, relatively rare cancers, mostly arise in the pancreatic parenchyma with infrequent involvement of the main pancreatic duct. Now and then, however, case reports have been published on pancreatic neuroendocrine carcinoma in which the main pancreatic duct is obstructed by tumor cells with severely fibrous stromal cells. Here, in this paper, we report a case of pancreatic neuroendocrine carcinoma with obstruction of the main pancreatic duct. A 59-year-old man complained of right upper abdominal pain. Magnetic resonance cholangiopancreatography and fat-suppressed T1-weighted magnetic resonance imaging showed gallbladder stones, a low-intensity-area measuring 8 mm in diameter in the pancreatic body, and club-shaped dilatation at the distal end of the pancreatic duct. The patient was thus diagnosed with a tumor in the pancreatic body and cholecystolithiasis, and underwent distal pancreatectomy and cholecystectomy. HE-staining showed tumor cells with eosinophilic cytoplasm and nuclear atypia. The infiltrative growth of the cells with severe fibrosis caused stenosis of the pancreatic duct. Based on the positive results of immunohistochemical staining for chromogranin A and synaptophysin and the Ki-67 index, the tumor was finally identified as pancreatic neuroendocrine carcinoma. The patient has been under follow-up with no additional treatment for >3 years since the surgery, without evidence of tumor recurrence.

　　Among visceral artery aneurysms, those arising in the region of the pancreatic duodenal artery due to celiac artery stenosis are rare. We report a surgical case with stenosis caused by dissecting celiac artery aneurysms and multiple aortic aneurysm rupture in the pancreaticoduodenal region. A 72-year-old man with a history of distal gastrectomy for gastric cancer was carried into our hospital by ambulance for acute abdominal pain. CT scans showed dissected aneurysms of the root of the celiac artery and hepatic artery as well as massive retroperitoneal hematoma around the pancreaticoduodenum and intraperitoneal hemorrhage. Arteriography of the superior mesenteric artery revealed multiple aneurysms of the pancreaticoduodenal artery that might have caused rupture. In the late phase, retrograde flows in the gastroduodenal, hepatic, celiac, and splenic arteries from the pancreaticoduodenal artery were contrast-enhanced. Because it was thought that transcatheter arterial embolization or surgical aneurysmectomy for pancreaticoduodenal aneurysms could prevent blood flow in all circulating branch arteries of the celiac artery, leading to extensive organ ischemia, the gastric pouch, spleen, entire pancreas, and gallbladder were resected. The patient has been doing well.

Kinki University School of Medicine introduced clerkships for undergraduate clinical training in 1999. Clinical clerkships are performed for the first 8 weeks of the sixth academic year. In 1999 and 2000 we conducted questionnaire surveys asking students about this system. The teaching staff encourages students to participate extensively in clinical situations, which reflects the consensus about this system. We also performed similar surveys of nurses and teaching staff. Clinical clerkships did not increase the incidence of problems between patients and medical staff. Many students felt their motivation to be a physician was increased. Although the findings of these questionnaire surveys indicate that our clerkship system works successfully, they also revealed some problems for sixth-year students. Although we recognize the significance of this system for undergraduate clinical training, further improvement is required.