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A 69-year-old man presented to our hospital with chief complaints of epigastral pain and nausea, was diagnosed with intestinal obstruction after gastric surgery. Abdominal CT performed on the admission showed the tumor located on the terminal ileum. On colonoscopy, type 1 cancer was found near the Bauhin valve in the ileum, and suspected primary ileal carcinoma. Laparoscopic ileocecal resection was performed. The pathological diagnosis was moderately differentiated adenocarcinoma, and the pathological stage was T3(SS), N1(3/16), M0, Stage ⅢA. Although superficial surgical site infection was occurred, the patient was discharged 11 days after surgery. He hoped to adopt without adjuvant chemotherapy, so he has been followed as outpatient. Twenty one months since the surgery, there has been no evidence of cancer recurrence.

We herein report an interesting case in which a complete response was achieved with oral anticancer monotherapy for unresectable lymph node metastasis after surgery for cecal cancer. A 78-year-old woman was referred to our hospital to undergo a detailed examination for anemia. The examination led to a diagnosis of cecal cancer. She underwent open right hemicolectomy combined with adjacent abdominal wall resection and reconstruction of abdominal wall defects the next month. During follow-up without adjuvant therapy at her request, right iliac lymph node metastasis was detected 5 months later. A lymphadenectomy by laparotomy was attempted 6 months later but ended as only an exploratory laparotomy because the metastatic lymph node was difficult to detach from the vascular wall. Starting the next month, oral anticancer monothera- py(TS-1, 80mg/day for 2weeks followed by 1week of rest)was started at the patient's request. Abdominal ultrasonography performed in March 2011 revealed no evidence of lymphadenopathy, and subsequent imaging tests also confirmed the absence of lymphadenopathy. The anticancer monotherapy was discontinued after 4 years of medication. The patient remains alive, after 3 years and 5 months of medication to date, without recurrence.

We report here a rare case of gastric metastasis after resection ofa transverse colon cancer in which eating ability was restored following mFOLFOX6 (folinic acid plus fluorouracil plus oxaliplatin) plus cetuximab (Cet) chemotherapy. A 56-year-old man with chief complaints of constipation and abdominal fullness was referred to our hospital. In February 2013, he was diagnosed with transverse colon cancer via enema and colonoscopy. We performed transverse colon cancer resection followed by a 6-month course of capecitabine chemotherapy. In July 2014, the patient's serum carcinoembryonic antigen level increased, in October, he was again referred to our hospital with complaints of appetite loss and vomiting. He was diagnosed with multiple lymph node and gastric metastases via ultrasonography, computed tomography, and endoscopy, as well as multiple lung metastases via computed tomography. As the gastric metastases and vomiting rendered him unable to eat, a nasogastric tube was inserted and was administered mFOLFOX6 plus Cet chemotherapy. After 2 courses of chemotherapy his ability to eat was restored. As of March 2015, the patient remains alive following 12 courses of chemotherapy.

We report a rare case of long -term survival after laparoscopic resection of sigmoid colon cancer with multiple liver metastases, followed by 5-fluorouracil Leucovorin irinotecan with bevacizumab (FOLFIRI+Bev) chemotherapy. A 61-year-old woman was referred to our hospital with a principal complaint of bloody stools. She was diagnosed with sigmoid colon cancer by colonoscopy and multiple liver metastases by ultrasonography. In October 2008, we performed laparoscopic resection of the sigmoid colon cancer with multiple liver metastases, followed by 4 courses of modified 5-fluorouracil Leucovorin oxaliplatin ( mFOLFOX6) chemotherapy. In February 2009, abdominal ultrasonography showed progressive disease, and as a result the patient was administered 73 courses of FOLFIRI +Bev chemotherapy. As of March 2014, the patient has survived for more than 5 years following treatment, but still has liver metastases. The possibility of resecting multiple liver metastases from colorectal cancer should be considered, and in some cases, chemotherapy may enhance survival.

We report a rare case of a patient with multiple liver metastases of gastric and rectal cancers after laparoscopic sigmoidectomy, who responded completely to S-1 therapy followed by open gastrectomy. A 72-year-old man with a chief complaint of occult blood in the feces was referred to our hospital and was diagnosed with rectal cancer by colonoscopy. In addition, we found concomitant gastric cancer by gastrointestinal fiberscopy. Abdominal plain computed tomography showed no liver metastasis. In August 2010, we performed laparoscopic resection of the rectal cancer. However, at the time of discharge, abdominal enhanced computed tomography showed multiple liver metastases. Then, we administered 4 courses of S-1 therapy. In December 2010, abdominal enhanced computed tomography showed no liver metastasis. In March 2011, because no other lesion without residual gastric cancer was detected, the patient underwent gastrectomy followed by S-1 therapy. As of January 2012, the patient is alive and disease free. S-1 therapy with laparoscopic resection for rectal cancer and gastrectomy may help prolong the survival of patients with multiple liver metastases of gastric and rectal cancers.

We report a rare case of esophageal cancer resection in which lung metastases was resected after chemotherapy with paclitaxel. A 59-year-old man with epigastralgia as a chief concern was referred to our hospital and was diagnosed with esophageal cancer by gastrointestinal fiber. In June 2007, the cancer was resected and followed by 3 courses of weekly chemotherapy with paclitaxel. In January 2009, chest computed tomography showed lung nodules (Rt-S1 and Rt-S5), and positron emission tomography (PET) showed uptake (Rt-S1); a final diagnosis of multiple lung metastases was made. Thereafter, the patient underwent 8 courses of weekly chemotherapy with paclitaxel. In December 2009, the growing Rt-S1 nodule was detected but no other lesion. The patient underwent a resection of lung metastases followed by 5 courses of weekly chemotherapy with paclitaxel. As of June 2011, the patient was alive and disease free. In conclusion, the resection of solitary lung metastases derived from esophageal cancer should be considered because it may improve survival.