Yoshihito Furukita

Sentinel Lymph Node Biopsy Using Intraoperative Indocyanine Green Fluorescence Imaging Navigated with Preoperative CT Lymphography for Superficial Esophageal Cancer

BackgroundThe sentinel lymph node (SLN) concept has been gaining attention for gastrointestinal neoplasms but remains controversial for esophageal cancer. This study evaluated the feasibility of SLN identification using intraoperative indocyanine green (ICG) fluorescence imaging (IGFI) navigated by preoperative computed tomographic lymphography (CTLG) to treat superficial esophageal cancer.MethodsSubjects comprised 20 patients clinically diagnosed with superficial esophageal cancer. Five minutes after endoscopic submucosal injection of iopamidol around the primary lesion using a four-quadrant injection pattern with a 23-gauge endoscopic injection sclerotherapy needle, three-dimensional multidetector computed tomography was performed to identify SLNs and lymphatic routes. ICG solution was injected intraoperatively around the tumor. Fluorescence imaging was obtained by infrared ray electronic endoscopy. Thoracoscope-assisted standard radical esophagectomy with lymphadenectomy was performed to confirm fluorescent lymph nodes detected by CTLG.ResultsLymphatic vessels and SLNs were identified preoperatively using CTLG in all cases. Intraoperative detection rates were 100% using CTLG and 95% using IGFI. Lymph node metastases were found in four cases, including one false-negative case with SLNs occupied by bulky metastatic tumor that were not enhanced with both methods. The other 19 cases, including three cases of metastatic lymph nodes, were accurately identified by both procedures.ConclusionsPreoperative CTLG visualized the correct number and site of SLNs in surrounding anatomy during routine computed tomography to evaluate distant metastases. Referring to CTLG, SLNs were identified using IGFI, resulting in successful SLN navigation and saving time and cost. This method appears clinically applicable as a less-invasive method for treating superficial esophageal cancer.

Laparoscopic permanent sigmoid stoma creation through the extraperitoneal route.

About 50% of patients who have a permanent stoma experience some degree of parastomal hernia formation. To prevent this complication, the extraperitoneal route is considered to be more effective than the transperitoneal route in the case of open colorectal surgery. This technique also has superiority in avoiding postoperative intestinal obstruction. Although laparoscopic surgery for rectal cancer has not been proved to be as safe as open surgery by a randomized-controlled trial, some studies have shown the equality of long-term results with laparoscopic low anterior resection and laparoscopic abdominoperineal resection. It is anticipated that cases of laparoscopic abdominoperineal resection will increase in the near future. However, a laparoscopic technique for creation of a permanent stoma has hardly been discussed. Most operative procedures for laparoscopic stoma creation have been performed with transperitoneal route, which may cause parastomal hernia and/or intestinal obstruction. This report describes a laparoscopic technique for permanent sigmoid stoma creation through the extraperitoneal approach.

Resected xanthogranulomatous pancreatitis

Xanthogranulomatous changes in the pancreas are extremely rare. A 66-year-old man presented with a 2-year history of epigastralgia. Computed tomography scan revealed a 4-cm low-density area around the body of the pancreas. Magnetic resonance imaging demonstrated that the mass appeared hyperintense on a T2-weighted image and isointense on a T1-weighted image. Based on a diagnosis of invasive ductal carcinoma of the pancreas, distal pancreatectomy and splenectomy were performed. Sections examined from the mass showed an aggregation of many foamy histiocytes, lymphocytes, and plasma cells. The surrounding pancreatic tissue showed fibrosis and chronic inflammation. These findings suggested a xanthogranulomatous inflammation, and resulted in a diagnosis of xanthogranulomatous pancreatitis.

Preoperative chemotherapy with weekly docetaxel plus low-dose cisplatin and 5-fluorouracil for stage II/III squamous cell carcinoma of the esophagus

BackgroundDocetaxel is a powerful anticancer agent for esophageal cancer. Preoperative combined chemotherapy with weekly docetaxel plus low-dose cisplatin and 5-fluorouracil (DFP) followed by surgery is expected to improve the survival of patients with resectable esophageal squamous cell carcinoma.MethodsClinical stage II/III squamous cell carcinoma patients who received DFP followed by esophagectomy (NAC group, n = 13) were compared retrospectively with patients who received surgery without preoperative DFP (Surgery group, n = 12). Not only the efficacy and toxicity of initial chemotherapy but also morbidity and survival after esophagectomy were assessed.ResultsOf 13 patients, the overall response rate was 92.3%; 30.8% (4/13) patients had CR, 61.5% (8/13) PR, 7.7% (1/13) SD, and 0 (0/13) PD. The 4 patients who achieved a pathological complete response (pCR) included 1 with cT4N1M0, 2 with cT3N1M0, and 1 with cT3N0M0. More than grade 3 toxicity of neutropenia and stomatitis occurred in 15.4% and 23.1% of patients, respectively. Leakage was 23.1% in the NAC group and 8.3% in the Surgery group. No treatment-related deaths occurred in the NAC group.ConclusionsThis regimen as preoperative chemotherapy seemed to provide a high response rate and a favorable survival benefit with acceptable toxicity and morbidity. To validate the clinical significance of this protocol, a randomized trial is essential.

Efficacy of percutaneous endoscopic gastrostomy on unplanned treatment interruption and nutritional status in patients undergoing chemoradiotherapy for advanced head and neck cancer

OBJECTIVE Efficacy of percutaneous endoscopic gastrostomy (PEG) on unplanned treatment interruption and nutritional status was examined in patients undergoing chemoradiotherapy (CRT) for advanced head and neck cancer. METHODS We retrospectively reviewed hospital charts of 44 patients with advanced head and neck cancer who were treated with CRT. RESULTS CRT-induced mucositis of grade 3 or worse and inadequate oral intake of less than one third of their usual intake developed in 33 patients who were recommended PEG placement, but not in 11 patients. Thirteen patients accepted PEG placement and then completed CRT (compliant group). However, among 20 patients who refused both PEG and nasogastoric tube (NGT) placements (non-compliant group), 10 required unplanned interruptions of CRT at a radiation dose around 30-40 Gy (UI-CRT group) while 10 others could complete CRT without interruption (C-CRT group) CRT. Total serum protein levels were significantly decreased after CRT in all patients. DISCUSSION It is suggested that therapeutic PEG placement is useful for preventing unplanned interruption of CRT in patients with advanced head and neck cancer. After severe mucositis and inadequate oral intake have developed during CRT, PEG placement should be considered before the radiation therapy dose of 30 Gy.

Alteration of the oral environment in patients undergoing esophagectomy during the perioperative period

Objective: During the perioperative period, oral ingestion is changed considerably in esophagectomy patients. The aim of this study was to investigate oral environment modifications in patients undergoing esophageal cancer treatments due to changes in dietary intake and swallowing functions. Material and Methods: Thirty patients who underwent operation for removal of esophageal cancer in Tokushima University Hospital were enrolled in this study. Results: It was found that 1) the flow rate of resting saliva decreased significantly at postoperative period by deprived feeding for one week, although it did not recover several days after oral ingestion began, 2) the accumulation of dental plaque and the number of mutans streptococci in saliva decreased significantly after operation, while both increased relatively quick when oral ingestion began, and 3) the swallowing function decreased significantly in the postoperative period. Conclusions: These results suggest that dental professionals should emphasize the importance of oral health care and provide instructions on plaque control to patients during the perioperative period of esophageal cancer treatment.

Risk assessment of morbidities after right hemicolectomy based on the National Clinical Database in Japan

Nationwide databases are expected to provide critical data to improve medical practice. The present study used such data to develop risk models for clinically important outcomes after right hemicolectomy based on preoperative risk factors.

Change in body composition assessed by computed tomography in long-term survivors after esophageal cancer surgery

Weight loss especially muscle wasting is of critical importance to cancer patients because of their negative effects on survival, functional status, and tolerability of chemotherapy. This study aimed to clarify changes in body composition in long-tern survivors after esophageal cancer surgery. Twenty-four patients were assessed for serial weight and body composition, at baseline and again until 3 years after surgery. Computed tomography scan was used to assess body composition. These patients manifested a decline in mean body weight from 59.3 ± 7.5 kg to 47.5 ± 8.5 kg after 24 months (p<0.01). Then they started to recover their body weight. Abdominal fat mass in men and subcutaneous fat mass in women (p<0.05) increased significantly, but skeletal muscle area at the L3 vertebral level dropped continuously (p<0.05 in men) even after 2 years. The patients after surgery for esophageal cancer initially lost their body weight but they regained their body weight after 2 years. However, the increase in body weight was the result of the increase in fat mass, but not of the increase in muscle mass. Special nutrition support and exercise training will be needed to improve their nutritional status.