Robotically-enhanced surgical anatomy enables surgeons to perform distal gastrectomy for gastric cancer using electric cautery devices alone.

BACKGROUND: Despite recent advances in robotic urological surgery, the feasibility and clinical merit of robotic gastric surgery have not yet been fully documented. Therefore, we designed a prospective, non-randomized study to determine the feasibility and safety of robot-assisted distal gastrectomy (RADG) for gastric cancer using electric cautery devices, which are more familiar to open surgery. METHODS: Between April 2010 and December 2012, 181 patients treated by distal gastrectomy for gastric carcinoma were eligible for this study. According to their intent to undergo uninsured robotic surgery, 21 patients were treated with RADG (RADG group) while 160 patients were treated by conventional laparoscopic distal gastrectomy (LDG group). Under a basic working hypothesis that the superior visualization and unique movement of the robotic arms during dissection would be closely associated with reduced amount of blood loss, even though an equivalent extension of lymph node dissection was carried out, we prospectively collected data from patients in the RADG and LDG groups. RESULTS: All patients were successfully treated without conversion except for one patient in the RADG group who underwent conversion to laparoscopic total gastrectomy. In comparison with the patient groups, the estimated blood loss in patients in the RADG group treated with electric cautery devices only was smaller, but not significantly, than patients in the LDG group treated with ultrasonic-activated devices, although the same extent of lymph node dissection was achieved. In contrast, there were four patients (2.5 %) in the LDG group who developed a pancreas fistula or intra-abdominal abscess, while no patients treated with RADG developed such complications. CONCLUSIONS: RADG using electric cautery instruments without ultrasonic-activated devices is feasible and safe. The robot enables particular surgical views, called robotically-enhanced surgical anatomy, and may contribute to reducing blood loss despite the fact that only electric cautery was used.

Clinicopathological features of gastric metastasis from breast cancer in three cases.

The common sites for metastases from breast cancer are lymph nodes, bone, lung, liver, and brain. Gastrointestinal (GI) metastasis is rarely found or diagnosed in patients with breast cancer. This report presents three cases of gastric metastasis from breast cancer. Case 1 was a 42-year-old female diagnosed with gastric metastasis after mastectomy with axillary lymph node dissection for invasive lobular carcinoma of the left breast. Case 2 was a 54-year-old female who was diagnosed to have invasive lobular carcinoma of the left breast with systemic bone and gastric metastasis. Case 3 was a 54-year-old female who was diagnosed to have bilateral invasive ductal carcinoma of the breast with simultaneous bone and gastric metastasis. The immunohistochemical statuses for estrogen receptor, progesterone receptor, mammaglobin, and gross cystic disease fluid protein-15 (GCDFP-15) between the primary and gastric metastatic lesions were all well matched. All three cases were treated with systemic chemotherapy, hormone therapy or both, without surgical intervention for gastric lesions. Two patients with disseminated disease died 27 and 58 months after diagnosis of gastric metastasis, while one patient without organ metastasis is still alive at 56 months after diagnosis. It is important to make a correct diagnosis by distinguishing gastric metastasis from breast cancer in order to select the optimal initial treatment for systemic disease of breast cancer.

Triangulating stapling technique for esophagogastrostomy after minimally invasive esophagectomy.

BACKGROUND: The triangulating stapling technique is one of the reconstruction methods used that provides favorable surgical outcomes in several areas of the digestive tract. However, the results in the cervical esophagogastric anastomosis are not well documented. METHODS: Using a prospectively maintained comprehensive database, we reviewed the surgical results of 160 consecutive patients who underwent minimally invasive esophagectomy followed by cervical triangulating stapling esophagogastrostomy during 2 periods from May 2002 to May 2012 so as to determine the efficacy of the triangulating stapling technique using 2 different types of stapling devices. RESULTS: The rates of anastomotic leakage and stricture in this series were low (1% and 15%, respectively). The rate of anastomotic stricture was significantly reduced when a linear stapler with a cutting knife was used (9%). A logistic regression analysis showed a reduction of anastomotic stricture to be significantly associated with the use of only a linear stapler with a cutting knife. CONCLUSION: Cervical esophagogastric anastomosis by the triangulating stapling technique is safe and feasible. We consider a linear stapling device equipped with a cutting knife to be more suitable for performing the triangulating stapling technique.