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Treatment of peritoneal carcinomatosis by cytoreductive surgery and intraperitoneal hyperthermic chemoperfusion (IHCP): postoperative outcome and risk factors for morbidity.

BACKGROUND: Cytoreductive surgery with limited or extended peritonectomy associated with intraperitoneal hyperthermic chemoperfusion (IHCP) has been proposed for treatment of peritoneal carcinomatosis (PC) from abdominal neoplasms. METHODS: Fifty-nine patients with PC from abdominal neoplasms underwent 61 treatments using this technique from January 2000 to August 2005. Surgical debulking, completed by partial or total peritonectomy, was performed in most cases. In 16 patients with positive peritoneal cytology without macroscopic peritoneal disease, IHCP was performed in order to prevent peritoneal recurrence. IHCP was carried out throughout the abdominopelvic cavity for 60 minutes using a closed abdomen technique. Intra-abdominal temperature ranged between 41 degrees C and 43 degrees C; mitomycin C (25 mg/mq) and cisplatin (100 mg/mq) were the anticancer drugs generally used, and they were administered with a flow rate of 700-800 ml/minute. RESULTS: Mean hospital stay was 13 +/- 7 (range 7-49) days. Postoperative complications occurred in 27 patients (44.3%); of these, major morbidity was observed in 17 (27.9%). The most frequent complications were wound infection (9 cases), grade 2 or greater hematological toxicity (5 cases), intestinal fistula (5 cases), and pleural effusion requiring drainage (5 cases). Reoperation was necessary in 5 patients (8.2%). One patient with multiorgan failure died in the postoperative period (mortality rate: 1.6%). Multivariate analysis of several variables identified completeness of cancer resection (CCR-2/3 vs. CCR-0/1, relative risk: 9.27) and age (relative risk: 1.06 per year) as independent predictors of postoperative morbidity. Preliminary follow-up data indicate that survival probability may be high in patients with ovarian or colorectal cancer and low in patients with gastric cancer. CONCLUSIONS: IHCP combined with cytoreductive surgery involves a high risk of morbidity, but postoperative complications could be resolved favorably in most cases with correct patient selection and adequate postoperative care. Tumor residual and advanced age significantly increase the risk of morbidity after this procedure.

Adult↗

Cavography in the management of malignant abdominal tumors.

Six cases of malignant abdominal neoplasm with extensive tumor involvement of the veins form the basis of this report. One case was a child with retroperitoneal liposarcoma. Proper therapeutic management in these cases was dependent upon a complete angiographic evaluation, including cavography. This procedure is virtually without complications and should, therefore, be done routinely in cases of abdominal neoplasms for evaluation of the operability, to confirm the angiographic findings indicating intravenous tumor invasion or extravenous compression, and as a primary examination in the assessment of possible or known abdominal tumors in children.

Abdominal Neoplasms↗

Laparoscopic and intraoperative ultrasound.

OBJECTIVE: Intraoperative ultrasound has gradually expanded in the last two decades to a variety of surgical specialties and has gained an established role in many surgical procedures. Laparoscopic and thoracoscopic ultrasound are the latest modes of intraoperative sonography. They have been introduced mainly to overcome the two major drawbacks of laparoscopy, i.e. the capability of showing only the surface of the organs and the lack of manual palpation of the anatomical structures. We review and discuss the established and the most recent applications of intraoperative and laparoscopic ultrasound. MATERIAL AND METHODS: The technology, new indications and results of intraoperative and laparoscopic ultrasound are reviewed. This review is based on the experience gained in our Institution during more than 500 surgical procedures and the analysis of the literature on the subject. RESULTS: The yield of intraoperative and laparoscopic ultrasound consists in confirming preoperative studies and acquiring new data which would not be available otherwise. An important role of these techniques is determining the anatomy of the involved organs, thus providing a guidance for surgery. Both techniques have an important role in surgical decision-making, particularly with respect to hepatic, biliary and pancreatic malignancies. In some series the rate of major changes in the surgical strategy can be as high as 38%. A relatively new application of intraoperative ultrasound is the possibility to perform interstitial therapy of tumors at the time of the initial surgery. This can be useful, for example, in patients undergoing liver resection, when other unresectable lesions are found in a different segment or in the contralateral lobe. Finally, laparoscopic sonography has an important role in staging abdominal neoplasm, providing more information than preoperative imaging and laparoscopic exploration. This feature can be used to effectively stage gastrointestinal malignancies, pancreatic carcinoma, and abdominal lymphomas. CONCLUSION: The application of intraoperative ultrasound will increase in the era of minimally access surgery and this will be dependent not only on technical improvements in ultrasound technology. Indeed, it may be expected that a variety of open procedures will be performed with videolaparoscopic monitoring and will need the guidance of laparoscopic sonography. In the future, the staging of abdominal neoplasm may be markedly improved by laparoscopy combined with laparoscopic ultrasound; however a cost-benefit analysis of these techniques and a comparison with preoperative tests should be carried out.

Endosonography↗

Metastatic nodules of the abdominal wall: US and CT evaluation..

PURPOSE: Metastatic recurrence in the abdominal wall surgical scar is not uncommon. Our aim was to evaluate the role of ultrasonography (US), computed tomography (CT) and percutaneous fine needle aspiration biopsy in the diagnosis of metastatic recurrence along the surgical scar. MATERIALS AND METHODS: We evaluated 17 nodules in the surgical scar, either single (n=9 patients) or multiple (n=2 patients), in 11 patients operated on for known abdominal neoplasm confirmed by histology. The most common primary tumour was colonic carcinoma. All patients had undergone open surgery, and the lesions were detected at routine follow-up or at diagnostic examinations performed for clinical suspicion of recurrence. Ultrasonography (7.5-10/10-13 MHz) and fine needle biopsy were performed in all cases; contrast-enhanced CT was carried out in 10 patients. All lesions underwent histopathological examination. RESULTS: The histological findings showed 16/17 metastatic nodules and one suture granuloma. Lesions had variable size (15-55 mm), roundish shape, ill-defined margins (60% cases) and hypoechoic solid echotexture. All were characterised by marked contrast medium uptake on CT examination. US-guided aspiration biopsy precisely defined the metastatic nature of the nodules in 16/17 cases. In the patient with suture granuloma, both CT and US findings suggested malignancy; however, cytology showed only scant fibrous material. The anterior abdominal wall was the most common site of metastatic disease (14 lesions). CONCLUSIONS: US enables an accurate detection and diagnosis of metastatic nodules along the surgical scar. Fine needle aspiration biopsy represents, in our opinion, the most suitable procedure for providing an accurate diagnosis of this condition.

Abdominal Neoplasms↗