Biomedical subjects

Rodrigo Gomes da Silva

Publications and source records attributed to Rodrigo Gomes da Silva.

7 recordsLinked to original sources

PubMed2006

Analysis of prognostic factors in seventy patients having a complete cytoreduction plus perioperative intraperitoneal chemotherapy for carcinomatosis from colorectal cancer.

BACKGROUND: Although lymph node and liver metastases are recognized as indications for resection of metastatic disease from colorectal cancer, carcinomatosis has not traditionally been regarded as having surgical treatment options. Reports have suggested that complete surgical removal of carcinomatosis combined with thorough irrigation of the peritoneal cavity with chemotherapy could result in longterm survival in selected patients. Proper selection factors are important because palliative surgery in these patients has not proved beneficial. STUDY DESIGN: From a database of 156 patients with carcinomatosis from colorectal cancer, a retrospective analysis of data prospectively recorded in 70 patients with complete cytoreduction was performed. Eleven clinical and treatment factors were studied in univariate and multivariable analyses using survival as an end point. RESULTS: By univariate analysis, patients with peritoneal cancer index (PCI) of<20 had a median survival of 41 months compared with 16 months for patients with PCI>20 (p=0.004). The difference in negative versus positive lymph nodes was also significant; differences in survival that were improved but not significant were present for age greater than 30 years, mucinous histology, location within the colon versus rectum, and absence of an adverse factor such as cancer perforation or obstruction present at the time of primary cancer resection. Only PCI<20 versus PCI>20 and lymph node status were significant in the multivariable analysis. CONCLUSIONS: Favorable longterm results of complete cytoreduction in patients treated for carcinomatosis are associated with a limited volume of carcinomatosis observed at the time of cytoreduction and in patients with negative lymph nodes at the time of primary operation.

Adenocarcinoma↗

PubMed2005

Late postoperative follow-up of patients undergoing subtotal splenectomy.

PURPOSE: Over the past 21 years, we have performed more than 200 subtotal splenectomies, in which the upper splenic pole vascularized only by the gastrosplenic pole vascularized only by the gastrosplenic vessels is preserved, to treat different pathologic conditions. A meticulous follow-up of the postoperative results of this procedure is of fundamental importance. METHODS: All patients undergoing subtotal splenectomy were invited to be reviewed. A total of 86 patients who had undergone surgery 1 to 20 years ago were gathered; the surgical procedure was performed for one of the following conditions: portal hypertension due to schistosomiasis (n = 43), trauma (n = 31), Gaucher's disease (n = 4), myeloid hepatosplenomegaly due to myelofibrosis (n = 3), splenomegalic retarded growth and sexual development (n = 2), severe pain due to splenic ischemia (n = 2) and pancreatic cystadenoma (n = 1). Patients underwent a hematologic exam, an immunologic assessment, abdominal ultrasonography, computed tomography, scintigraphy and endoscopy. RESULTS: Increased white blood cell count and platelets were the only hematological abnormalities. No immunologic deficit was found. Esophageal varices were still present in patients who underwent surgery because of portal hypertension although without rebleeding. The ultrasound, tomography and scintigraphy exams confirmed the presence of functional splenic remnants without significant size alteration. CONCLUSIONS: Subtotal splenectomy seems to be a safe procedure that can be useful in treating conditions involving the spleen. The functions of the splenic remnants are preserved during long periods of time.

Follow-Up Studies↗

PubMed2005

Stapled hemorrhoidectomy: present status.

AIM: To evaluate cost-effectiveness of stapled hemorrhoidectomy comparing its results with conventional technique. SOURCE OF DATA: We retrospectively analyzed the MEDLINE data basis from 2000 to 2004 studying randomized clinical trials which compared pain intensity, recovery period, return to work and occurrence of anal incontinence, in addition to postoperative complications and costs evaluation between stapled and conventional hemorrhoidectomy during different periods of follow-up. CONCLUSIONS: Stapled hemorrhoidectomy provides lesser postoperative pain and earlier return to work than conventional hemorrhoidectomy. However, its efficacy could not be determined, since rigorous prospective and randomized clinical trials with long-term follow-up periods and large size samples are not available at this time.

Animals↗

PubMed2005

Limited survival in the treatment of carcinomatosis from rectal cancer.

PURPOSE: Carcinomatosis from colon and rectal cancer has always been regarded as a lethal condition. Recently, numerous reports suggest that long-term survival is possible in selected patients if a definitive management strategy is used. An important task involves the clear description of the clinical features that influence prognosis in these patients. METHODS: From June 1981 to November 2004, 156 patients with peritoneal carcinomatosis secondary to colorectal cancer underwent cytoreductive surgery with perioperative intraperitoneal chemotherapy. Among these patients, 11 had rectal cancer with carcinomatosis and are the focus of the present study. The survival of patients with peritoneal carcinomatosis of rectal cancer origin was compared with patients with colon cancer. In the data analysis, patients were classified by completeness of cytoreduction score. RESULTS: The mean follow-up for 11 patients with rectal cancer was 15.7 (range, 3-51) months. At the end of the cytoreductive surgery, the cytoreduction was complete in six patients, nearly complete in two patients, and there was gross disease in three patients. The median survival of the six rectal cancer patients with complete cytoreduction was 17 (range, 12-29) months and 35 (range, 3-241) months for 64 colon cancer patients with complete cytoreduction (P = 0.126). The five-year survival for patients with rectal cancer with complete cytoreduction was 0 percent and for patients with colon cancer was 33 percent. CONCLUSIONS: Patients with peritoneal carcinomatosis secondary to rectal cancer treated by cytoreductive surgery combined with intraperitoneal chemotherapy have a poor prognosis. Some improvement in these poor results may occur if resection of a rectal cancer with carcinomatosis is delayed until definitive treatment of the primary cancer plus the carcinomatosis is possible.

Adult↗

PubMed2004

The impact of early nutrition on metabolic response and postoperative ileus.

PURPOSE OF REVIEW: Early nutrition has been evaluated and used as a possible strategy to decrease the negative impact of the metabolic response to injury and postoperative ileus. The metabolic response to injury, be it surgical or traumatic, is a physiological mechanism that, according to the magnitude and duration of the event, can impact on the patient's morbidity and survival. The adequate initial approach is a determinant factor that might influence its outcome. Simultaneously, gastrointestinal tract motility is transiently impaired, leading to the so-called postoperative ileus. The latter not only causes patient discomfort, but is also related to abdominal complications and worsening of the nutritional status, as well as increased length of hospital stay and costs. RECENT FINDINGS: Multimodal surgical strategies such as preoperative intake of a carbohydrate drink, together with patient education of the postoperative care plan, efficacious analgesia and early nutrition have been described to significantly decrease the stress response and improve the ileus. Therefore, these strategies accelerate rehabilitation and, as a consequence, decrease complications and length of hospital stay and its related costs. SUMMARY: Understanding perioperative pathophysiology and implementing care regimes through a multimodal approach in order to reduce the stress of the operation and the related postoperative ileus are major challenges. These factors will certainly impact on patient outcomes.

Hospitalization↗

PubMedDate not supplied

Recurrence of pseudomyxoma peritonei within the inguinal canal.

AIM AND BACKGROUND: Tumor appearing in an inguinal hernia sac indicates widespread carcinomatosis with ascites. A new onset hernia is a common clinical presentation of pseudomyxoma peritonei syndrome arising in an appendiceal mucinous tumor. Recurrence of pseudomyxoma peritonei within the inguinal region was previously reported in only a single patient. We present five patients with a recurrence of pseudomyxoma peritonei tumor nodules in the inguinal region following cytoreductive surgery and attempt to understand the etiology of this treatment failure. METHODS AND STUDY DESIGN: From a database of 910 patients with mucinous appendiceal tumors with peritoneal dissemination who had definitive treatment, five patients who had disease recurrence within the inguinal region were identified. The clinical histories were studied and presented in order to make future recommendations regarding the management of these patients. RESULTS: Five patients with ages ranging 39 to 67 years had a mucinous tumor in the inguinal region as a recurrence after a previous cytoreductive surgery combined with perioperative intraperitoneal chemotherapy. One of them had separate recurrence in both right and left inguinal regions. All these patients were made disease-free by the reoperative surgery with a sacrifice of the testicle in four. None have evidence of a recurrence of an inguinal hernia despite the lack of formal repair. CONCLUSION: At the time of initial cytoreductive surgery the surgeon should be aware of the inguinal region as a possible site of relapse. This may be more problematic in patients who have had prior surgery with mucoid fluid in a hernia as the presenting sign of pseudomyxoma peritonei. Inguinal recurrences should be removed with clear margins even if orchiectomy is required.

Adenocarcinoma, Mucinous↗

PubMedDate not supplied

Splenic metastases from mucinous neoplasms of the appendix and colon.

AIMS AND BACKGROUND: Splenic metastases associated with mucinous intraabdominal tumors have been an enigma in the radiologic and oncology literature. These focal parenchymal defects from a non-metastasizing malignancy within an organ that rarely develops metastatic foci, even with high-grade cancer, were studied. METHODS: Information on 9 patients who underwent splenectomy with intraparenchymal splenic masses associated with appendiceal or colorectal mucinous tumors with peritoneal dissemination was collected. The CT scan, the histopathology and the clinical parameters of these patients were studied. A literature review searching for prior reports of this subject was performed. RESULTS: Eight of these patients had mucinous appendiceal tumors and 1 a mucinous sigmoid colon cancer. All patients had mucinous carcinomatosis at some time in their clinical course. These splenic tumor masses had a CT image compatible with metastases and not compatible with mucinous tumor layered out of the splenic capsule. None of the patients had evidence of metastases to other sites such as liver or lymph nodes. All patients had a mucinous histopathology. Splenectomy may be associated with prolonged survival. CONCLUSIONS: From our review of the clinical information available on these 9 patients, these splenic lesions were thought to be an entrapment of mucinous tumor within splenic surface trabeculae, which expand into the splenic parenchyma resembling metastatic disease. These CT findings may be more accurately referred to as splenic pseudometastases.

Adenocarcinoma, Mucinous↗