RESUMO
INTRODUCTION AND OBJECTIVES: With the advances of technology, the incidence of renal cancer has increased, but the stage at the time of diagnosis has decreased. In selected patients nephron sparing surgery can be made but there are patients who have important comorbidities and therefore they are not candidates to surgical management. For them, there are new minimally invasive procedures that use different types of energy to perform ablation of the neoplastic tissue; one of which is radiofrequency ablation. This article reports the initial experience with this therapeutic modality in a reference center of Mexico City. METHODS: Four patients with 5 renal masses of 3 cm or less, and with significant comorbidities that exclude the possibility of surgery, underwent radiofrequency ablation under fluoroscopic guidance. RESULTS: Five renal tumors in four patients were treated with radiofrequency ablation in a period of 18 months. No major complication during the procedure was reported, mean follow- up was of 12 months and they keep a good oncologic control. CONCLUSIONS: Radiofrequency ablation is a safe and reproducible therapeutic option for patients with incidental renal masses below 3 cm. We need more follow up to compare oncologic control with the gold standard, surgery.
Assuntos
Ablação por Cateter , Neoplasias Renais/cirurgia , Idoso , Idoso de 80 Anos ou mais , Humanos , México , Pessoa de Meia-Idade , Encaminhamento e Consulta , População UrbanaRESUMO
OBJECTIVE: To describe the clinical, radiological, morphological, and immunohistochemical characteristics of three cases of pneumatosis intestinalis. METHODS: From 1982 to 1999, cases diagnosed as pneumatosis cystoides intestinalis were reviewed. The laboratory results, X-ray findings, clinical course, treatment and evolution were obtained from the clinical charts. Slides and macroscopic photos were obtained from the surgical pathology files. New slides were obtained from the paraffin blocks for immunohistochemical detection of endothelial cells (CD 31) and macrophagic cells (CD 68). RESULTS: We found three patients with pneumatosis intestinalis associated to a history of abdominal surgeries from 936 enteral resections (0.3%). These three patients showed clinical features of intestinal obstruction. Morphological and immunohistochemical analysis showed pseudocysts without an epithelial and endothelial lining. Some spaces were lined by multinucleated giant cells positive for CD 68 and endothelial cells that were CD 31 positive. CONCLUSIONS: Antecedent of obstruction and abdominal surgeries were the constant association with pneumatosis cystoides intestinalis. Most lesions were pseudocysts without epithelial or endothelial lining.