RESUMEN
The development of a new rabbit model for study of neovascularization of the jejunal graft is described. The relationship between stripping of the serosal membrane and the speed of the neovascularization process was analyzed. The results demonstrate that the visceral peritoneum acts like a physical barrier, retarding the formation of the new nutrient blood supply from recipient bed to the jejunal graft.
Asunto(s)
Yeyuno/irrigación sanguínea , Yeyuno/trasplante , Neovascularización Patológica/fisiopatología , Animales , Yeyuno/ultraestructura , Microcirculación/ultraestructura , Modelos Biológicos , Neovascularización Patológica/patología , Peritoneo/cirugía , Peritoneo/ultraestructura , ConejosRESUMEN
OBJECTIVE: To emphasize the importance of cervicofacial teratoma in neonates and review the pertinent literature.METHODS: The authors report a case of cervicofacial teratoma in a 30th week gestation male newborn, submitted to total surgical resection. The diagnosis was confirmed by routine histological examination.RESULTS: Prenatal diagnosis was realized by ultrasound. A cesarean section was performed and the newborn presented progressive respiratory failure due to the large cervical mass. In the second day of life, a surgical resection was performed, but the newborn succumbed shortly thereafter. A pathological examination confirmed an Immature Teratoma grade I.CONCLUSION: Despite the low incidence of the cervicofacial teratoma, which account for approximately 3% of all neonatal teratomas, the early prenatal diagnosis might be helpful for success of any surgical therapeutic procedure. This is the third related case in latino americana's literature.
RESUMEN
A retrospective review is presented of 76 patients, referred to the National Cancer Center Hospital, Tokyo, who underwent surgical management for squamous cell carcinoma of the floor of the mouth during the period March, 1969, to May, 1988. Of the 76 patients, 34 (45%) were treated by surgery alone, 19 (25%) by cryosurgery and 23 (30%) by a combination of surgery and another treatment modality, either irradiation (22 patients) or chemotherapy (one patient). Fifty-three percent of the patients had stage III or IV disease. Twenty-two patients (29%) developed recurrent disease during follow-up. Eighty-five percent of the treatment failures were identified within 24 months of treatment. The most common site of recurrence, seen in 14 out of 22 cases, was the neck. The actuarial five-year survivals for patients were: stage I disease, 96%; stage II, 79%; stage III, 66%; stage IV, 49%. Recent technical advances, allowing extensive resection and reconstruction in the surgical management of this kind of tumor, have improved the prognosis even for patients with advanced disease.