ABSTRACT
The purposes of this retrospective study were to analyze local control of squamous cell carcinoma of the cervix treated with computed tomography (CT)-based image-guided brachytherapy (IGBT), as well as the factors affecting local control. A total of 39 patients were analyzed. The prescribed dose to the pelvis was 45-50 Gy with or without central shielding (CS). IGBT was delivered in 1-5 fractions. The total dose for high-risk clinical target volume (HR-CTV) was calculated as the biologically equivalent dose in 2-Gy fractions. The median follow-up period was 29.3 months. The 2-year overall survival and local control rates were 97% and 91%, respectively. In univariate analysis, the dose covering 90% of the HR-CTV (D90) and tumor size were found to be significant factors for local control. The cutoff values of tumor size and D90 for local control were 4.3 cm (area under the curve [AUC] 0.75) and 67.7 Gy (AUC 0.84) in the CS group and 5.3 cm (AUC 0.75) and 73.7 Gy (AUC 0.78) in the group without CS, respectively. However, though the local control of CT-based IGBT was favorable, the results suggested that the dose required for tumor control may differ depending on the presence of CS.
Subject(s)
Brachytherapy/methods , Carcinoma, Squamous Cell/radiotherapy , Radiotherapy, Conformal/methods , Uterine Cervical Neoplasms/radiotherapy , Adult , Aged , Aged, 80 and over , Carcinoma, Squamous Cell/pathology , Female , Humans , Imaging, Three-Dimensional , Middle Aged , Radiotherapy Dosage , Retrospective Studies , Tomography, X-Ray Computed , Uterine Cervical Neoplasms/pathologyABSTRACT
A capillary hemangioma with hydrocephalus in the posterior fossa of a fetus was detected on ultrasonography at 38 weeks and 4 days of gestation. A well-defined, round tumor with a mixed pattern occupied the posterior fossa, and the normal cerebellum was significantly compressed by this tumor. No other anomaly was detected. Delivery was induced because of rapidly progressive hydrocephalus, and an otherwise healthy female infant weighing 2800 g was delivered vaginally at 39 weeks and 4 days of gestation. Histologic examination of the lesion through biopsy demonstrated capillary hemangioma. The tumor spontaneously decreased in size, and disappeared six months later. The child is now 2 years of age, and is developing normally.
