Efficacy of CT Colonography in the Detection of Colorectal Polypoid Lesions

PURPOSE: We wished to compare CT colonography with conventional colonoscopy for the detection of colorectal polypoid lesions, and we wanted to evaluate the role of IV contrast-enhanced CT colonography for the differentiation between benign polypoid lesions and malignant polypoid lesions. MATERIALS AND METHODS: Thirty-four consecutive patients underwent CT colonography prior to conventional colonoscopy. Precontrast prone-position CT images and postcontrast supine position CT images were obtained and the virtual colonoscopic images were reconstructed. Axial, sagittal and coronal images with virtual colonoscopic images were prospectively interpreted for the presence, size and morphologic features of colorectal polypoid lesions, and then these findings were compared with the colonoscopic findings. The degree of enhancement of colorectal polypoid lesions was measured by subtracting the attenuation values obtained with precontrast and postcontrast CT images for the differentiation of benignity and malignancy of the colorectal polypoid lesions. RESULTS: Among 75 colorectal polypoid lesions identified on conventional colonoscopy, 49 neoplasms were found on CT colonography, and the overall detection rate was 65.3%. Detection rate of lesions smaller than 10 mm was 52.1% (24/46), and the detection rate for lesions equal to or larger than 10 mm was 86.2% (25/29). Morphologic features of the sessile type lesions on CT colonography were well correlated with those noted on colonoscopy, but the stalks were not identified in 6 of 13 polyps on CT colonography. There was no statistical correlation between benignity and malignancy and the degree of contrast enhancement on CT colonography. CONCLUSION: CT colonography is a useful modality for the detection of colorectal polypoid lesions equal to or larger than 10mm, and it well demonstrates the morphologic features, except for the stalk of pedunculated polyps. However, CT colonography cannot differentiate benignity from malignancy.

A Study of the Prepregnancy Body Mass Index and Two-month-postpartum Weight Loss in the Uncomplicated Term Pregnancy / 대한산부인과학회잡지

OBJECTIVE: To determine the mean two-month-postpartum weight loss, standard deviations and the 10th, 25th, 50th, 75th, and 90th percentiles in the uncomplicated term pregnancy and to examine association between prepregnancy body mass index and two-month-postpartum weight loss. METHODS: We analyzed the two-month-postpartum weight loss data from 175 women who had healthy singleton term pregnancy in Han-il Hospital (Jan 2002-Dec 2002). Data were categorized in three groups according to body mass index. RESULTS: Mean two-month-postpartum weight loss was 9.46 +/- 3.42 kg. There was no statistically significant difference between prepregancy BMI groups and two-month-postpartum weight loss. The more weight gained during pregnancy, the more that was lost at two-month-postpartum. Parous women retained more of their pregnancy weight. Compared with women who delivered vaginally, women who delivered cesarean experienced greater weight loss at two-month-postpartum. CONCLUSION: More careful postpartum care according to the two-month-postpartum weight loss table is needed to prevent long-term obesity.

A Case of Primary Ovarian Pregnancy / 대한산부인과학회잡지

Ovarian pregnancy is a rare form of ectopic pregnancy that is often difficult to diagnose. The diagnostic criteria were described in 1878 by Spiegelberg, which comprise that the pregnancy is in the ovary and does not involve the tube. Ovarian pregnancy occurs in the corpus luteum, and is usually accompanied with the rupture of the ovary and massive hemoperitoneum. It presents as a hemorrhagic ovary and frequently misdiagnosed as a ruptured corpus luteum. We have experienced a case of ovarian pregnancy and reviewed it briefly.