ABSTRACT
Objective To observe ultrasonic manifestations of secondary intussusception (SI) in children. Methods Preoperative ultrasonic features of 125 children with histopathologically proved SI were retrospectively analyzed. Results Concentric circle sign in transverse section, sleeve sign in longitudinal section and abnormal mass echoes in intussusception loop were found in all 125 children. Low echo mass with small or round-shaped anechoic area was found in 28 children with juvenile polyps and 2 with juvenile polyposis syndrome. Wheel-like mass, radial distribution or high and low echo interphase were detected in 19 Peutz-Jeghers syndrome children, while cystic mass with thick wall showing "double ring" or "three ring" signs was found in 18 intestinal duplication children. Nodular changes or abnormal patterns of intestinal echo were observed in 17 children with Meckel's diverticulum. Obviously thick wall with rich blood supply was found in 11 children with allergic purpuras. Tubular hypoecho was detected in 6 appendicitis children. An extremely hypoechoic mass with abundant blood was noticed in 5 intestinal lymphoma children, while a mass of mixed echogenicity containing several small cystic areas was found in 2 ileal adenomyoma children. A mass echo was found in 2 lipoangioma children. A medium and high echo mass with low echo and anechoic area was found in 1 child with duodenal Brunner's gland adenoma. A mass with honeycomb microcystic margin was observed in 1 child with mesenteric lymphangio-cavernoma. A heterogeneous hypoechoic mass was found in 1 multiple polypoidal cavernous hemangioma child. A cystic mass with separation was found in 1 intestinal wall and mesentery vascular malformation child. An oval hypoechoic mass was detected in 1 child with low grade malignant angiogenic tumor. Thickened intestinal wall and lacked blood supply was found in 10 hemorrhagic necrotizing enterocolitis children. Conclusion Ultrasonography can be used to confirm original disease of SI in children, therefore provide important basis for clinical diagnosis and treatment of SI.
ABSTRACT
Objective To study the influencing factors and clinical significance of ultrasonic quantitative analysis of the hip-flexion coronal section in the normal infants.Methods Totally 100 normal infants were enrolled.Angle α,angle β and FHC on different positions(mild-flexion and flexion of the hip) were mearured.And angle β on different points(the labrum central and the acetabular tips) were measured.The variation of the measurement index between different positions were analyzed.Results ①There was no significant difference in angle α between the neutral position and hip-flexion position (P ＞0.05).② FHC decreased in the hip-flexion position,and there was significant difference compared with the neutral position (P ＜0.05).③βc were greater than βt in the two positions (P ＜0.05);βc and βt were all greater in hip-flexion position than those in neutral position,the difference was statistically significant (P ＜0.05).Conclusions The results obtained from angle α is stable under the coronal flexion view of the normal infants,and does not vary with changing position.The change of the angle β and FHC with the hip flexion could be used to evaluate the stability of the hip.Measured angle β on the labrum tip has good repeatability.So this point should be selected to measure the angle β.
ABSTRACT
ObjectiveTo investigate the value of strain ratio (SR) in the diagnosis of Hashimoto's thyroiditis.Methods 116 patients who had been diagnosed clinically as Hashimoto' s thyroiditis were enrolled in the study.Those patients were classified into four groups:the hyperthyroidism group,the euthyroidism group,the subclinical hypothyroidism group,and the clinical hypothyroidism group.50volunteers with normal thyroid functions were enrolled as a control group.SR of the thyroid and sternocleidomastoid muscle of same side was calculated.The correlation coefficient between the elasiticity SR and the serum thyroid stimulating hormone (TSH) was evaluated and their differences in the diagnosis of Hashimoto's thyroiditis were compared.ResultsThe Spearman's correlation coefficient between the SR and the serum TSH was 0.605,which was significant (P =0.000).The SR increased in an ascending order among the group with hyperthyroidism,the control group,the group with euthyroidism,the group with subclinical hypothyroidism,and the group with clinical hypothyroidism.ConclusionsElastography SR is valuable way for evaluating the progression of Hashimoto's thyroiditis.