ABSTRACT
Objective To explore the value of ultrasound in diagnosis and classification of pilomatricoma.Methods Ultrasonic features of 63 cases with pilomatricoma confirmed by operation and pathology were analyzed and summarized retrospectively.Results According to if there was calcification in the tumor,pilomatricoma cases were classified into two groups(calcific group and non-calcific group).In addition,there were three subgroups in the calcific group based on the size and disposition of calcification:subgroup Ⅰ,completely echogenic mass with strong posterior acoustic shadowing in the subcutaneous layer (n=17,26.98%);subgroupⅡ,hypoechoic nodules with tiny calcification diffused distributed(n=15,23.80%);subgroup Ⅲ,hypoechoic nodules with large calcification(n=8,12.70%).Twenty-three cases (36.51%)were distributed into non-calcific group.Conclusions Ultrasonography is valuable for diagnosis and differential diagnosis of pilomatricoma,and it is an essential examination method for the tumor before operation.
ABSTRACT
Objective To evaluate the value of high-frequency ultrasound and X-ray barium meal examination in diagnosis and typing diagnosis of congenital hypertrophic pyloric stenosis(CHPS).Methods High-frequency ultrasound and X-ray barium meal examination were made in newborns with present symptom of vomiting,and comparison was made between the two examine methods.Retrospective analysis was made in 29 cases confirmed by surgical operation.Control normal group included twenty healthy newborns.Results In 29 CHPS cases,the diagnostic accordance rate of ultrasound was 1 00%.And the diagnostic accordance rate of X-ray barium meal examination was 93.1%(27/29).In all those CHPS cases,the length of pyloric canal were≥18 mm,the diameter of pyloric canal were≥14 mm,the wall thickness of pyloric canal were≥4 mm,the stenosis inside diameter were≤6 mm by ultrasound;in X-ray barium meal examination,the length of pyloric canal were≥20 mm,the inside diameter were≥7 mm,and there was significant difference in comparison with control group(P＜0.01).The CHPS was classified into two groups as mild stenosis and severe stenosis according to the inside diameter and the wall thickness of pyloric canal.The mild type showed the wall thickness was＞4 mm and≤6 mm,the inside diameter was＞3 mm;The severe type showed the wall thickness was＞6 mm,the inside diameter was≤3 mm or obliterate.Conclusions High-frequency ultrasound has significant clinical application value in diagnosis and subtype diagnosis of CHPS,it is an easy,reliable and safe examination method.
ABSTRACT
Objective To study the sonographic features of solid-pseudopapillary tumors of the pancreas(SPTP) and to explore the value of ultrasound in the dignosis,differential dignosis and type of SPTP.Methods B-mode ultrasonography and color Doppler flow imaging(CDFI) of nine cases of SPTP confirmed by clinical and pathology were enrolled in the study and some cases were compared with the findings of computed tomography (CT).Results On B-mode ultrasound images,tumors showed solid,solid and cystic alternative distributions or cystic structures,presenting as round or oval shape,well-defined margins.Of these nine lesions,one was mainly composed of solid part,seven showed solid tumor with cystic component inside and one showed cystic tumor.All tumors were encapsulated.The encapsulation was completive in seven cases,incontinuous in one case and interruptive in one case.In CDFI,blood flow was found in five cases, three cases were I-brand,one case was II-brand,one case was III-brand.The peak systolic velocity ranged from 8.6 cm/s to 33.2 cm/s,three cases were less than 20 cm/s.Resistance index(RI) varied from 0.38 to 0.56 and three cases were lower than 0.5.According to the sonographic features of SPTP,combined with related reviews about the tumor,those masses were classified into three types as homogeneous solid,solid and cystic alternative distributions and cystic tumor.Conclusions The B-mode ultrasound and CDFI characteristic findings might be of great value in dignosis and differential dignosis of SPTP.