Objective To analyse the CT features of solitary bronchioalveolar carcinoma(SBAC) so that to improve the CT diagnostic accuracy.Methods CT findings of 39 cases with SBAC proved by operation and pathology were studied,and an analysis as compared with 48 cases other type of peripheral pulmonary carcinoma.Results CT findings included lobulations in 32,spiculation in 33,pleural tags in 25,bronchovascular bundles in 14,vacuole or/and bronchiologram in 18 and ground glass changs in 8 cases.Conclusion The characteristic CT manifestations of SBAC are:(1)Vacuole or/and bronchiologram;(2)Long spiculation;(3)Ground-glass.It is important to recognize the CT appearances of SBAC in order to improve diagnostic ability.

Aim To investigate the gender differences in electrophysiology and neuroanatomy of myelinated and unmyelinated visceral and baroreceptor afferent neurons(VANs and ABNs) of adult rats.Methods VANs and ABNs were isolated enzymatically and Vagus-nodose slice preparation was also applied in this study.For identification of ABNs,aortic depressor nerve(ADN) was labeled using fluorescent dye.Whole-cell patch technique was used to record action potential(AP).Electronic microscopy was selected for morphological analysis of ADN.Results(1) A-and C-type VANs were identified and significant differences of AP discharge profiles between female and male were not established;(2) except for the traditionally classified A-and C-types,myelinated Ah-type VGNs were also identified with faster conduction velocity,lower firing threshold,and higher neuronal excitability.Importantly,these Ah-types were found in female rats with a similar frequency like A-types but rarely seen in males.(3) Ah-type ABNs were also identified by fluorescence.(4) Morphological data showed that myelinated fiber in ADN was ~25% of total and this result was consistent with our electrophysiological data.(5) Firing frequency of Ah-types(20~40 Hz) was lowered than that of A-types(40~150 Hz,P