The screened patients were randomly assigned 25G puncture needles and 22G puncture needles in a 1;1 ratio, based on the computer-generated random order, before receiving an ultrasound endoscope puncture. Each puncture needle puncture lesions 2 needles, the same type of puncture needle tissue samples taken in the same tissue pathology bottle, all tissues after the completion of the necessary cytological smears, are placed in the Formalin solution to send tissue pathology, pathologists do not know the order of distribution of 2 puncture needles to evaluate the tissue results, all pathology results are reported by the hospital pathology center, audit.
Study Type
OBSERVATIONAL
Enrollment
73
The Third Xiangya Hospital of Central South University
Changsha, Hunan, China
RECRUITINGThe acquisition rate of the core tissue sample
A core tissue sample is defined as a sample with an histological structure that is fully used for tissue evaluation of target lesions.
Time frame: One week
The length of the tissue strip
The quality of tissue samples obtained by puncture is assessed by the pathologist, whether intact tissue structure is preserved, and the length of tissue strips
Time frame: One week
the technical success rate 、the success rate of immunogrouping dyeing and the retention of the organizational structure
The quality of tissue samples obtained by punctures is evaluated by pathologists, technical success means that puncture 2 needles can obtain sufficient tissue samples for analysis to be evaluated by endoscopy.
Time frame: One week
the incidence of adverse events and the incidence of device defects
Adverse events refer to adverse medical events that occur in the course of research, including punctured complications such as bleeding, abdominal pain, infection, pancreatitis, etc. throughout the study process.
Time frame: one week
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