Ultrasound and clinical features for differential diagnosis of low-grade appendiceal mucinous neoplasm and acute suppurative appendicitis.

Aim: To investigate the application of ultrasound along with clinical features for the differential diagnosis of low-grade appendiceal mucinous neoplasm (LAMN) and acute suppurative appendicitis (ASA).

Material And Methods: The ultrasound and clinical data of 76 patients with histopathologically confirmed LAMN (31 patients) and ASA (45 patients) were retrospectively analyzed. Univariate analysis and binary logistic regression analysis of the influencing factors were conducted to identify LAMN and ASA.

[The improvement of mixed human serum-induced anaphylactic reaction death model in guinea pigs].

Objective: To increase the death rate of fatal anaphylaxis in guinea pigs and the detectahie level of the tryptase of mast cell in hlood serum.

Methods: Seventy-four guinea pigs were randomly divided into five groups: original model group, original model control group, improved model group, improved model control group, improved model with non-anaphylaxis group. Using mixed human serum as the allergen, the way of injection, sensitization and induction were improved.