Cat-pork syndrome: a case report with a thee years follow-up.

A case of cat-pork syodrome with subsequent follow-up in a 17-year-old male patient is reported. At the initial observation, the patient was sensitized to cat epithelium - along with house dust mites and grass pollen - from two years. In 2001 he had an immediate reaction with urticaria, angloedema and dyspnea after eating grilled meat and sausage, and skin tests and CAP/RAST revealed a sensitization to pork meat, with a value of 4.7 KUiL for pork meat and of 55 KUIL for cat epithelium. The patient was followed up for three years with annual repetition of diagnostic tests. The elimination of pork meat from the diet was inoomplete, with slight skin reactions to small amounts of cooked pork meat but tolerance to seasoned pork products such as salami. A challenge test with pork meat in 2004 was positive, with angloedema and asthma symptoms, and CAP/RAST showed a value of 43 KU/L for cat epithelium and 4 KU/L for pork meat RAST inhibition confirmed the significant cross-reactivity between the two allergen sources.