445 calories; 6 g fat; 1 g saturated fat; 47 mg cholesterol; 609 mg sodium; 46 g carbohydrate; 3 g fiber; 48 g protein
Cook pasta according to package directions.
Drain and rinse under cold water.
Mix pasta, tuna, and onion in a bowl.
In a separate bowl, combine oil, vinegar, lemon juice, garlic, and sugar.
Drizzle dressing over the pasta and top with tomatoes, olives and basil.