46.Grossly, a granuloma tends to be a focal lesion. Seen here in a hilar lymph node is a granuloma. Granulomas due to infection are often"caseating" because they have prominent caseous necrosis.

46.肉芽肿多倾向为局部损伤，图示一肺门淋巴结肉芽肿，由于发生明显的干酪样坏死而干酪样变。