Cat-scratch bacillus and Streptococcus pneumoniae causing submandibular suppurative adenitis and acute glomerulonephritis.

Acute cervical adenitis is a frequent problem in pediatrics. It is occasionally followed by acute postinfectious glomerulonephritis, which has a well-defined set of clinical and histological manifestations. We present two rare cases of acute postinfectious glomerulonephritis, one associated with Streptococcus pneumoniae and the second with cat-scratch disease. Cultures of material from the lymph nodes yielded S. pneumoniae type 15 in case 1. A pleomorphic gram-negative micro-organism, identified by silver stain as cat-scratch bacillus, was found in case 2.