Table 2.
Microbiologic findings in 162 patients with peritonsillar abscess and complications
| Organisms | PPA n = 36 | LS n = 26 | NF n = 33 | DM n = 46 | Other n = 21 | All n = 162 |
|---|---|---|---|---|---|---|
| Aerobic bacteria | ||||||
| Streptococcus | ||||||
| Group A | 9 | 6 | 1 | 4 | 20 | |
| Group C | 2 | 3 | 2 | 7 | ||
| Beta-hemolytic | 1 | 1 | 2 | 5 | ||
| Viridans group | 10 | 2 | 10 | 15 | 4 | 41 |
| spp. | 1 | 2 | 8 | 11 | ||
| Enterococcus spp. | 2 | 1 | 3 | |||
| Staphylococcus aureus | 1 | 2 | 1 | 14 | 18 | |
| Coagulase-negative | 1 | 6 | 6 | 1 | 14 | |
| spp. | 4 | 4 | ||||
| Haemophilus spp. | 1 | 1 | 2 | 4 | ||
| Enterobacteriales | 6 | 4 | 2 | 12 | ||
| Pseudomonas aeruginosa | 1 | 1 | 6 | 8 | ||
| Burkholderia cepacia | 1 | 1 | ||||
| Stenotrophomonas maltophilia | 1 | 1 | ||||
| Corynebacterium spp. | 1 | 1 | 2 | |||
| Eikenella corrodens | 1 | 1 | ||||
| Arcano. haemolyticum | 1 | 1 | ||||
| Neisseria spp. | 1 | 1 | ||||
| Acinetobacter coloaceticus | 2 | 2 | ||||
| Moraxella catarrhalis | 1 | 1 | ||||
| Anaerobic bacteria | ||||||
| Bacteroides spp. | 1 | 4 | 9 | 14 | ||
| Porphyromonas spp. | 2 | 2 | ||||
| Prevotella spp. | 1 | 2 | 6 | 5 | 3 | 17 |
| Fusobacterium | ||||||
| nucleatum | 2 | 1 | 1 | 4 | ||
| necrophorum | 3 | 15 | 1 | 2 | 21 | |
| spp. | 1 | 1 | ||||
| Peptostreptococcus spp. | 1 | 5 | 4 | 10 | ||
| Peptoniphilus asaccharolyticus | 1 | 1 | 1 | 3 | ||
| Parvimonas micra | 1 | 1 | ||||
| G + , non-spore-forming bacilli | 2 | 3 | 5 | |||
| Unspecified anaerobes | 9 | 2 | 4 | 1 | 16 | |
| Unspecified bacteria | 3 | 7 | 10 | |||
| Fungi | ||||||
| Candida albicans | 1 | 3 | 2 | 6 | ||
| Aspergillus fumigatus | 1 | 1 | ||||
| Polymicrobial | ½ | 4/26 | 18/33 | 33/46 | 5/21 | 61/128 |
Bacterial names are reported in contemporary nomenclature (in contrast to Tables 4 and 5)
The names of the following bacteria are merged
Viridans group streptococci: viridans group (n = 16), Group F (n = 1), non-hemolytic (n = 4), mitis group (n = 2), sanguis (n = 1), salivarius (n = 2), intermedius (n = 1), constellatus (n = 3), anginosus group (n = 4), and milleri group (n = 7)
Enterococcus spp.: E. faecalis (n = 1) and Enterococcus species (n = 2)
Coagulase-negative staphylococci: hominis (n = 1), epidermidis (n = 6), haemolyticus (n = 2), and coagulase-negative staphylococci (n = 5)
Haemophilus spp.: Haemophilus influenza (n = 3) and Haemophilus parainfluenzae (n = 1)
Enterobacterales: Escherichia coli (n = 2), Enterobacter cloacae (n = 3), Enterobacter species (n = 1), Klebsiella pneumoniae (n = 2), Klebsiella species (n = 1), Proteus mirabilis (n = 1), Serratia marcescens (n = 1), and Citrobacter diversus (n = 1)
Bacteroides spp.: fragilis (n = 8), and species (n = 6)
Prevotella spp.: intermedia (n = 1), buccae (n = 1), oralis (n = 3), corporis (n = 1), melaninogenica (n = 6), and species (n = 5)
Peptostreptococcus spp.: Peptostreptococcus anaerobius (n = 3) and Peptostreptococcus species (n = 7)
G + , non-spore-forming bacilli: Eggerthella lenta (n = 2), Eubacterium species (n = 1), Bifidobacterium dentium (n = 1), and Eggerthia catenaformis (n = 1)
Unspecified: Gram-negative rod (n = 4), Gram-negative (n = 1), Gram-positive coccus (n = 2), Gram-positive rod (n = 1), Gram-positive (n = 2)
PPA parapharyngeal abscess, LS Lemierre´s syndrome, NF necrotizing fasciitis, DM descending mediastinitis, Spp species (no further specification was provided in the study), G- Gram-negative, G + Gram-positive, Arcano Arcanobacterium