middle phalanx, 1147 tibial tubercle, 1203 , 1367 f Axenfeld–Rieger spectrum, 186 Axillary adenopathy, 312 B Babesiosis, 806 Bacitracin, for face burns, 1101 Back disorders discitis (diskitis), 1375 –1377 spondylolisthesis, 1377 , 1377 f spondylolysis, 1377 Back pain algorithm, 364 f causes, 363 t differential diagnosis, 362 evaluation and decision, 362 –364 history, 362 imaging studies, 364 laboratory studies, 364 physical examination, 362 –363 red flags for pediatric patients with, 363 t Bacteremia, 803 Bacteremia and sepsis, 803 –804 , 805 t Bacterial endocarditis, 614 Bacterial epiglottitis, 479 Bacterial infections, 438 –442 Bacterial meningitis, 222 , 328 Bacterial scalp infections, 312 Bacterial tracheitis, 141 , 513 Bacterial vaginosis, 338 , 753 Bag mask ventilation, 38 Bag-valve-mask (BVM) ventilation, 44 , 48 –49 , 65 Baker cyst, 279 Balanitis, 384 t, 530 Balanoposthitis, 338 , 530 , 1335 –1336 , 1336 f Bankart lesions, 1182