Solid mediastinal masses, 1419 Solid organ injuries, 1089 –1090 Somatic symptom/related disorders, 1442 –1444 conversion disorder, 1443 initial assessment, 1443 management, 1443 –1444 psychosomatic diagnosis, historical features of, 1443 t treatment goals, 1442 –1443 Sore throat common causes, 509 t diagnostic approach to, 511 f differential diagnosis, 508 –510 , 509 t evaluation and decision, 510 –512 Centor criteria, 512 clinical decision rules (CDRs), 512 tests, 512 life-threatening causes, 509 t Space-occupying lesions of brain and spinal cord, 329 Spasmus nutans, 330 Spermatocele, 413 , 415 Spherocytes, 420 Spider bites, 636 –637 , 636 f Spinal cord concussion, 556 Spinal cord dysfunction, 893 –894 Spinal cord injury without radiographic abnormality (SCIWORA), 1212 Spinal cord syndromes, 1249 –1251 cervical spine demonstrating epidural hematoma, MRI of, 1251 f graphic illustrations, 1250 f os odontoideum, 1250 f ossiculum terminale, 1250 f Spinal cord tumors, 329 Spinal dysraphism, 305 Spinal epidural abscesses, 328 , 1388 Spinal epidural hematomas, 556 , 1250 , 1386 –1387 Spinal hemorrhage, 1386 –1387 Spinal infection, 1387 discitis/osteomyelitis, 1387 –1388