| Helbings' sign | <clinical sign> A malalignment of the Achilles tendon associated with a valgus deformity of the os calcis. (05 Mar 2000) |
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| prodromic sign | <clinical sign> A sign that appears during the prodrome of a disease. Synonym: antecedent sign. (05 Mar 2000) |
| sandwich sign | <radiology> Ultrasound: hypoechoic solid mass, around central linear hyperechoic area, CT: soft-tissue density surrounding bowel, most likely to be lymphomatous involvement of mesentery (12 Dec 1998) |
| Sansom's sign | <clinical sign> In mitral stenosis, apparent duplication of the second heart sound. (05 Mar 2000) |
| Hennebert's sign | <clinical sign> Nystagmus produced by pressure applied to a sealed external auditory canal; may be seen in labyrinthine fistula or with intact tympanic membrane in syphilitic involvement of the otic capsule. (05 Mar 2000) |
| Schapiro's sign | <clinical sign> In myocardial weakness, no slowing of the pulse occurs when the patient lies down. (05 Mar 2000) |
| Schlesinger's sign | In tetany, spasm both of the extensor muscles of the knee and of the calf muscles when the extended leg is flexed at the hip. Synonym: leg phenomenon, Pool-Schlesinger sign, Schlesinger's sign. In tetany, contraction of the arm muscles following the stretching of the brachial plexus by elevation of the arm above the head with the forearm extended, resembles the contraction resulting from stimulation of the ulnar nerve. Synonym: arm phenomenon. (05 Mar 2000) |
| Schultze's sign | <clinical sign> In latent tetany, tapping the tongue causes its depression with a concave dorsum. Synonym: tongue phenomenon. (05 Mar 2000) |
| scimitar sign | <clinical sign> A curvilinear structure seen roentgenographically in the lung and associated with anomalous pulmonary venous drainage, suggesting the sickle shape, of a Turkish saber; also used to refer to the scalloped shape of the sacrum in spinal dysraphism with anterior meningocele. (05 Mar 2000) |
| pseudo-Graefe sign | <clinical sign> A lid retraction phenomenon similar to Graefe's sign, but due to aberrant regeneration of fibres of the oculomotor nerve into the levator of the upper lid. (05 Mar 2000) |
| Higoumenakia sign | <clinical sign> Sternoclavicular swelling in late congenital syphilis. (05 Mar 2000) |
| Hill's sign | <clinical sign> In aortic insufficiency, greater systolic blood pressure in the legs than in the arms; normal arterial systolic pressure in the leg is 10 to 20 mm of Hg above that in the arm, whereas in aortic insufficiency the difference may be 60 to 100 mm of Hg. Synonym: Hill's phenomenon. (05 Mar 2000) |
| Hoagland's sign | <clinical sign> Eyelid oedema in infectious mononucleosis. (05 Mar 2000) |
| Hoffmann's sign | <clinical sign> In latent tetany mild mechanical stimulation of the trigeminal nerve causes severe pain, flexion of the terminal phalanx of the thumb and of the second and third phalanges of one or more of the fingers when the volar surface of the terminal phalanx of the fingers is flicked. Synonym: digital reflex, Hoffmann's reflex, snapping reflex. (05 Mar 2000) |
| puddle sign | <clinical sign> A sign of free abdominal fluid: the patient assumes a position on all fours; one flank is percussed by repeated light flicking of constant intensity while a Bowles-type stethoscope is placed over the most dependent portion of the abdomen and gradually moved toward the flank opposite the percussion; a sharp increase in the intensity of the sound picked up by the stethoscope indicates the level of fluid. (05 Mar 2000) |