| Wernicke's sign | In hemianopeia, a reaction due to damage of the optic tract, consisting in loss of pupillary constriction when the light is directed to the blind side of the retina; pupillary constriction is maintained when light stimulates the normal side. This sign cannot be seen with a bright light because of intraocular scatter onto the seeing half of the retina. Synonym: Wernicke's sign. (05 Mar 2000) |
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| westermark sign | <radiology> Seen in 2% of pulmonary embolism, focal oligaemia (vasoconstriction) distal to embolus (12 Dec 1998) |
| Westermark's sign | In chest radiography, an abrupt tapering of a vessel caused by pulmonary thromboembolic obstruction. (05 Mar 2000) |
| Westphal-Erb sign | <clinical sign> Abolition of the patellar tendon reflex, in tabes and certain other diseases of the spinal cord, and occasionally also in brain disease. Synonym: Erb sign, Westphal's phenomenon, Westphal's sign, Westphal-Erb sign. (05 Mar 2000) |
| Westphal's sign | <clinical sign> Abolition of the patellar tendon reflex, in tabes and certain other diseases of the spinal cord, and occasionally also in brain disease. Synonym: Erb sign, Westphal's phenomenon, Westphal's sign, Westphal-Erb sign. (05 Mar 2000) |
| Comby's sign | <clinical sign> An early sign of measles, consisting in thin whitish patches on the gums and buccal mucous membrane, formed of desquamating epithelial cells. (05 Mar 2000) |
| comet sign | In chest radiology, the curved appearance of pulmonary arteries and veins associated with round atelectasis, fibrosis associated with organizing pleurisy. Synonym: comet tail sign. (05 Mar 2000) |
| comet tail sign | In chest radiology, the curved appearance of pulmonary arteries and veins associated with round atelectasis, fibrosis associated with organizing pleurisy. Synonym: comet tail sign. (05 Mar 2000) |
| commemorative sign | A phenomenon pointing to the previous existence of some disease other than the one present at the time. (05 Mar 2000) |
| placental sign | <clinical sign> Slight endometrial oozing of blood which occurs in certain animals and sometimes in women at the time of implantation of the fertilised ovum; in women, if the blood appears externally it may be mistaken for a scanty menstrual period. (05 Mar 2000) |
| Mosler's sign | <clinical sign> Tenderness over the sternum in a patient with acute myeloblastic anaemia. (05 Mar 2000) |
| Comolli's sign | <clinical sign> In cases of fracture of the scapula, a typical triangular cushion-like swelling appears, corresponding to the outline of the scapula. (05 Mar 2000) |
| Wilder's sign | <clinical sign> A slight twitch of the eyeball when changing its movement from abduction to adduction or the reverse, noted in Graves' disease. (05 Mar 2000) |
| wimberger sign | <radiology> Bilateral metaphyseal destruction in upper medial tibias, congenital syphilis, less likely: bacterial osteomyelitis, hamartomosis, hyperparathyroidism (12 Dec 1998) |
| Winterbottom's sign | <clinical sign> Swelling of the posterior cervical lymph nodes, characteristic of early stages of African trypanosomiasis; useful for surveys or control of migrations from endemic areas of persons with preclinical infections. (05 Mar 2000) |