| fleischner sign | <radiology> Wide gap between thickened patulous ileocaecal valve and narrowed ulcerated terminal ileum, inverted umbrella defect, associated with tuberculous involvement of the ileocaecum (12 Dec 1998) |
|---|---|
| lambda sign | <radiology> Small ascending aorta: same size as right and left coronary aa., hypoplastic left heart syndrome (12 Dec 1998) |
| Lancisi's sign | <clinical sign> A large systolic jugular venous wave caused by tricuspid regurgitation replacing the normal negative systolic trough ("x" descent). (05 Mar 2000) |
| Landolfi's sign | <clinical sign> In aortic insufficiency, systolic contraction and diastolic dilation of the pupil. (05 Mar 2000) |
| football sign | <radiology> Large pneumoperitoneum outlining entire abdominal cavity, falciform ligament = cross threads (12 Dec 1998) |
| Forchheimer's sign | <clinical sign> The presence, in German measles, of a reddish maculopapular eruption on the soft palate. (05 Mar 2000) |
| Lasegue's sign | <clinical sign> When patient is supine with hip flexed, dorsiflexion of the ankle causing pain or muscle spasm in the posterior thigh indicates lumbar root or sciatic nerve irritation. (05 Mar 2000) |
| Fothergill's sign | <clinical sign> In rectus sheath haematoma, the haematoma produces a mass that does not cross the midline and remains palpable when the rectus muscle is tense. (05 Mar 2000) |
| Laugier's sign | <clinical sign> In fracture of the lower portion of the radius, the styloid processes of the radius and of the ulna are on the same level. (05 Mar 2000) |
| Friedreich's sign | <clinical sign> In adherent pericardium, sudden collapse of the previously distended veins of the neck at each diastole of the heart. (05 Mar 2000) |
| Froment's sign | <clinical sign> Flexion of the distal phalanx of the thumb when a sheet of paper is held between the thumb and index finger in ulnar nerve palsy. (05 Mar 2000) |
| Legendre's sign | <clinical sign> In facial hemiplegia of central origin, when the examiner raises the lids of the actively closed eyes the resistance is less on the affected side. (05 Mar 2000) |
| frostberg inverted-three sign | <radiology> Medial retraction of 2nd portion of duodenum, pancreatic carcinoma (less than10% of carcinoma's), acute pancreatitis, postbulbar ulcer disease (12 Dec 1998) |
| Leichtenstern's sign | <clinical sign> Tapping gently one of the bones of the extremities causes the patient to draw back violently, sometimes with a loud cry; noted in cases of cerebrospinal meningitis. Synonym: Leichtenstern's phenomenon. (05 Mar 2000) |
| lemon sign | <radiology> Concave frontal bones, suggests neural tube defect also: banana sign (12 Dec 1998) |