| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
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Nd:YAG
| battle's sign | <clinical sign> Postauricular (behind the ear) ecchymosis in cases of fracture of the base of the skull (basal skull fracture). (27 Sep 1997) |
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| beak sign | <clinical sign> Appearance of the distal oesophagus, on a contrast oesophagram, in achalasia; also used to describe the proximal pyloric canal on upper GI series in congenital pyloric stenosis. (05 Mar 2000) |
| Bechterew's sign | <clinical sign> Paralysis of automatic facial movements, the power of voluntary movement being retained. (05 Mar 2000) |
| Beevor's sign | <clinical sign> With paralysis of the lower portions of the recti abdominis muscles the umbilicus moves upward. (05 Mar 2000) |
| Bezold's sign | Inflammatory oedema at the tip of the mastoid process in mastoiditis. Synonym: Bezold's sign. (05 Mar 2000) |
| Biederman's sign | <clinical sign> A dusky redness of the lower portion of the anterior pillars of the fauces in certain cases of syphilis. (05 Mar 2000) |
| Bielschowsky's sign | <clinical sign> In paralysis of a superior oblique muscle, tilting the head to the side of the involved eye causes that eye to rotate upward. (05 Mar 2000) |
| Biermer's sign | <clinical sign> Complete bilateral paralysis of the adductor muscles of the larynx with severe inspiratory dyspnea. Synonym: Biermer's sign. (05 Mar 2000) |
| Biernacki's sign | <clinical sign> Analgesia to percussion of the ulnar nerve in tabes dorsalis and dementia paralytica. (05 Mar 2000) |
| Biot's breathing sign | <clinical sign> Irregular periods of apnea alternating with four or five deep breaths; seen with increased intracranial pressure. (05 Mar 2000) |
| Biot's sign | <clinical sign> Abnormal breathing pattern characterised by periods of apnea and periods in which several breaths of similar volume are taken; seen with increased intracranial pressure. (05 Mar 2000) |
| Bird's sign | <clinical sign> The presence of a zone of dullness on percussion with absence of respiratory sign's in hydatid cyst of the lung. (05 Mar 2000) |
| Bjerrum's sign | A comet-shaped scotoma, occurring in glaucoma, attached at the temporal end to the blind spot or separated from it by a narrow gap; the defect widens as it extends above and nasally curves around the fixation spot, and then extends downward to end exactly at the nasal horizontal meridian. Synonym: Bjerrum's sign, sickle scotoma. (05 Mar 2000) |
| blueberry muffin sign | <radiology> Raised, purple skin lesions, dermal metastases of neuroblastoma (stage IV-S) (12 Dec 1998) |
| blue dot sign | <clinical sign> A blue or black spot visible beneath the skin on the cranial aspect of testis or epididymis. This is a torsed testicular appendage and is usually quite tender. (05 Mar 2000) |