| Wegner's line | A narrow, whitish, slightly curved line representing an area of preliminary calcification at the junction of the epiphysis and diaphysis of a long bone, related to syphilitic epiphysitis. (05 Mar 2000) |
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| Monro-Richter line | A line passing from the umbilicus to the anterior superior iliac spine. McBurney's point occurs on this line. Synonym: Monro's line, Richter-Monro line. (05 Mar 2000) |
| Monro's line | A line passing from the umbilicus to the anterior superior iliac spine. McBurney's point occurs on this line. Synonym: Monro's line, Richter-Monro line. (05 Mar 2000) |
| white line | A pale streak appearing within 30 to 60 seconds after stroking the skin with a fingernail, and lasting for several minutes; regarded as a sign of diminished arterial tension. Synonym: Sergent's white line. (05 Mar 2000) |
| white line of anal canal | A bluish pink, narrow, wavy zone in the mucosa of the anal canal below the pectinate line at the level of the interval between the subcutaneous part of the external sphincter and the lower border of the internal sphincter, said to be palpable. Synonym: Hilton's white line. (05 Mar 2000) |
| white line of frankel | <radiology> Dense zone of provisional calcification at edge of metaphysis, just beneath physis seen in scurvy (12 Dec 1998) |
| white line of Toldt | Lateral reflection of posterior parietal pleura of abdomen over the mesentery of the ascending and descending colon. Junction of parietal peritoneum with Denonvillieri's fascia. (05 Mar 2000) |
| pleuroesophageal line | On a frontal chest radiograph, the image of the interface between the right lung and oesophagus, the boundary of the azygoesophageal recess. (05 Mar 2000) |
| Conradi's line | A line extending from the base of the ensiform cartilage to the apex beat of the heart, corresponding approximately to the lower edge of the cardiac area. (05 Mar 2000) |
| Poirier's line | A line extending from the nasion to the lambda. (05 Mar 2000) |
| Correra's line | On a chest radiograph, the shadow of the soft tissues between the aerated lung and the bones of the thorax. Synonym: Correra's line. (05 Mar 2000) |
| mylohyoid line | A ridge on the inner surface of the mandible running from a point inferior to the mental spine upward and backward to the ramus behind the last molar tooth; it gives attachment to the mylohyoid muscle and the lowermost part of the superior constrictor of the pharynx. Synonym: linea mylohyoidea, internal oblique line, mylohyoid ridge. (05 Mar 2000) |
| costoclavicular line | A vertical line equidistant from the sternal and midclavicular lines. Synonym: linea parasternalis, costoclavicular line. (05 Mar 2000) |
| Crampton's line | A line from the apex of the cartilage of the last rib downward and forward nearly to the crest of the ilium, then forward parallel with it to a little below the anterior superior spine; a guide to the common iliac artery. (05 Mar 2000) |
| popliteal line | A ridge which extends obliquely downward and medially across the back of the tibia from the fibular articular facet; it gives origin to the soleus muscle. Synonym: linea musculi solei, line for soleus muscle, linea poplitea, popliteal line. (05 Mar 2000) |