SPHENOIDAL ANGLE
\sfˈɛnɔ͡ɪdə͡l ˈaŋɡə͡l], \sfˈɛnɔɪdəl ˈaŋɡəl], \s_f_ˈɛ_n_ɔɪ_d_əl ˈa_ŋ_ɡ_əl]\
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Virchow and Welcher's term for an a. formed by two lines meeting in the median line at the center of the transverse gropve of the optic commissure, one of which is drawn from the nasion and the other from the basion [B. N. A., angulus sphenoidalis].
By Smith Ely Jelliffe
Word of the day
Sporadic Retinoblastoma
- A malignant arising nuclear layer retina that is most primary eye in children. The tumor tends to occur early childhood or infancy present at birth. majority are sporadic, but condition may be transmitted as autosomal dominant trait. Histologic features include dense cellularity, small round polygonal cells, areas of calcification and necrosis. An abnormal pupil reflex (leukokoria); NYSTAGMUS; STRABISMUS; visual loss represent common clinical characteristics this condition. (From DeVita et al., Cancer: Principles Practice Oncology, 5th ed, p2104)