Mowat, Harold, 1883- · London : H. Frowde · leaf 133
the active foci, and to localize the spreadof the disease. The amount of opacity observedwill depend upon the extent of the mischief, and willvary in intensity from the early fine mottling to thefinal calcified blotches, passing through the inter-mediate stage of caseous patches, which cast shadows… … Fig. ii. Phthisical Cavity half filled with Fluid. The ujiper borderof the shadow is horizontal, and remained so on tiltmg. more active their shape is irregular, and if they arefilled with fluid it may be a matter of difficulty todetect their presence, as they show little contrastto the surrounding…
X-rays
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