Merck Manual

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Ovine pulmonary adenocarcinoma, ultrasound
Ovine pulmonary adenocarcinoma, ultrasound

Ultrasound image of OPA. The 5-MHz probe is at the top of the image, dorsal to the left, centimeter markers on the right margin. There is abrupt loss of the hyperechoic line representing the visceral pleura replaced by a uniform hypoechoic area representing the tumor mass.

Courtesy of Dr. Philip Scott.