AMARAL, F., NORÕES, J. AND DREYER, G.
DIAGNOSIS OF SCROTAL LYMPHATIC FILARIASIS BY ULTRASOUND
REPORT OF TWO CASES.
Revista Brasileira de Radiologia , 28: 217-219, 1995. (Portuguese)
The authors studied the usefulness of ultrasonography in localizing Wuchereria bancrofti adult worms in scrotal area from two symptomless microfilaria carriers. Dilated lymphatic vessels which contained echogenic structures with aleatory and continue movements were identified in both patients. These movements were detected as well by M-mode, being possible to establish the differential diagnosis with the fine echoes seen in the interior of varicoceles. The pulsed Doppler showed a fragmented and coarse sound, different from those peculiar to venous and arterial vessels. After consent, segments of lymphatic vessels were surgically removed from both patients, containing in their lumen three and four living W. bancrofti adult worms, respectively. The authors make a short review from the literature and discuss the consequences of in vivo localization of living adult parasites responsible for bancroftian filariasis, by a noninvasive and widely available methodology.