OBJECTIVE: To describe clinical features and ultrasound findings of three cases 
of a little-known and relatively infrequent entity in daily clinical activity, 
which is often unnoticed and under-reported: penile Mondor's disease or 
superficial penile veins thrombophlebitis.
METHODS: We are reporting the cases of three patients aged 33, 25 and 39 years 
who were referred to our department, the first case with suspicion of inguinal 
hernia, the second one to rule out testicular pathology because of pubic and 
perineal discomfort, and the third one for painful induration of the dorsal 
region of the penis. The three patients underwent Doppler-ultrasound examination 
(Toshiba®, using a 13-18MHz linear transducer) to establish definitive 
diagnosis, and had a favorable evolution with conservative management.
RESULTS: Ultrasound examination revealed: Case 1. Penile superficial dorsal vein 
and lateral superficial veins thrombosis. Case 2. Thrombosis of the right branch 
of the superficial dorsal vein and its perineal distal connections. Case 3. 
Penile superficial dorsal vein thrombosis. Definitive diagnosis of the three 
cases was Mondor's disease.
CONCLUSIONS: Mondor's disease is an often under-reported entity in daily 
clinical activity. Doppler-ultrasound findings (echogenic material within veins, 
lack of any response after compression by the transducer and absence of color 
flow) confirm de diagnosis. This disease has a favorable evolution and 
functional prognosis. Knowledge of Mondor's disease by echographists is basic to 
avoid false-negative results in radiologic examination.