Summary
Ultrasound examination and biopsy of the nonaffected testis was performed in 78 men with a unilateral testicular cancer. Each testis was measured in three planes and the volume was calculated using the formula of an ellipsoid. The ultrasonic texture of each testis was given a score ranging from 1 to 5 as follows: 1, very regular; 2, slightly irregular; 3, irregular with small echogenic points; 4, very irregular or with coarse echogenic points; and 5, irregular with demarcated areas raising suspicion of tumor. Biopsies were examined for the presence of tubules with carcinoma in situ (CIS), germinative epithelium, Sertoli cell only, and obliterations; the thickness of tubular membranes and the amount of Leydig cells were registered. The mean ultrasonic testicular volume was 12.88 ml (range 3–24 ml), which was smaller than that previously reported for normal men and larger than that previously reported for infertile men. The ultrasonic testicular volume was inversely correlated to the score. Score 4 was given to 46% of the testes (median score, 4), and the score distribution was different from that reported in normal men (median, 2) and in infertile men (median, 3). In all, 9 testes contained CIS tubules, and 8 of these were given score 4; 1 testis with CIS in only 5% of the tubules was given score 3. The predictive value of score 4 for the testis to contain CIS was 22.2%, and the predictive value of a score different from 4 that the testis would not contain CIS was 97.6%. We conclude that a large percentage of contralateral testes in men with unilateral testicular cancer have an abnormal echotexture and that CIS is most likely found in testes given score 4 by ultrasound.
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Lenz, S., Skakkebæk, N.E. & Hertel, N.T. Abnormal ultrasonic pattern in contralateral testes in patients with unilateral testicular cancer. World J Urol 14, S55–S58 (1996). https://doi.org/10.1007/BF00182067
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DOI: https://doi.org/10.1007/BF00182067