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Ricci, Z.J., Stein, M.W., Koenigsberg, M. et al. Unusual sonographic appearance of a Leydig cell tumor of the testis. Pediatr Radiol 34, 177–178 (2004). https://doi.org/10.1007/s00247-003-1035-1
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DOI: https://doi.org/10.1007/s00247-003-1035-1