Purpose: Ipsilateral testicular catch-up growth has been reported to occur in approximately 80% of adolescents with varicoceles following unilateral varicocelectomy. We have been observing not only catch-up growth, but hypertrophy (left at least 10% larger than right testicular volume) in some adolescents postoperatively. To our knowledge this phenomenon has not been previously described. We assess the incidence of left testicular hypertrophy following ipsilateral varicocele ligation and whether it is related to age at operation and/or procedure performed.
Materials And Methods: We reviewed the records of 42 patients who underwent unilateral left varicocelectomy for asymptomatic varicoceles. Testicular volume was determined before and after surgery, and all patients were followed for a minimum of 6 months. Indication for surgery was ipsilateral left testicular hypotrophy in 23 cases, grade 2 to 3 varicocele with palpably softer ipsilateral left testicle in 5, grade 3+ varicoceles in 12, an exaggerated response to gonadotropin-releasing hormone stimulation test in 1 and persistent pain in 1. Average patient age at operation was 14.7 years (range 9 to 22) and average followup was 22 months (range 6 to 84). Patients were stratified according to Palomo versus modified Ivanissevich technique and age at operation. Testes were measured using the Takihara ring orchidometer with relative volume of the left testis expressed as a percentage of the right testis. Results were compared in different age groups as well as by procedure performed to correct the varicocele using chi-square analysis.
Results: Left testicular hypertrophy developed in 13 of 32 patients (43.8%) who underwent a Palomo repair and in 3 of the 10 (30%) who underwent a modified Ivanissevich repair. When compared by age at operation, 8 of 20 patients (40%) 14.7 years old or younger had left testicular hypertrophy compared to 8 of 22 (36.4%) older than 14.7 years. Differences between these groups were not statistically significant.
Conclusions: Ipsilateral testicular hypertrophy occurs in a substantial number of adolescents following varicocele ligation. This phenomenon does not seem to be dependent on age at surgery or type of varicocele repair.
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