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Undescended testes, or cryptorchidism, occur in about 3% of newborns and can lead to infertility and a 100-fold increased risk of tumors.
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The paper describes undescended testes due to disruption of testicular descent (retentio testis or cryptorchidism), noting that affected testes can remain in the abdomen or inguinal canal, occurring in about 3% of newborns and declining to about 0.1% among recruits. It states that while retained or ectopic testes can perform endocrine function, they do not produce sperm because spermatogenesis requires a lower environmental temperature maintained by the scrotum. The author further reports that a misplaced testis is about 100 times more likely to be the site of tumors than a normally positioned one, with a limitation that this is presented as general pathology knowledge rather than data from a specific study. Relevance to endometriosis: it does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.
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References (13)
- Endometriosis demonstration for the Sampson theory by a human anomaly via openalex
- Experimental endometriosis via openalex
- The effect of estrone and progesterone on the growth of experimental endometriosis in rhesus monkeys via openalex
- W2003244697 via openalex
- W815827020 via openalex
- W2043834295 via openalex
- W2059493581 via openalex
- W2061315041 via openalex
- W2073194252 via openalex
- W2418403672 via openalex
- W2020807151 via openalex
- W1535481533 via openalex
- W1992599258 via openalex
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