Testicular Regression Syndrome Presenting as a Nonpalpable Undescended Testis in Adulthood: A Case Report and Literature Review. - Ngowi, Bartholomeo Nicholaus; Mremi, Alex; Lekei, Ester; Mbwambo, Orgeness; Lodhia, Jay; Gardner, Ulysses (Case Reports in Urology, 2026)