A 4-year-old boy is brought to the pediatric clinic for a routine checkup. During the physical examination, the nurse notes that one testicle is not palpable in the scrotum. What is the most important assessment the nurse should perform?

When a testicle is not palpable in the scrotum during a routine pediatric examination, the condition is termed cryptorchidism or an undescended testis (UDT). This is the most frequent congenital anomaly of the male genitourinary tract, with an incidence of approximately 1 to 9 percent in full-term male infants ^[3]. The most important and immediate nursing action is to determine the location of the undescended testicle. This directly guides the urgency of referral and management, as the testis may be located anywhere along the normal path of descent, from the abdomen to the inguinal canal, or it may be ectopic ^[3].

The correct assessment is to palpate the inguinal canal and abdomen. This technique aims to differentiate between a retractile testis (which can be manipulated into the scrotum and is a normal variant), a truly undescended testis in the inguinal canal, and a non-palpable testis that may be intra-abdominal or absent. A meta-analysis on imaging for nonpalpable testicles highlights that the primary clinical challenge after a negative scrotal exam is to ascertain whether the testis is present and, if so, whether its position is inguinal or abdominal ^[4]. A thorough physical examination, including palpation of the inguinal region and, if possible, the lower abdomen, is the critical first-line assessment that determines subsequent diagnostic and therapeutic steps.

While other assessments have value, they are not the most critical initial step for this specific finding. Checking for an inguinal hernia is relevant because a patent processus vaginalis is commonly associated with UDT , but it is a secondary finding. The primary objective is to locate the testis itself. Assessing for urinary tract infection symptoms or evaluating general growth milestones are important components of a routine checkup but do not directly address the immediate anatomical concern of the absent testicle. Delaying the localization of the testis can lead to significant long-term complications. Guidelines emphasize that timely diagnosis and surgical intervention (orchidopexy) are crucial to mitigate risks of infertility, testicular malignancy, and psychological distress . The physical examination to locate the testis is the pivotal first step in preventing these delays.