Light transmission test

Transillumination test is a method for examining diseases. Clinically used for the differential diagnosis of hydrocele and oblique hernia. The method is that the light of the flashlight is directly under the scrotum in the dark room, for example, the liquid contained in the scrotum is transparent, otherwise it is opaque. The best testicular self-examination time is after bathing, because any local tension will cause the scrotum to contract and affect the examination. After bathing, the scrotum skin is relaxed, and it is easier and more accurate to check. Basic Information Specialist classification: growth and development check classification: other inspection Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: On the surface of the scrotum, the tissues in the skin and scrotum were bright red, and the testicles were black-shaded. Positive: The light can pass through the cyst, and the scrotal skin is still bright red and can be diagnosed as hydrocele; the cyst is not easy to transmit light, and the darkness of the tumor is oblique. Tips: The examiner can judge the inspection results more accurately in a relatively dark environment. Make the inspection results more accurate and reliable. Normal value On the surface of the scrotum, the tissues in the skin and scrotum were bright red, and the testicles were black-shaded. Clinical significance Abnormal results: the light can pass through the cyst, the scrotal skin is still bright red can be diagnosed as hydrocele; the cyst is not easy to transmit light, and the darkness of the tumor is oblique. People in need of examination: patients with hydrocele or oblique hernia. Positive results may be diseases: infantile inguinal hernia, inguinal hernia, precautions for elderly inguinal hernia Requirements for inspection: 1. Pay attention to the patient's age: If the patient is an infant, sometimes even if the inguinal hernia occurs and the contents of the scrotum enter the scrotum, the scrotal light transmission test is still a positive result, that is, the flashlight passes through the scrotum and the contents of the sputum. Bright, orange-red, making it easy for doctors to misdiagnose the swelling of the scrotum into pediatric testicular hydrocele, rather than the inguinal hernia. The reason for this result is that the scrotum skin of infants and young children is thinner and more tender, and the tissue that breaks into the scrotum is also thinner and less. Therefore, when the scrotum is tested for light transmission, the light is easily passed, resulting in misdiagnosis. Therefore, the results of the scrotum light transmission test for infants and young children should be analyzed in detail, and the test should be repeated several times if necessary. At the same time, you should pay attention to the changes in the volume of the scrotum and sputum contents when the infant is crying, in order to make a correct conclusion. 2, pay attention to the light-proof operation: If the light in the inspection environment is brighter, the light from the flashlight through the scrotum will appear darker, which is not conducive to the observation of the light transmission test results. Therefore, when the scrotum light transmission test is performed, the indoor headlights can be turned off or the curtains can be pulled up, and the examiner can more accurately judge the inspection result in a relatively dark environment. At the same time, the use of opaque hard paper or dark hard paper rolled into a cylindrical shape on the surface of the scrotum skin is also beneficial to reduce the brightness of the observed part, so that the inspection results are more accurate and reliable. On the contrary, if the paper tube transmits light, it affects the observation effect. 3, pay attention to the position of the testicles: in the scrotum light test for infants and young children, in addition to observing the light transmission through the scrotum, should also pay attention to the position of the testicles. This is because, on the one hand, the position of the testicle affects the transmittance of the scrotum; on the other hand, in patients with inguinal hernia, the testicle is located behind the contents of the sputum, at which point the hand can easily reach the back of the contents of the sputum. Substantial testicles. If you feel that the testicle is in the middle of the effusion and the scrotal light transmission test is positive again, it is a pediatric hydrocele, not an inguinal hernia. Inspection process The skin of the scrotum is thinner, the muscles are thinner, the tissue is looser, and the light is easily transmitted. If the flashlight is irradiated from the scrotum under the scrotum, the skin in the scrotum and the scrotum are bright red, and the testicles are black-shaded. Because the fluid in the hydrocele is liquid, it is also light-transmissive. Therefore, after the flashlight is irradiated, the light can pass through the cyst. The skin of the scrotum is still bright red, which is called the light transmission test. The inguinal hernia is the intestine. , there is a turbid intestinal content, it is not easy to transmit light, the tumor is dark, that is, the light transmission test is negative. Not suitable for the crowd Inappropriate population: patients with testicular trauma. Adverse reactions and risks Nothing.