Pictures of small granules on the testicular skin

Male testicular tumors are relatively rare, accounting for only 1% to 1.5% of male tumors, and have the highest incidence rate among all tumors in young men aged 15 to 34. Male testicular tumors are divided into two major categories: primary and secondary. Primary male testicular tumors can be divided into germ cell tumors and non-germ cell tumors. The former has an incidence rate of 90% to 95%, while the latter only accounts for 5% to 10%. According to the differentiation level of cells, germ cell tumors can be divided into two categories: seminoma and non-seminoma. The latter includes IVF embryonic carcinoma, teratocarcinoma, teratoma, choriosquamous epithelial carcinoma, yolk sac tumor, etc.

Causes:

Among the congenital factors, cryptic testis is the most common risk source for testicular cancer. In addition, family genetic factors, polymastia and gynecologic syndrome may also be related to the occurrence of testicular tumors in men. Among the acquired factors, testicular damage, long-term exposure to specific active zinc oxide, cadmium hydrochloride, long-term use of estrogen, and some viral infections or germ cell infections distributed system orchitis are all factors that lead to testicular tumors in men.

Medical imaging examination:

(1) Male testicular spermatogonia:

The specific manifestations of ultrasound are that the volume of male testicles is significantly increased, the edge contour of the lesion is clear, there are mostly uneven low-echo masses, the boundaries are relatively clear, and very few lesions have patchy strong echoes and small areas without echoes. The color Doppler examination results show that the lesions have a variety of blood signals, and some small lesions have scattered blood signals in the form of stripes and patches.

(2) Non-seminoma of the testicle in men:

Compound germ cell tumor, teratoma, blastoma, and embryonic carcinoma of test tube baby are all non-seminoma. The specific ultrasound manifestations of compound germ cell tumor are mainly multi-chamber mixed echoes, disordered structure, patchy strong echoes inside, irregular liquid shadows, and blurred boundaries. The color Doppler examination results show that there are various blood signals in the hard mass. The ultrasound manifestations of male testicular teratoma are mainly cystic and solid mixed echo masses, some of which have strong echoes, and the color Doppler examination results show that there are some strip-shaped blood signals in the solid part of the hard mass. The specific ultrasound manifestations of endodermal sinus tumors are mainly low-echo masses with fuzzy boundaries and many clusters of strong echoes inside. Color Doppler examination results show that the blood signals in the mass are relatively rich. The specific ultrasound manifestations of IVF embryonal carcinoma are mainly low-echo masses with fuzzy boundaries and uneven echoes inside. Color Doppler examination results show that the blood signals in the mass are slightly more diverse.