![Showing Blackening of penis and part of scrotum with appearing line of... | Download Scientific Diagram Showing Blackening of penis and part of scrotum with appearing line of... | Download Scientific Diagram](https://www.researchgate.net/publication/263581566/figure/fig1/AS:296389729898503@1447676226490/Showing-Blackening-of-penis-and-part-of-scrotum-with-appearing-line-of-demarcation-of.png)
Showing Blackening of penis and part of scrotum with appearing line of... | Download Scientific Diagram
![Two illustrations of the penis: the top one showing the arteries of the penis and the bottom one showing the veins of the penis - Media Asset - NIDDK Two illustrations of the penis: the top one showing the arteries of the penis and the bottom one showing the veins of the penis - Media Asset - NIDDK](https://www.niddk.nih.gov/media-assets/17540/N00120-H.jpg?imbypass=true)
Two illustrations of the penis: the top one showing the arteries of the penis and the bottom one showing the veins of the penis - Media Asset - NIDDK
I'm 13 and haven't hit puberty yet. There's this sort of line of wrinkle that sticks out on the back of my penis and I'm really worried and don't know what it
![Objective measurement of the degree of penile curvature was performed... | Download Scientific Diagram Objective measurement of the degree of penile curvature was performed... | Download Scientific Diagram](https://www.researchgate.net/publication/24199168/figure/fig1/AS:280325096787979@1443846119077/Objective-measurement-of-the-degree-of-penile-curvature-was-performed-on-standardized.png)
Objective measurement of the degree of penile curvature was performed... | Download Scientific Diagram
![Male perineum with labels for the scrotum, internal penis, perineum, nerves, blood vessels, tailbone, and anus - Media Asset - NIDDK Male perineum with labels for the scrotum, internal penis, perineum, nerves, blood vessels, tailbone, and anus - Media Asset - NIDDK](https://www.niddk.nih.gov/media-assets/18207/N01601-H.jpg?imbypass=true)