This is mostly like a picture of filariasis (infection by a parasite, most likely a nematode) disrupting the lymphatic system causing elephantiasis. It results in hydroceles of the scrotum and can result in large tumors in the testicles. The operation to remove them is very unpleasant so lots of people end up putting off the operation for as long as possible. There has been a documented case of an individual with a scrotum weighing 46kg (101lbs).

There's a picture of someone using his scrotum as a writing desk because it got so large. I'll try and find it because it seems germane to the topic.

Chased down more information while looking this up. There was a Scottish Physician by the name of James Esdaile who was working in India in the 1830s on the use of "mesmerism" (hypnotism) in surgical procedues. What follows has been quoted from a description of his book (it's quite rare):

"Esdaile's first patient, a Hindu convict, suffered from a double hydrocele of considerable proportions on his scrotum. This kind of condition, similar to elephantiasis, was then common in eastern India. No cure was known and surgical removal of these tumours was rare, and widely dreaded at a time when no effective anaesthetic was available. The tumorous growth of one of Esdaile's patients weighed 103 pounds and measured 7 feet in circumference and 2 feet round its neck." (Source contains no additional relevant information)

Edit: Found a copy of his book, 1st hand account (sorry it's an image of a pdf because it won't copy plain text correctly, and I am too lazy to OCR).

Text version taken from J Esdaile's book:

"Oct. 25th. - Goo­roo­chuan Shah, a shop-kee­per, aged 40. he has got a "­mons­ter tu­mour," which pre­vents him from mo­ving; its great weight, and his ha­ving used it for a wri­ting-­desk for many years, has pres­sed it into its pre­sent sha­pe. His pulse is weak, and his feet oe­de­ma­tous, which will make it very ha­zar­dous to at­t­empt its re­mo­val; bit with such an ap­pen­dage life is li­te­r­ally a bur­then. He be­came in­sen­si­ble on the fourth day of me­me­ri­sing, and was drawn with the mat­tress to the end of the bed (my usual mode of pro­cee­ding:) two men then held up the tu­mour in a sheet, pul­ling it for­ward at the same time, and, in the pre­sence of Mr. Ben­nett, I re­mo­ved it by a cir­cu­lar in­ci­sion, ex­pe­di­tion being his only sa­fe­ty. The rush of ve­nous blood was great, but for­tu­na­tely soon ar­res­ted; and, after tying the last ves­sel, the mat­tress was again pul­led back upon the bed with him upon it, and at this mo­ment he awo­ke. The loss of blood had been so great that he im­me­dia­tely fell into a fain­ting state, and it took a good while to re­move him. On re­co­ve­r­ing he said that he awoke while the mat­tress was being pul­led back, and that nothing had di­stur­bed him. The tu­mour weig­hed eighty pounds, and is pro­ba­bly the lar­gest ever re­mo­ved from the human body. I think it ex­tre­mely li­kely that if the cir­cu­la­tion had been hur­ried by pain and strug­g­ling, or if the shock to the sys­tem had been in­cre­a­sed by bo­dily and men­tal an­guish, the man would have bled to dea­th, or never have ral­lied from the ef­fects of the ope­ra­ti­on. But the sud­den loss of blood was all he had to con­tend against; and, though in so weak a con­di­tion, he has sur­moun­ted this, and gone on very well."

Final Edit: I regret to inform R/WTF that it seems unlikely that I'll be able to find the image. It did exist and was transmitted along with the text of the manuscript to J. Esdaile's brother in London, who arranged for the book (Mesermism in India) to be published by Longman and Co (now a divison of Pearson Education). The thing is they decided to withhold printing the drawings because they believed they would shock the sensibilities of any readers and it would make the cost of printing the book prohibitively expensive. The plates remained in the care of Longman Co., presumably at their Paternoster Row offices and were likely destroyed alongside much of the office during the Blitz. It doesn't appear like they have ever been printed. If someone works for Pearson Education or better yet used to work for Longman they might have a better idea of where they might be. It's possible the plates will have been donated to a research/education institute or returned to the Esdaile estate prior to the blitz, but if so I can find no mention of it online. I've basically hit a dead-end.

tl;dr- I failed, but it did used to exist.