APPENDIX TESTIS WITH ISCHEMIC DAMAGE Figure 11-35 APPENDIX TESTIS WITH ISCHEMIC DAMAGE A segment of the appendix testis is fibrotic with dystrophic calcification, likely the result of a prior episode of incomplete torsion with consequent ischemic damage. More

NORMAL APPENDIX TESTIS Figure 11-33 NORMAL APPENDIX TESTIS The structure projects from the testicular surface with a sawtooth profile. More

INFARCTED APPENDIX TESTIS Figure 11-34 INFARCTED APPENDIX TESTIS There is a discrete hemorrhagic nodule. More

NORMAL APPENDIX EPIDIDYMIS Figure 11-36 NORMAL APPENDIX EPIDIDYMIS A dilated tubular structure that is lined by undulating epithelium projects from the head of the epididymis. Inset shows the lining epithelium, with occasional ciliated cells and finely vacuolated cytoplasm. More

MAJOR TESTICULAR APPENDAGES Figure 11-32 MAJOR TESTICULAR APPENDAGES From left to right: the paradidymis (organ of Giraldes), appendix epididymis, and appendix testis. (Modified from Fig. 10 of Algaba F, Mikuz G, Boccon-Gibod L, et al. Pseudoneoplastic lesions of the testis and paratesticular str... More

TESTICULAR EMBRYONIC REMNANTS Figure 2-10 TESTICULAR EMBRYONIC REMNANTS A diagram of the adult testis shows the location of remnants derived from mesonephric tubules (paradidymis, superior and inferior ductuli aberrantes [or vasa aberrantes]), the mesonephric duct (the appendix epididymis), and t... More

EMBRYOLOGY OF TESTIS Figure 2-9 EMBRYOLOGY OF TESTIS Those mesonephric tubules (left) that persist are known as the epigenital tubules. They connect with the tubules of the rete testis and become the efferent ductules of the epididymis (right), comprising the head of the epididymis. The remaining... More

INFARCTION OF TESTIS IN UTERO Figure 11-31 INFARCTION OF TESTIS IN UTERO Left: Virtually the entire testis has been replaced by well-vascularized fibrous tissue containing hemosiderin-laden macrophages. The appendix testis (top) is intact. Right: Prominent calcifications, hemosiderin-laden macro... More

MULTICYSTICMESOTHELIOMA Figure 4-7 MULTICYSTICMESOTHELIOMA This example in the appendix shows multiple, smaller, clear fluid-filled cysts involving the appendiceal tip. More