TESTICULAR MEDIASTINUM WITH RETE TESTIS Figure 2-21 TESTICULAR MEDIASTINUM WITH RETE TESTIS The dense connective tissue of the mediastinum contains the branching channels of the rete testis. More

GONADOBLASTOMA AND UNDIFFERENTIATED GONADAL TISSUE Figure 7-7 GONADOBLASTOMA AND UNDIFFERENTIATED GONADAL TISSUE A: Confluent nests of gonadoblastoma (diffuse or expansile pattern), resembling germinoma on low power, are associated with classic nests of gonadoblastoma (top and bottom right). B: ... More

DEEP ANGIOMYXOMA Figure 8-91 DEEP ANGIOMYXOMA An ill-defined mass of myxoid tissue fills the paratesticular region and extends to the scrotal skin (top). Note testis at bottom. (Courtesy of Dr. J. C. Iezzoni, Charlottesville, VA) More

EPITHELIOID ANGIOSARCOMA OF SOFT TISSUE METASTATIC TO TESTIS Figure 10-16 EPITHELIOID ANGIOSARCOMA OF SOFT TISSUE METASTATIC TO TESTIS Plump tumor cells forming luminal spaces and sometimes containing erythrocytes invade between and destroy seminiferous tubules. More

EMBRYONAL RHABDOMYOSARCOMA OF SOFT TISSUE METASTATIC TO TESTIS Figure 10-19 EMBRYONAL RHABDOMYOSARCOMA OF SOFT TISSUE METASTATIC TO TESTIS Small, ovoid to elongated cells invade between seminiferous tubules. More

NODULAR PROLIFERATION OF CALCIFYING CONNECTIVE TISSUE OF THE RETE TESTIS Figure 11-56 NODULAR PROLIFERATION OF CALCIFYING CONNECTIVE TISSUE OF THE RETE TESTIS The channels of the rete testis contain polypoid excrescences of connective tissue that are focally calcified. (Fig. 1 from Nistal M, Pani... More

ROSAI-DORFMAN DISEASE Figure 11-65 ROSAI-DORFMAN DISEASE The parenchyma is replaced by yellow, bulging tissue but retains the lobular configuration of the testis. (Fig. 1 from Azoury FJ, Reed RJ. Histiocytosis: report of an unusual case. N Engl J Med 1966;274:928-30.) (Courtesy of Dr. R. J. Reed,... More

CALCIFYING FIBROUS PSEUDOTUMOR Figure 11-78 CALCIFYING FIBROUS PSEUDOTUMOR Dense fibrous tissue is present, with scattered, round deposits of calcium. More

SPLENIC-TESTICULAR FUSION, CONTINUOUS TYPE Figure 11-105 SPLENIC-TESTICULAR FUSION, CONTINUOUS TYPE Splenic tissue forms an intraparenchymal mass in the upper pole of the testis. It was connected by a cord (truncated in this image) of splenic tissue to the normally located spleen. (Fig. 47.123 fr... More

SPLENIC-TESTICULAR FUSION Figure 11-107 SPLENIC-TESTICULAR FUSION Normal splenic tissue is separated from the testis by a fibrous capsule. More

SPINDLE CELL LIPOMA Figure 8-97 SPINDLE CELL LIPOMA Cytologically bland spindle-shaped cells are within fibrous tissue amid adipose tissue. More

OVOTESTIS Figure 2-5 OVOTESTIS Aberrant cell signaling may result in an ovotestis with peripheral ovarian tissue (top) containing numerous primordial follicles and central testicular tissue (bottom). More

TERATOMA, POSTPUBERTAL TYPE Figure 4-169 TERATOMA, POSTPUBERTAL TYPE A: This tumor contains pigmented retinal-type epithelium. B: Thyroid tissue is present. C: Prominent meningeal tissue with numerous psammoma bodies is seen. More

TUNICA ALBUGINEA AND TUNICA VASCULOSA Figure 2-18 TUNICA ALBUGINEA AND TUNICA VASCULOSA A layer of flat to cuboidal mesothelium lines the surface of the dense fibrous tissue of the tunica albuginea. The innermost aspect of the tunica albuginea consists of a thin layer of loose connective tissue t... More

ADRENAL CORTICAL REST Figure 11-20 ADRENAL CORTICAL REST Left: A small, round, thinly encapsulated nodule of adrenal cortical tissue is seen in the paratesticular soft tissue (top) adjacent to a testis with embryonal carcinoma (bottom). Right: Higher magnification shows an encapsulated nodule of... More

POSTCHEMOTHERAPY TERATOMA Figure 4-226 POSTCHEMOTHERAPY TERATOMA The cut surface shows innumerable cysts with intervening tan and pink tissue. More

ANASTOMOSING HEMANGIOMA Figure 8-77 ANASTOMOSING HEMANGIOMA This anastomosing hemangioma involves a large blood vessel in the paratesticular soft tissue. More

WELL-DIFFERENTIATED LIPOSARCOMA Figure 8-98 WELL-DIFFERENTIATED LIPOSARCOMA This orchiectomy specimen shows nodular adipose tissue in the spermatic cord. More

PREPUBERTAL-TYPE TERATOMA Figure 5-15 PREPUBERTAL-TYPE TERATOMA Organoid pancreatic differentiation consists of ducts, acinar tissue, and islets of Langerhans. More