histopatologia del testiculo

1. APARATO GENITAL MASCULINO CAPITULO 21 ROBBINS 7a ED

10. Figure 21-20 A, Normal testis shows tubules with active spermatogenesis. B, Testicular atrophy. The tubules show Sertoli cells but no spermatogenesis. There is thickening of basement membranes and an apparent increase in interstitial Leydig cells. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

18. Figure 21-21 Acute epididymitis caused by gonococcal infection. The epididymis is replaced by an abscess. A normal testis is seen on the right. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

22. Figure 21-22 Torsion of the testis. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

29. Figure 21-23 Seminoma of the testis appears as a fairly well circumscribed, pale, fleshy, homogeneous mass. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

30. Figure 21-24 Seminoma. A, Low magnification shows clear seminoma cells divided into poorly demarcated lobules by delicate septa. B, Microscopic examination reveals large cells with distinct cell borders, pale nuclei, prominent nucleoli, and a sparse lymphocytic infiltrate. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

33. Figure 21-25 Embryonal carcinoma. In contrast to the seminoma illustrated in Figure 21-23, the embryonal carcinoma is a hemorrhagic mass. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

34. Figure 21-26 Embryonal carcinoma shows sheets of undifferentiated cells as well as primitive glandular differentiation. The nuclei are large and hyperchromatic. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

38. CA EMBRIONAL

40. TUMOR SACO VITELINO

42. Figure 21-27 Choriocarcinoma shows clear cytotrophoblastic cells with central nuclei and syncytiotrophoblastic cells with multiple dark nuclei embedded in eosinophilic cytoplasm. Hemorrhage and necrosis are prominent. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

46. Figure 21-28 Teratoma of the testis. The variegated cut surface with cysts reflects the multiplicity of tissue found histologically. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier

47. Figure 21-29 Teratoma of the testis consisting of a disorganized collection of glands, cartilage, smooth muscle, and immature stroma. Downloaded from: Robbins & Cotran Pathologic Basis of Disease (on 4 September 2006 04:05 AM) © 2005 Elsevier