Slide 79.Ectopic gestation, Fallopian tube

A. Brief Descriptions:

  1. Implantation of the fetus in any sites other than normal uterine location, most common in the fallopian tubes (90%), rarely in the ovary or abdominal cavity.

B. Gross Findings:

  1. The fallopian tube shows engorgement in ampulla portion with old blood clots in the lumen.

  2. Tubal rupture may be seen.

C. Micro Findings

  1. Blood clot and chorionic villi in the lumen of the tube.

  2. The villi with its pale-staining core of myxoid tissue covered with a thin (outer) layer of syncytiotrophoblasts & (inner) cytotrophoblasts.

  3. Thickening and hemorrhage of the tubal wall in tubal pregnancy.

D. Others:

  1. Rupture of a tubal pregnancy constitutes a medical emergency.

E. Reference:

  1. Robbins Pathologic Basis of Disease, 6th ed.  P.1079-1080.




Fig. 79-1 (LP)Blood clot and gestational tissue in the tube.




Fig. 79-2 (LP)Gestational tissue and hemorrhage.




Fig. 79-3 (HP)Chorionic villi and trophoblasts.