STUNTED CYEMATA. 



147 



and pigmented with round cell infiltration of the sur- 

 rounding tissue. 



(6) Decidua locally infiltrated. This and the chononic 

 changes suggest lues. 



No. 104. 



(1) J. P. West, Bellaire, Ohio. 



(2) A 35X35X15 mm. Embryo elongated, 12 mm.; 

 if curled upon itself, CR about 7 mm. 



(3) Last menstrual period began May 7, and abortion 

 took place June 11. 



(4) The villi of the chorion appear to be atrophic, and 

 are absent on one side of the ovum. After carefully cutting 

 in half, the ovum was found to be filled with magma, 

 partly reticular and partly granular. On one side is an 

 embryo with straightened head and atrophic extremities. 

 This," with a piece of chorion to which it was attached, 

 was cut into serial sections. 



(5) The main walls of the chorion are fibrous; the 

 amnion is intact. The brain and spinal cord of the embryo 

 are dilated and dissociated, probably macerated also. 

 The outlines of the organs and body-cavity are obliterated. 

 The boundaries of the liver can no longer be determined. 

 The tissues of the body are generally dissociated, and they, 

 with the umbilical cord and magma, are infiltrated with 

 migrating cells. The heart, large veins, and aorta are 

 greatly distended with blood. The head is atrophic. 



(6) 'Hydatiform degeneration. Decidua absent. 



No. 122. 



(1) J. W. Williams, Baltimore, Maryland. 



(2) A 20X16X6 mm.; B 5 mm. 



(3) "Last period began April 19, and the abortion took 

 place June 23. Continuous bleeding for eight days before 

 the abortion." 



(4) The thin transparent and fibrous chorion is covered 

 with a few scattered villi of irregular length. The embryo 

 is atrophic, with club head, large heart, stump tail, and 

 no limb-buds. 



(5) The nervous system is greatly distended and disso- 

 ciated. The front of the head and the branchial arches 

 are atrophic. The liver is small, the Wolffian body well 

 marked, and the body-cavity sharply defined. The large 

 veins of the body and of the liver are greatly distended 

 with blood, the aorta being much enlarged and empty. 

 The tissues of the entire embryo are partly filled with loose 

 round cells. The amnion is macerated. 



(6) Decidua and chorion absent. Hydatiform degenera- 

 tion of chorion. 



No. 132. 



(1) R. Munson, Washington, District of Columbia. 

 (Sent by Dr. Lamb.) 



(2) A 42X30 mm.; B 15 mm. 



(3) The woman menstruated last between August 15 

 and 20, and aborted November 12. 



(4) The chorion is atrophic, with but few villi. The 

 embryo has a stub head and the extremities on the right 

 side are atrophic, while those on the left appear to be 

 normal. 



(5) The organs of the embryo are about normal m 

 form and structure. The cord and brain are slightly dis- 

 sociated. There is a small number of migrating cells in 

 the tissues of the body, as well as within the peritoneal 

 cavity. 



(6) Chorion and decidua absent. 



No. 135. 



(1) Wm. E. Moseley, Baltimore, Maryland. 



(2) A 105X65X65 mm.; B 9mm. 



(4) The ovum is fairly smooth, its walls very thin and 

 lacking in villi. It was completely filled with a gelatin- 

 like mass, neither fibrous nor granular. Within this mass 

 there is an atrophic embryo attached to a thin umbilical 

 cord. The entire chorion is lined with amnion. The head 

 of the embryo is atrophic and the body shaped like a grain 



of wheat. The extremities are more rudimentary on the 

 right than on the left side. 



(5) Sections of the embryo show the cord distended, 

 the brain almost completely destroyed, and the mesoderm 

 of the top of the head converted into a mass of mucoid 

 tissue. The head end of the chorda is greatly hypertro- 

 phied, being converted into a mucoid tumor. On either 

 side of this tumor are two large cartilages of normal struc- 

 ture. Farther cranialward, buried deep in the mesoderm, 

 are two additional pearl-like bodies, which, on account of 

 their appearance, as well as- by the fact that they are 

 encircled by an oval zone of pigmented cells, are identified 

 as the lenses of the eyes. These bodies have within them 

 lens fibers, making them appear much like the lenses of 

 amphibians. The front end of the head is necrotic. 

 The heart is convoluted, its outline obscure and distended 

 with a mass of blood-cells. The outline of all of the ab- 

 dominal organs and of the peritoneal cavity can be deter- 

 mined, although the tissues are considerably obscured by 

 the great quantity of round cells within them. The 

 entire wall of the chorion is very thin and lined throughout 

 with a delicate fused amnion. The villi have almost dis- 

 appeared, and in their place are islands of necrotic syn- 

 cytium covered with a hyaline layer of fibrin. The whole 

 chorion and decidua are infiltrated with leucocytes, which 

 form small abscesses at points. 



(6) Marked decidual infiltration and fibrosis; marked 

 hydramnios. 



No. 137. 



(1) William T. Watson, Baltimore, Maryland. 



(2) A 65X50X30 mm.; B 16mm. 



(3) "Last period commenced September 26. Abortion 

 December 21." 



(4) The ovum is nearly covered with long and well- 

 developed villi, having a bare area on one side. The 

 ccelom contains no magma. The embryo is broken from 

 the cord and is macerated on its ventral end. The head 

 is atrophic, but the arms and legs are normal. At the 

 middle of the umbilical cord there is a marked swelling 

 seen in other specimens of this kind. 



(5) Sections of the chorion show the villi to be normal 

 in form, but somewhat hyaline in structure and without 

 blood-vessels. There is a considerable quantity of tropho- 

 blast. The thickened umbilical cord has within it a 

 cavity partly filled with a reticular substance, homog- 

 enous in appearance and more intensely stained than the 

 surrounding tissues. Within the cord there are large 

 blood-vessels, greatly distended with blood-cells, which 

 extend through the walls into the surrounding tissues. 

 10 mm. from the attachment of the cord to the chorion 

 is the umbilical vesicle. It measures 3X2 mm.; its walls 

 are degenerated and its cells, which are necrotic, fill its 

 cavity The stem of the umbilical vesicle reaches but 

 halfway to the umbilical cord. The central nervous 

 system of the embryo is irregularly distended and dis- 

 sociated, the spinal cord being roughly segmented to 

 correspond with the vertebra;. The liver is necrotic and 

 filled with blood. The heart is collapsed and dissociated. 

 The large blood-vessels are collapsed and empty, while the 

 small ones are filled with blood. The outlines of the 

 abdominal organs are pretty sharp, the tissues fairly free 

 from migrating cells. Most of the epidermis has fallen 

 off the embryo, but where it remains intact it shows areas 

 of irregular thickening. 



(6) Early hydatiform degeneration. Decidua absent. 



No. 174. 



(1) E C. Gibbs, Baltimore, Maryland. 



(2) A 35X25X25 mm.; B 13 mm. 



(3) Last period January 11, and bleeding five weeks 

 later, which continued until the eighth week, when the 

 abortion followed. 



(4) The ovum is smooth, having but few villi, and is 

 filled with granular magma. 



