Review/Oorsig Volume 22, Issue 04 - Page 7

Volume 22 • Issue 04 • 2018 Coxiella burnetti (Q-fever). Figure 9 - umbilical torsion with the twisted umbilicus accompanied by congestion, hemorrhage and edema.jpg Brucellosis (Brucella abortus, Brucella melitensis). Figure 10 - Brucella placentitis exhibiting necrotic cotyledons and focal inter-cotyledonary thickening and opacity adjacent to the right ventral cotyledon Placental lesions are not uniform with some cotyledons being affected while others appear normal. Affected cotyledons or portions of them are necrotic, soft, yellow-gray, and may be covered with the sticky, odorless, brown exudate. The distribution and severity of inter- cotyledonary lesions are also variable, being most prominent adjacent to the cotyledons. Affected inter-cotyledonary areas are thickened with yellow gelatinous fluid, opaque and tough, and the normal smooth glistening surface takes on an appearance resembling yellow-to-gray leathery appearance. Figure 11 - copious intercotyledonary exudate with placental thickening and involvement of the adjacent cotyledon In Coxiella burnetti associated abortions lesions are usually restricted to the placenta with no characteristic fetal lesions present. Affected placentae are usually thickened and leathery, with multifocal to confluent areas of mineralization. Exudate is usually extensive and off-white creamy in appearance being most prevalent in the inter-cotyledonary zones with variable cotyledonary involvement. *Pathology presentation is primarily inter- cotyledonary with lesser cotyledonary involvement. Chlamydia abortus / pecorum. Figure 12 *Pathology presentation is primarily cotyledonary with lesser inter-cotyledonary involvement. Figure 13 7