Prenatal skull radiography and calvaria histogenesis in Uda and Yankasa breeds of sheep

The anterior fontanelle was opened and radiolucent in the second trimester; at the third trimester, the fontanelle began to shrink and finally closed at birth and became radiopaque. The borders of the orbit and the teeth were both radiolucent and undifferentiated at the second trimester and at the third trimester, and these regions became radiopaque at the second and third trimester, respectively. The histomorphology of the calvarium in the first-trimester foetus had three layers consisting of the mesenchymal and osteoblast cells; as the foetus ages within the second trimester, the mesenchymal cells were transformed into osteoblast, colonies, primitive bone spicules, matured bone spicules, and primitive trabeculae respective, in the third trimester, the primitive trabeculae developed into a matured trabeculae, in the day old, the matured trabeculae transforms into a primitive spongy bone. However, this process occurs earlier in Yankasa than in Uda. The histomorphology of the calvarium during foetal life is similar in the Uda and Yankasa. However, the stages of calvarium development occur earlier and faster in Yankasa than Uda of the same ages. This implies that foetal development and time of parturition could occur earlier in the Yankasa compared to the Uda breeds

The rapid growth of a pleomorphic adenoma of the parotid gland in the third trimester of pregnancy

<p>Abstract</p> <p>Introduction</p> <p>We report a case highlighting the multidisciplinary management of a giant pleomorphic adenoma of the parotid gland that showed rapid growth in the third trimester of pregnancy.</p> <p>Case presentation</p> <p>A 43-year-old Caucasian woman presented in her 32nd week of gestation with a tumor of the parotid gland. Ultrasonography of her neck showed a parotid lesion of 40 × 30 × 27.5 mm. A follow-up magnetic resonance imaging scan of the neck four weeks later revealed that the tumor had grown to 70 × 60 × 60 mm, reaching the parapharyngeal space with marked obstruction of the oropharynx of about 50%. After discussing the case with our multidisciplinary tumor board and the gynecologists it was decided to deliver the baby by caesarean section in the 38th week of gestation, and then to perform a surgical resection of the tumor.</p> <p>Conclusion</p> <p>Indications for early surgical intervention of similar cases should be discussed on an individual patient basis in a multidisciplinary setting.</p