A 7-year-old, 4.6 kg spayed female Korean short hair cat presented for health screening with occasional vomiting but had no significant medical history or remarkable clinical symptoms. Radiographic examination revealed bifurcation of the proximal part of the right 9th rib, extending into the caudo-ventral direction of the thoracic cavity without abnormalities in the vertebrae or other organs. This report highlights the importance of understanding radiographic findings and discusses the clinical significance of bifid ribs in veterinary medicine, especially during surgical procedures and trauma management. Advanced diagnostic imaging, including computed tomography, could provide potential valuable insights for detecting such rib anomalies and evaluating their significance. It is crucial that these types of rib anomalies are properly diagnosed in practice to ensure effective treatment and management. Further research into the genetic or developmental factors associated with rib anomalies in veterinary patients is recommended.

OBJECTIVE: To determine whether late preterm twin neonates have a more favorable perinatal outcome than singleton late preterm neonates. METHODS: We studied 401 late preterm births between 34+0 and 36+6 weeks of gestation, from January 2011 to December 2014 in our institution. We compared the maternal and neonatal characteristics and perinatal outcomes between singleton and twin pregnancies. Perinatal outcomes included Apgar score, admission to the neonatal intensive care unit (NICU) or special care nursery, duration of NICU stay, and the rate of composite morbidity (antibiotic use, hypoglycemia, hypocalcemia, hyperbilirubinemia requiring phototherapy, respiratory support, and respiratory distress syndrome). RESULTS: A total of 289 neonates were in the singleton group and 112 in the twin group. The twin group showed smaller mean birth weight despite of longer gestational age at delivery. In addition, there were significant differences in the indication of delivery and cesarean section rate between the 2 groups. Overall, the risk of composite morbidity was similar between 2 groups (odds ratio, 1.4; 95% confidence interval, 0.8 to 2.4). CONCLUSION: Our findings suggest that late preterm twins do not show a more favorable outcome than singleton late preterm births.
Apgar Score ; Birth Weight ; Cesarean Section ; Female ; Gestational Age ; Humans ; Hyperbilirubinemia ; Hypocalcemia ; Hypoglycemia ; Infant, Newborn ; Intensive Care, Neonatal ; Nurseries ; Perinatal Care ; Phototherapy ; Pregnancy ; Pregnancy, Twin* ; Premature Birth* ; Twins*