Discussion- Answer choices are in order of Hernias on L 75-90%, on R 10%, bilateral 5%. 10. Thymus Displaces the trachea- False Can be mistaken for right upper lobe pneumonia- True Peak weight of the thymus is at puberty- True Commonly seen on CXR 5 years old- False Discussion- Normally located enlarged thymus does not displace trachea or SVC. Only common to see on CXR < 2 years old. 11. Pediatric neck lesions are most commonly Congenital/ inflammatory- True Vascular- False Malignant- False Lymphatic malformation- Discussion- 80% are congenital or inflammatory. 12. Complication stubbed toe in kid Osteo- True Epidermal inclusion cyst- False Discussion- Epidermal inclusion cyst could only form from a puncture wound in which skin gets inside of the bone. 13. True of holoprosencephaly Sylvian fissures displaced posteriorly by hypoplastic frontal lobes- False Corpus callosum replaced by fused anterior frontal lobes- True Fused frontal lobes- True Thalamic fusion- True Discussion- Sylvian fissures displaced anteriorly. Fused frontal lobes. Failure of basal forebrain structures to cleave. Severity of malformation related to degree of anterior brain development Alobar (least differentiated)- Absent IHF/falx and CC with pancake-like mass of brain
Discussion- Answer choices are in order of Hernias on L 75-90%, on R 10%, bilateral 5%. 10. Thymus Displaces the trachea- False Can be mistaken for right upper lobe pneumonia- True Peak weight of the thymus is at puberty- True Commonly seen on CXR 5 years old- False Discussion- Normally located enlarged thymus does not displace trachea or SVC. Only common to see on CXR < 2 years old. 11. Pediatric neck lesions are most commonly Congenital/ inflammatory- True Vascular- False Malignant- False Lymphatic malformation- Discussion- 80% are congenital or inflammatory. 12. Complication stubbed toe in kid Osteo- True Epidermal inclusion cyst- False Discussion- Epidermal inclusion cyst could only form from a puncture wound in which skin gets inside of the bone. 13. True of holoprosencephaly Sylvian fissures displaced posteriorly by hypoplastic frontal lobes- False Corpus callosum replaced by fused anterior frontal lobes- True Fused frontal lobes- True Thalamic fusion- True Discussion- Sylvian fissures displaced anteriorly. Fused frontal lobes. Failure of basal forebrain structures to cleave. Severity of malformation related to degree of anterior brain development Alobar (least differentiated)- Absent IHF/falx and CC with pancake-like mass of brain
2008-2012-Combined-Written-Recalls.docx