and Soft-Tissue Disorders
◊ Actinomycotic infections are polymicrobial! Pathogenesis: trauma / surgery / foreign body → disruption of mucosal barrier → bacterial entry into deep tissues → fibrotic lesion spreading beyond fascial planes → abscess…
GENERAL RADIOLOGY
and Ocular Disorders
= NO-FLOW / LOW-FLOW VASCULAR MALFORMATION= LYMPHATICOVENOUS MALFORMATION Prevalence: 3.5÷100,000; 1–2% of orbital childhood masses; 4–8% of expanding pediatric orbital lesions; 25% of vasculogenic orbital lesions Origin: arises from a pluripotent venous…
Intracranial Disease: Benign Tumors of the Central Nervous System, Arteriovenous Malformations, and Trigeminal Neuralgia
Fig. 1 (a) Axial T1-weighted post-contrast MRI demonstrates a homogeneously enhancing meningioma in the frontal falx cerebri causing mild mass effect on the adjacent frontal gyri (arrow). (b) Axial T1-weighted…
Brain Tumors
Fig. 1 A patient with standard-risk medulloblastoma. This patient was simulated using a 1.5 mm CT slice thickness. Note the coverage of the cribriform plate as part of the target…
Delineation of the Neck in Head and Neck Carcinomas
Surgical neck management Definition Radical neck dissection En bloc removal of neck levels I–V, sternocleidomastoid, internal jugular vein, spinal accessory nerve (CN XI) Modified radical neck dissection Removal of neck…
Cavity Cancer
Fig. 1 Diagram illustrating oral cavity subsites Oral tongue: The oral tongue is the most common site of carcinoma within the oral cavity. It consists of the anterior two-thirds of…
