Parameniscal Cyst
Parameniscal Cyst KEY FACTS Imaging • Cystic mass in continuity with horizontal meniscal tear Medial parameniscal cyst slightly more common than lateral parameniscal cyst • Meniscal tear forces synovial fluid or mucoid…
Chest Wall Lesion
Chest Wall Lesion DIFFERENTIAL DIAGNOSIS Common • Acute Rib Fracture • Healing Rib Fracture • Rib Metastases Less Common • Chest Wall Metastases • Hematoma • Lipoma • Elastofibroma Dorsi • Fibroma • Carcinoma, Male Breast • Gynecomastia • Accessory Breast…
Hypoechoic Subcutaneous Mass
Hypoechoic Subcutaneous Mass DIFFERENTIAL DIAGNOSIS Common • Lipoma • Vascular Anomaly • Epidermoid Cyst • Peripheral Nerve Sheath Tumor Less Common • Vascular Leiomyoma • Pilomatricoma • Fibroma • Glomus Tumor • Lymph Node • Hematoma • Abscess • Fat Necrosis • Rheumatoid…
Tarsal Tunnel Syndrome
Tarsal Tunnel Syndrome KEY FACTS Terminology • Entrapment neuropathy of tibial nerve and its branches (medial, lateral plantar nerves) on medial aspect of ankle Many causes of tarsal tunnel syndrome (TTS)…
Elbow Procedures
Elbow Procedures KEY FACTS Preprocedure • Indication Intraarticular aspiration of joint fluid or injection of contrast or medication Tendinosis or ligament injury treatment (dry needling, steroid injection, prolotherapy, autologous blood injection,…
Elbow Epicondylitis
Elbow Epicondylitis KEY FACTS Terminology • Tennis elbow (lateral epicondylitis), golfer’s elbow (medial epicondylitis) Imaging • Thickening, hypoechogenicity, fibrillar disruption ± hyperemia of common extensor tendon origin (CETO) or common flexor tendon…
Tendon Swelling
Tendon Swelling DIFFERENTIAL DIAGNOSIS Common • Tendinosis Less Common • Acute Proliferative Tenosynovitis • Acute Exudative Tenosynovitis • Chronic Tenosynovitis (Active) • Chronic Tenosynovitis (Inactive) • Gout/Pseudogout • Xanthoma • Amyloidosis ESSENTIAL INFORMATION Key Differential Diagnosis Issues • Need…
Thigh Muscles
Thigh Muscles TERMINOLOGY Abbreviations • Function (F), insertion (I), origin (O) IMAGING ANATOMY Compartment Anatomy • Compartmental anatomy is different from functional groupings • Thigh divided into anterior, medial, and posterior compartments Anterior…
Swollen Nerve
Swollen Nerve DIFFERENTIAL DIAGNOSIS Common • Nerve Entrapment • Nerve Sheath Tumor Less Common • Nerve Injury • Perineural Fibrosis • Immune-Mediated Peripheral Neuropathy • Fibrolipomatous Hamartoma • Intraneural Lipoma • Intraneural Ganglion • Metastases • Acromegaly • Charcot-Marie-Tooth Disease • Leprosy…
Soft Tissue Tumor Biopsy
Soft Tissue Tumor Biopsy KEY FACTS Terminology • Percutaneous biopsy of soft tissue tumor under US guidance Accurate, safer, and more cost-effective alternative to open biopsy for tissue diagnosis Preprocedure • To…
