Abdominal Wall Mass DIFFERENTIAL DIAGNOSIS Common • Subcutaneous Lipoma • Incisional Hernia • Linea Alba Hernia • Groin Hernia Less Common • Spigelian Hernia • Lumbar Hernia • Paraumbilical Hernia • Umbilical Hernia • Endometrioma • Undescended Testis • Enlarged Lymph…
Hypoechoic Muscle Mass DIFFERENTIAL DIAGNOSIS Common • Hematoma • Muscle Tear • Nerve Sheath Tumor Less Common • Soft Tissue Sarcoma • Myxoma • Fibromatosis • Abscess • Metastases • Lymphangioma • Intramuscular Extension of Baker Cyst • Vascular Malformation • Local…
Postoperative Infection KEY FACTS Terminology • Infection at surgical site within 1 month of surgery or within 1 year of prosthetic implantation Imaging • Mild soft tissue edema, fluid, & hyperemia are…
Bone Surface Lesion DIFFERENTIAL DIAGNOSIS Common • Osteochondroma • Other Benign Bone Tumor • Malignant Bone Tumor Less Common • Metastases • Bone Tumor Recurrence • Acute Osteomyelitis • Chronic Osteomyelitis • Fracture • Orthopedic Implant • Cortical Tug Lesion…
Fascial Lesion DIFFERENTIAL DIAGNOSIS Common • Plantar Fasciitis • Plantar Fibromatosis Less Common • Plantar Fascial Tear • Enthesopathic Fasciitis • Investing Fascial Tear • Nodular Fasciitis • Infective Fasciitis • Necrotizing Fasciitis • Eosinophilic Fasciitis • Dupuytren Disease • Tumors…
Hematoma/Seroma KEY FACTS Imaging • Hematoma: Acute Quite well-defined heterogeneous mass ± echogenic pseudosolid appearance Multilaminated whorled appearance Anechoic cystic areas Echogenic foci due to gas locules Surrounding soft tissue edema…
Foot Ultrasound KEY FACTS GENERAL CONSIDERATIONS • Common specific indications: Suspected plantar fasciitis and fibroma, Morton neuroma, ganglia, osteoarthritis, gout, and other joint disorders • Less common specific indications: Suspected ligament injury,…
Hyperechoic Muscle Mass DIFFERENTIAL DIAGNOSIS Common • Intermuscular Lipoma • Intramuscular Lipoma • Muscle Edema • Vascular Malformation • Hematoma Less Common • Foreign Body • Soft Tissue Sarcoma • Muscle Metastases • Local Recurrence • Fibromatosis • Peripheral Nerve Sheath…
Soft Tissue Sarcoma KEY FACTS Terminology • Malignant tumor arising from connective (mesenchymal) tissue other than bone Imaging • Large, heterogeneous, hypoechoic mass Vast majority are located in deep (subfascial) tissues • Most…
