2413 results
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Nodosum - Causes and Differential ... shins but can spread ... Nodosum #Causes #Differential
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
and lymphangitic spread ... the overlap in differential ... Perilymphatic #Nodular #Differential
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
Differentiate ... • Hematogenous spread ... SickleCell #Disease #differential
Neck Mass - Differential Diagnosis Algorithm
Congenital Neck Mass:
 • Thyroglossal Duct Cyst
 • Branchial Cleft Anomalies
Neck Mass - Differential ... Carcinoma • Thyroid (Spread ... NeckMass #Congenital #Differential
Dyspnea - Considerations with Malignancy
Directly Malignancy Related:
 - Lymphangitic spread to lung
 - Malignant pleural effusion
- Lymphangitic spread ... dyspnea #algorithm #differential
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Indicates hematogenous spread ... inhalational injury Differential ... Chest #Radiology #differential
Hodgkin's Lymphoma vs Non-Hodgkin's Lymphoma - Comparison

Hodgkin's Lymphoma:
 • Epidemiology: young adults 20-30, older 50-70
 •
- Contiguous spread ... Noncontiguous spread ... involvement Differential ... oncology #diagnosis #differential
Pleural effusion is seen in:
1. Pulmonary edema
2. Lymphangitic spread of carcinoma - often unilateral
3. Tuberculosis
4. Lymphangiomyomatosis
Lymphangitic spread ... PleuralEffusion #Differential
Lymphocutaneous Sporotrichiosis Infection

Landscaper w/ painless nodular rash of arm present for months wax and wane; diagnosis?
Lymphocutaneous
biopsy preferred Differential ... lesions w/ lymphatic spread
Hemorrhagic Pericardial Effusions (Hemopericardium)- Differential Diagnosis Framework

IATROGENIC DISEASE
Secondary to invasive cardiac procedures

NONIATROGENIC
• Malignancy (e.g., metastatic spread:
Hemopericardium)- Differential ... e.g., metastatic spread ... Hemopericardium #Differential