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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions β€” written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Small-sized vessel vasculitis with fever and focal neurological sign

Introduction

Abbreviations: ABG= Arterial blood gas, ANA= Antinuclear antibody, ANP= Atrial natriuretic peptide, ASO= Antistreptolysin O antibody, BNP= Brain natriuretic peptide, CBC= Complete blood count, COPD= Chronic obstructive pulmonary disease, CRP= C-reactive protein, CT= Computed tomography, CXR= Chest X-ray, DVT= Deep vein thrombosis, ESR= Erythrocyte sedimentation rate, HRCT= High Resolution CT, IgE= Immunoglobulin E, LDH= Lactate dehydrogenase, PCWP= Pulmonary capillary wedge pressure, PCR= Polymerase chain reaction, PFT= Pulmonary function test.

Diseases Clinical manifestations Para-clinical findings Gold standard Additional findings
Symptoms Physical examination
Lab Findings Imaging Histopathology
Headache Fever Weight loss Arthralgia Claudication Bruit HTN Focal neurological disorder Biomarker CBC ESR Other CT scan Angiography Ultrasound/ Echocardiography Other
Small-Vessel Vasculitis ANCA-associated vasculitis Granulomatosis with polyangiitis (Wegener’s)[1] + +/- +/- – – – – + Anti-PR3 antibody (C-ANCA) (90%), Anti-MPO antibody (P-ANCA) (10%) Leukocytosis, Normochromic normocytic anemia ↑ ↑Cr or BUN, Hypoalbuminemia Consolidation, Patchy or diffuse ground-glass opacities Occlusion or stenosis of LAD and RCA in coronary angiography – Single or multiple nodules and masses with cavitation in CXR Parenchymal necrosis, Granulomatous inflammation Histological confirmation Conjunctivitis,

Episcleritis,

Uveitis,

Optic nerve vasculitis

Immune complex small-vessel vasculitis Hepatitis C virus-associated cryoglobulinemic vasculitis[2] +/- +/- + + – – + +/- HCV RNA, Cryoglobulins Leukocytosis,Β Anemia ↑ ↓Serum C4, Positive RF Increased hepatic echogenicity – Hepatomegaly, Splenomegaly Increased hepatic echogenicity in MRI Vasculitic skin, Antigen infilteration in lesions HCV RNA, Histological confirmation Palpable purpura, Microscopic hematuria
Cardiovascular disease Infective Endocarditis[3] + + + – – – – + NT-proBNP Normochromic-normocytic anemia ↑ Hyperglobulinemia, Cryoglobulinemia Metastatic infections, such as splenic infarct, renal infarcts, or psoas abscess – Vegetation, abscess, or new dehiscence of a prosthetic valvein echocardiography Vertebral osteomyelitis in MRI Vegetation or intracardiac abscess demonstrating active endocarditis EchocardiographyΒ (TTE) Janeway lesions, Osler nodes, Roth spots, Vertebral osteomyelitis
Pulmonary disease Non-Small Cell Lung Cancer[4] – +/- + – – – – +/- EGFR, ROS1, EML4-ALK, Β PD-L1 Leukocytosis, Anemia ↑ Hypercalcemia, Hyponatremia Pulmonary lesion or mass – Pulmonary marginal lesions Staging and response to treatment in PET-CT Adenocarcinoma, Squamous cell carcinoma High resolution CT-scan Cough, Hemoptysis
Small Cell Lung Cancer[5] – +/- + – – – – +/- p53, Thyroid transcription factor-1 (TTF1) Anemia ↑ Hyponatremia Large hilar mass with bulky mediastinal adenopathy – Endobronchial ultrasound (EBUS) Standard staging Spindled cells with dark nuclei, scant cytoplasm, and fine, granular nuclear chromatin High resolution CT-scan Cough, Hemoptysis
Hematologic disease Hemolytic-Uremic Syndrome[6] + + – + – – + + C5b-9, ADAMTS13 Anemia, Thrombocytopenia, ReticulocytosisΒ  ↑ ↑Lactate dehydrogenase (LDH), HypercalcemiaΒ  Thalami, brainstem, or cerebellum abnormality Cerebral microangiopathy or hypertension Hypoechoic kidneyΒ  Abnormal hyperintensity in the brain cisterns in MRI Microthromboses include fibrin thrombi that may occlude the glomerular tuft Clinical findings coupled with laboratory abnormalities Hematuria, ProteinuriaΒ 
Chronic Lymphocytic Leukemia (CLL)[7] + + + + +/- – – +/- CD5, CD19, CD20,Β IgVH Absolute lymphocytosis, Smudge cells ↑ Flow cytometry Staging – – – Large atypical cells, cleaved cells, and prolymphocytesΒ  Chromosomal and genetic testing Easy bruising
Non-Hodgkin Lymphoma[8] + + + + +/- +/- +/- +/- MYC,Β BCL2,Β BCL6, andΒ TP53 Lymphocytosis, Anemia, Thrombocytopenia ↑ ↑Lactate dehydrogenase (LDH), HypercalcemiaΒ  Enlarged lymph nodes, Hepatosplenomegaly, Filling defects in the liver and spleen – Hepatosplenomegaly Mediastinal lymphadenopathy Small cleaved or noncleaved, intermediate, or large cell with a follicular or diffuse pattern Surgically excised tissue biopsy Easy bruising, Testicular mass, Skin lesion
Serum Sickness[9] + + – +/- +/- – – +/- IL-1, IL-6, TNF LeukopeniaΒ  ↑ Polyclonal gammopathy, ↑Cr, Cryoglobulinemia – – – – Arteritic lesions are focal, necrotizing, and inflammatory involving all layers of the artery Clinical findings coupled with laboratory abnormalities Hematuria, Skin rash
Disseminated Intravascular Coagulation[10] +/- + – +/- – – + + Fibrin degradation product (FDP) Thrombocytopenia, Schistocytes ↑ ↑D-dimer, aPTT and PT Intracranial hemorrhage – – – Ischemia and necrosis due to fibrin deposition in small and medium-sized vessels Clinical findings coupled with laboratory abnormalities Β Acral cyanosis, Hemorrhagic skin infarctions
Idiopathic Thrombocytopenic Purpura[11] + +/- – + – – – + FC gamma receptors (FCGR) IIb Anemia, Thrombocytopenia – HIV, ANA R/O other causes – R/O splenomegaly – Increased number of normal morphologic megakaryocytes Clinical findings coupled with thrombocytopenia Easy bruising, Purpura
Systemic disease Sarcoidosis[12] + + + + – – – +/- Β IL-2 and IFN-Ξ³ Mild anemia ↑ ↑ACE, ↑1, 25-dihydroxyvitamin D Active alveolitis or fibrosis – Hepatosplenomegaly Bilateral hilar adenopathy Noncaseating granulomas (NCGs) Histological confirmation Heart block, Ocular lesion
Legionella Infection[13] + + + + – – – +/- Inflammatory cytokines LeukocytosisΒ with left shift, Thrombocytosis ↑ ↑D-dimer, FDP, Hyponatremia Pleural effusion – – Nonspecific and indistinguishable CXR Intra-alveolar inflammation, Microabscesses in the parenchyma Sputum culture Cough, Diarrhea
Systemic lupus erythematosus[14] + + + + – – + + Anti dsDNA, ANA Β Leukopenia, Lymphopenia, Anemia, Thrombocytopenia ↑ ↑Cr or BUN,

↑ALT or AST, Proteinuria

Interstitial lung disease, Pneumonitis, Pulmonary emboli, Alveolar hemorrhage Aneurysms Pericardial effusion, pulmonary hypertension, or verrucous Libman-Sacks endocarditis in echocardiography Central nervous system (CNS) lupus white-matter changes in MRI Staging lupus nephritis Anti-dsDNA antibody test Skin rashes or photosensitivity

References

  1. ↑ Kubaisi B, Abu Samra K, Foster CS (2016). “Granulomatosis with polyangiitis (Wegener’s disease): An updated review of ocular disease manifestations”. Intractable Rare Dis Res. 5 (2): 61–9. doi:10.5582/irdr.2016.01014. PMCΒ 4869584. PMIDΒ 27195187.
  2. ↑ Guo QY, Wu M, Wang YW, Sun GD (2017). “Hepatitis C virus-associated cryoglobulinemia with membrano-proliferative glomerulonephritis treated with prednisolone and interferon: A case report”. Exp Ther Med. 14 (2): 1395–1398. doi:10.3892/etm.2017.4671. PMCΒ 5525644. PMIDΒ 28810602.
  3. ↑ McDonald JR (2009). “Acute infective endocarditis”. Infect Dis Clin North Am. 23 (3): 643–64. doi:10.1016/j.idc.2009.04.013. PMCΒ 2726828. PMIDΒ 19665088.
  4. ↑ Molina JR, Yang P, Cassivi SD, Schild SE, Adjei AA (2008). “Non-small cell lung cancer: epidemiology, risk factors, treatment, and survivorship”. Mayo Clin Proc. 83 (5): 584–94. doi:10.4065/83.5.584. PMCΒ 2718421. PMIDΒ 18452692.
  5. ↑ Jackman DM, Johnson BE (2005). “Small-cell lung cancer”. Lancet. 366 (9494): 1385–96. doi:10.1016/S0140-6736(05)67569-1. PMIDΒ 16226617.
  6. ↑ Corrigan JJ, Boineau FG (November 2001). “Hemolytic-uremic syndrome”. Pediatr Rev. 22 (11): 365–9. PMIDΒ 11691946.
  7. ↑ Byrd JC, Stilgenbauer S, Flinn IW (2004). “Chronic lymphocytic leukemia”. Hematology Am Soc Hematol Educ Program: 163–83. doi:10.1182/asheducation-2004.1.163. PMIDΒ 15561682.
  8. ↑ Shankland KR, Armitage JO, Hancock BW (September 2012). “Non-Hodgkin lymphoma”. Lancet. 380 (9844): 848–57. doi:10.1016/S0140-6736(12)60605-9. PMIDΒ 22835603.
  9. ↑ Lin RY (January 1986). “Serum sickness syndrome”. Am Fam Physician. 33 (1): 157–62. PMIDΒ 2867672.
  10. ↑ Venugopal A (2014). “Disseminated intravascular coagulation”. Indian J Anaesth. 58 (5): 603–8. doi:10.4103/0019-5049.144666. PMCΒ 4260307. PMIDΒ 25535423.
  11. ↑ Nomura S (2016). “Advances in Diagnosis and Treatments for Immune Thrombocytopenia”. Clin Med Insights Blood Disord. 9: 15–22. doi:10.4137/CMBD.S39643. PMCΒ 4948655. PMIDΒ 27441004.
  12. ↑ Chiarchiaro J, Chen BB, Gibson KF (2016). “New molecular targets for the treatment of sarcoidosis”. Curr Opin Pulm Med. 22 (5): 515–21. doi:10.1097/MCP.0000000000000304. PMCΒ 5152532. PMIDΒ 27454074.
  13. ↑ Murdoch DR (January 2003). “Diagnosis of Legionella infection”. Clin. Infect. Dis. 36 (1): 64–9. doi:10.1086/345529. PMIDΒ 12491204.
  14. ↑ Tsokos, George C. (2011). “Systemic Lupus Erythematosus”. New England Journal of Medicine. 365 (22): 2110–2121. doi:10.1056/NEJMra1100359. ISSNΒ 0028-4793.

Editor-In-Chief:
C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Eiman Ghaffarpasand, M.D. [2]