Immuno/Path Dzs Flashcards
Pt with. C1 esterase deficiency. PD will find? Mech?
Hereditary angioedema. Increased kalkerin activation - increased bradykinin - increased vasodilation
Pt with recurrent pyogenic sinus and respiratory tract infections. Increased susceptibility to type III hypersensitivity reactions?
C3 deficiency
Recurrent Neisseria infections - immune defect?
C5-C9 (no mac complex)
With with occasional hemolobinuria. Possible immune defect?
Paroxysmal nocturnal Hb-uria. Deficiency in DAF
Pt with fever, urticaria, arthralgias, and proteinuria a week after exposure to drug?
Serum sickness. HSR III
Intredermal injection of vaccine. Get edema, necrosis and complement activation in that area?
Arthus reaction
Pt given blood. Gets urticaria, wheezing and fever? tx?
Type I HSR. Give antihistamines
PT given blood. Has trouble breathing, hypotension and goes into shock.
Anaplylaxis. IgA deficient pt got blood with IgA
Pt given blood.Gets fever, headaches, chills and flushing
HSR II (host Abs against donor HLAs)
Pt given blood. fever, hypotension, increased HR, increased RR, flank pain and jaundice
HSR II. Intravascular hemolysis (wrong blood group)
Pt with recurrent bacterial infections after 6 months of age. Defect?
X-linked Bruton’s agammaglobuliemia.
BTK gene, no B-cell maturation
Pt with recurrent sinusitis and pulmonary infections and numerous allergies. Also has milk allergies and diarrhea.
Selective IgA deficiency. (decreased IgA leads to respiratory infections and GI infections)
young adult patient with numberous sinopulmonary infections. Has Lupus. Normal B cells but low plasma cells? Risk for?
Common variable immunodefiency. Lymphoma
Pt with small lymph nodes, decreased B-cells and low IgGs. Defect?
X-linked Bruton’s agammaglobuliemia.
BTK gene, no B-cell maturation
Female pt with recurrent sinusitis and pulmonary infections and numerous allergies. Has positive B-HCG but not pregnant. Cause?
Selective IgA deficiency.
Pt with tetany and recurrent viral/fungal infections. No thymic shadow. Dx?
DeGeorges
Pt with recurrent dessemminated infections. Labs show?
decreased INF-y. IL-12 receptor deficiency (few Th1s)
Pt with course facial features, rash and non-inflammed abcesses.
Hyper-IgE (Jobs).
Hyper IgE - findings?
FATED course Facies noninflammed staph Abcesses retained primary Teeth increaed IgE Derm findings (ezcema)
Pt with chronic Candida infections. Low IL-2 and INF-y. Defect?
Chronic mucocutaneous candidiases
Young pt with chronic diarrhea. Bacterial, fungal and viral infections. Absent thymic shadow.
SCID (no T or B cells)
Pt with increased AFP and decreased IgA, IgG and IgE. Defect?
Ataxia-telangiectasia. ATM gene mutation, bad repair.
Pt with bad balance, spider angiomas, and multiple respiratory infections. Defect?
Ataxia-telangiectasia. ATM gene mutation, bad repair.
Pt multiple pyogenic infections. Decreased neutrophils, decreased IgA, IgG and IgE. Defect?
Hyper IgM. CD40L defect (can’t class switch)
Pt with low platelets, rash and multiple infections.Labs will show? Defect?
Wiskott-Aldrich. WASP gene (T-cell cytoskeleton defect)
Pt with Increased IgE, IgA, decreased IgM. Defect?
Wiskott-Aldrich.
Defect in LFA-1 integrin, CD18
Leukocyte adhesion deficiency
Pt with recurrent bacterial infections. No pus.
Leukocyte adhesion deficiency
Pt who’s umbilical cord took a long time to come off?
Leukocyte adhesion deficiency
Giant granules in neutrophils.
Chediack-Higashi
Organ transplant. Organ becomes cyanotic and mottled almost instantly? Leads to?
Hyperacute rejection. HSR II. Leads to ischemia and necrosis
Organ transplant. Pt becomes sick a few weeks later? Histo?
Acute rejection. Vasculitis with interstitial lymphocytic infiltrate.
Organ transplant. Pt becomes sick a few months later? Histo?
Chronic. Obliterative vascular fibrosis. HYPOCELLULAR. irreversible.
Organ transplant. Pt comes in with maculopapular rash, jaundice, hepatosplenomegaly, and diarrhea.
Graft vs Host.
Pt with chronic renal failure presents with carpal tunnel and joint pain. Dz?
B2-microgobulin amyloid. Seen in dialysis pts.
Heriditary amyloid that affects heart and brain?
ATTR
Cause of amyloid if found in:
1) heart
2) thyroid
3) pancreas
4) brain
5) pituitary
1-ANP 2-Calcitonin 3-Islet amyloid protein 4-B-amyloid (APP) 5-Prolactin
Most common benign tumor in male/female?
lipoma/leiomyoma
Movable mass at angle of jaw?
mixed tumor
Female with RLQ pain with radiographic calcifications?
tertatoma with teeth
Pt with Tuberous sclerosis - increased risk of what cancer?
Giant cell astrocytoma
renal angiomyolipoma
Cardiac rhabdomyoma
Bombesin - marker for?
Neutroblastoma
Lung cancer
Gastric cancer
hyperacute vs acute rejections - main cells?
Abs (B-cells) vs CTL (T-cells)
Pt has disease with a failure for Th1 to produce INF-y vs failure of Th1 to respond.
Hyper-IgE vs IL-12 deficiency