Hem Onc Flashcards
Manifestation of initial seroconversion of HIV
Mono type syndrome with fever, malaise, pharyngitis, rash, lymphadenopathy
Neonate: oral thrush, FTT< lymphadenopathy.
Dx HIV
ELISA confirmed with Western
When to start retrovirals for HIV
CD 4<350
Pregnant
Nephropathy
Hep B conifection
CD 4< 200 prophy
PCP: TMP-SMX, daponse, or pentamidine
CD4<50 prophy
MAC: Azithromycin or Clarithromycin/ or Rifabutin as alternative
Consider cryptococcal and candida prophy with fluconazole
Vaccine must give with CD 4 >200
MMR - because is live
Vaccine to give to all HIV pts
Pneumo Hep B Inactivated polio Annual flu Tetanus booster q 10 yrs Annual PPD, CXR if anergic
AIDS associated malignancies
Kaposi - HHV 8 nonHogkin lymphpma (esp primary B cell of CNS)
Positive India Ink
Cryptococcus
Ring enhancing lesion
Toxoplasmosis
Cysticerosis/Taenia solium in Latin America
Meds to reduce mom-child transmission HIV
Mom: AZT/ZDV, no breastfeeding
Kid: ZDV for 6 weeks after birth
CMV retinitis Tx
Valganciclovir
Alt: foscarnet or cidofovir
Stains to detect PCP
Silver - Wright Giemsa, Giemsa, methanemine silver
Needle stick - what to do
HIV testing
Start HAART immediately - lamivudine, zidovudine
Restest 6 wks, 3 months, 6 months
Four causes microcytic anemia
TICS- Thalessemia Iron def anemia of Chronic disease Sideroblastic anemia
Elderly man with hypochromic microcytic anemia and no Sx, Dx test?
FOBT and sigmoidoscopy
Suspect colorectal Ca
Precipitants of hemolytic crisis in pts with G6PD def
Sulfonamides
Antimlalarial Rx
Fava beans
Most common inherited cause of hypercoagulability
Factor V Leiden
Most common inherited bleeding disorder
von Wilebrand’s
Most common inherited hemolytic anemia
Hereditary spherocytosis
Dx test for hereditary spherocytosis
Osmotic fragility test
Pure RBC aplasia
Diamond Blackfan anemia
Anemia associated with absent radii and thumbs, diffuse hyper-pigmentation, cafe au lait, microcephaly, pancytopenia
Fanconi’s
Meds and viruses that lead to aplastic anemia
Chloramphenicol, sulfonamides, radiation, chemo
Hepatitis, HIV, Parvovirus B19, EBV
How to distinguish polycythemia vera from secondary polycythemia
Both have inc HCT and RBC mass
Polycythemia vera: normal O2 sats and low EPO
TTP pentad
FAT RN Fever Anemia Thrombocytopenia Renal dysfunction Neuro abnormalities
ADAMTS13
HUS triad
Anemia
Thrombocytopenia
Acute renal failure
Tx TTP
Emergent large volume plasmapheresis
Corticosteroids
Antiplatelet drugs
NO PLATELET TRANSFUSION - CI!!!!
Tx ITP in children
Resolves spontaneously, may require IVIG and/or corticosteroids
Which of following are inc in DIC, fibrin split products, D-dimer, fibrinogen, plts, HCT
Inc: fibrin split and D- dimer
Dec: plts, fibrinogen, Hct
8 yr boy presents with hemarthrosis and inc PTT with normal PT and bleeding time. Dx? Tx?
Hemophilia A or B
Consider desmopressin for hemophilia A or factor VIII or IX supplements
14 yr girls with prolonged BT after dental surgery and with menses, normal PT, normal or inc PTT, inc BT
Dx?
Tx
von Willebrand’s
Tx desmopression, FFP, or cryoprecipitate
60 yr AA man with bone pain. What would a workup for MM reveal?
Monoclonal gammopathy
Bence Jones proteinuria
Punched out lesions on x-ray of skull and long bones
Reed Sternberg cells
Hodgkin’s lymphoma
10 yr boy with fever, weight loss, night sweats. Exam shows ant mediastinal mass. Dx?
Non Hodgkins
Microcytic anemia with dec serum Fe, dec TIBC, normal or inc ferritin
Anemia of chronic disease
Microcytic anemia with dec serum Fe, dec ferritin, inc TIBC
Fe def anemia
80 yr man with fatigue, lymphadenopathy, splenomegaly, isolated lymphocytosis
Dx?
CLL
Lymphoma equivalent of CLL
Small lymphocytic lymphoma
Late life threatening complication of CML
Blast crisis- fever, bone pain, splenomegaly, pancytopenia
Auer rods
AML
AML subtype associated with DIC
Tx
M3
Retinoic acid
Electrolyte changes in tumor lysis syndrome
Dec Ca
Inc K
Inc Phosphate
INc uric acid
50 yr man presents with early satiety, splenomegaly, bleeding, t(9,22)
Dx
CML
Heinz bodies
Intracellular inclusions seen in thalessemia, G6PD def, postsplenectomy
Virus - aplastic aneima in sickle cell
Parvovirus B19
25 yr AA man with sickle cell anemia has sudden onset bone pain
Management?
O2, analgesia, hydration, transfusion if sever
Significant cause of morbidity in thalassemia its
Tx
Fe overload
Tx with deferoxamine
Shift Hb-O2 curve to left - what does it mean and causes
Mean- increased affinity for O2 Metabolic alkalosis Dec body T Increased HbF Dec CO2 Dec 2,3, BPG
Shift Hb-O2 curve to right - what does it mean and causes
Mean: lower affinity for O2 Metabolic acidosis increased body T High altitude Inc CO2 Inc 2,3 BPG Exercise
Cherry red lips, hypoxia despite normal pulse ox
CO poisoning
Tx: O2
Hg Bart
Hydrops fetalis with 4 mutated alpha globin genes = fetal death
Ringed sideroblast + basophilic stippling
Pb poisoning anemia
Tx Pb poisoning
EDTA or DMSA
Dimercaprol if severe
Succimer in kids
Microcytic anemia: Fe def vs thalessemia
- MCV: RBC >13
- MCV: RBC <13
> 13: Fe def
<13: thal
If microcytic anemia, essential test before Fe administration
R/O thalassemia because adding Fe will cause Fe overload
Components of Coombs reagent
Rabbit IgM against human IgG and complement
Direct agglutination
What?
Meaning?
Coombs reagent + RBC
Agglutinate: presence of IgG and complement on RBC membrane
Indirect agglutination
What?
Meaning
Serum + Type O RBC + Coombs reagent
Agglutinate: anti RBC Ab - Rh Alloimmunization
Schistocytes, spherocytes, Burr cells
Hemolytic anemia
2 types of hemolytic anemia with + direct coombs
Drug
Immune
Cold agglutinin
IgM
Warm agglutinin
IgG
Bite cells and Heinz bodies (dots of Hg in RBC)
G6PD def
Megaloblastic anemia- most common cause
Folate def
Hypersegmented neutrophils
B12 or folate def
Fatty infiltrate in BM
aplastic anemia
Aplastic anemia in sickle cell
Parvovirus B 19
Function hydroxyurea in sickle cell
Inc HbF
Fish mouth vertebrae, lung infiltrates in acute chest syndrome
Sickle cell
Heterozygous carriers sickle cell
ASX
more resistance to malaria
Sickle cell increases susceptibility to
Salmonella osteomyelitis
SEpsis by encapsulated organisms: Strep pneumo, H flu, N meningitidis, Klebsiella
4 types hypersensitivity reactions
ACID Anaphylactic Complement mediated Immune complex mediated Delayed
Test to measure heparin
What factors
PTT
II, IX, X, XI, XII - intrinsic
Test to measure warfarin
What factors
PT
Vit K dep: II, VII, IX, X, c ans d s- extrinsic
Proper way to anticoagulate
Start LMWH or until PTT therapeutic on unfractionated heparin then start warfarin
Because warfarin inhibits protein C and S - cause short period of hypercoagulability after starting
Only clotting factors not made by liver
vWF and VIII
Food with lots of Vit K
green veggies
Signs of TTP HUS
Nasty Fever Torched His Kidneys Neuro Fever Thrombocytopenia Hemolytic anemia Kidney failure
ASA mechanisms
Inhibits plt aggergation by inhibiting COX activity to suppresses TXA2 synthesis
Thienopyridines (clopidogrel, ticlopidine) mechanism
Block ADP receptors to suppress fibrinogen binding to injury and plt adhesion
GP IIb/IIIA inhibitors (abciximab, tirofiban, eptifibatide)
Inhibit plt aggregation by binding GP IIB/IIIA receptors
Adenosine reuptake inhibitors (dipyridamole) mechanism
Inhibit adenosine deaminase and PDE to inhibit plt aggregation
Heparin mechanisms
Bind to antithrombin to increase activity and prevent clot
LMWH (enoxaparin, dalteparin) mechanism
Bind factor Xa to prevent clot formation
SAFEST DURING PREGNANCY
Direct thrombin inhibitors (lepirudin, argatroban)
Highly selective inhibitors of thrombin to suppress factors V, IX, XIII and plt aggregation
Direct factor Xa inhibitors (fondaparinux)
Highly selective inhibition factor Xa without thrombin activity
Use direct thrombin vs factor Xa inhibitors
Thrombin: alternative to heparin if pt has had HIT
Xa: DVT, PE anticoag, DVT prevention
Warfarin mechanism
Antagonizes Vit K dep carboxylation of factors II, VII, IX, X
Cause sepsis asplenic pts
Encapsulated bugs
Sepsis IVDU
Staph aureus
Common place malaria
Sub-Saharan Africa
Prophy for malaria
Chloroquine, Mefloquine
Stain for Plasmodium
Giemsa - shows ring and Schuffers granules
Criteria sepsis
2 of following
- RR > 20 or PaCOR 90
- WBC >12,000 or 10%
- T >38 or 90
NRTI mechanisms, adverse
Abacavir, Didanosine, Lamivudine, Zidovudine (AZT)
- Inhibit production of viral genome, block incorporation of viral DNA via reverse transcriptase inhibition
- BM, neuropathy, pancreatitis, hypersensitivity
NNRTI mechanisms, adverse
Delavuridine, Efavirenz, Nevirapine
- Inhibit reverse transcriptase
- Liver, neuro, rash
PI mechanisms and adverse
“-navir”
- Interfere with viral replication - produce nonfcnal virus
- Hyperglc, hyperTG, drug interactions, lipodystrophy
Integrase inhibitor mechanisms and adverse
Raltegravir
- Inhibits final step in integration of viral DNA into host
- Neutropenia, pancreatitis, liver, hyperglc
Fusion inhibitor mechanisms and adverse
enfuvirtide
- Inhibits viral ability to fuse with CD4 cell - cannot enter
- hypersesntivity at injection site, bacterial pneumo
CCR5 antag mechanisms and adverse
Maraviroc
- Inhibits viral CCR5 coreceptor –>no entry into host
- URI infections, peripheral neuro, dizzy
Combos
Combivir
Trizivir
Epzicom
Good if regimen is confusing and causing noncompliance
Complication Polycythemia vera
Progress to leukemia
bence Jones proteins, M protein, punched out lesion on rad
Multiple myeloma
Reed Sternberg cells
Hodgkin lymphoma- B cells
Prognosis Hodgkin vs Non
Hodgkin good
Non not good
8:14 vs 14:18
8: 14 Burkitt
14: 18 follicular small cell
Starry sky
Burkitt
Cleaved cells
Follicular small cell
Most common leukemia kids
ALL
bad prognosis ALL
Adult of Phl chr
Phl chr
ALL
CML
9:22 BCR-ABL - imitinab
Blood smear shows notched nuclei and Auer rods; stains with myeloperoxidase
AML
Smudge cells and CD5
CLL
Possibly due to radiation exposure
CML
Irregular cytoplasmic projection
Hairy cell
Like CML
Blast crisis
CML
Radiation induced malignancies
Thyroid
CML
Sarcoma
Fatigue, DOE< infections, short, abnormal skin pigmentation (cafe au lait or hypopigment), mutated thumbs, horseshoe kidney - chromosome breakages, AR
Fanconi anemia - 2/2 BM failure
Fatigue, DOE< cyanosis, pallor, craniofacial abnormalities, thumb abnormalities, heart murmur, mental retardation, hypogonadism = pure RBC anemia
Diamond Blackfan
Antidote heparin
Protamine sulfate
Antidote warfarin
Vit K
What is increased in hemophilia PT or PTT
PTT
Factors in cryoprecipitate
VIII and fibrinogen
Some Factor XIII, vWF, fibronectin
Function of DDVAP in hemophilia Tx
Release more factor VIII
Prolonged PTT and BT
von Willebrands disease IF factor VIII def as well
Causes of hypercoaguable states
ATIII def Protein C or S def Factor V leiden Hyperhomocysteinemia Dysfibrinogenemia Plasminogen def Prothrombin G20210A mutation MTHFR mutation
5 S/S of TTP
Low plt Microangiopathic hemolytic anemia Neuro changes - delirium, seizure, stroke Impaired kidney Fever
Need 3 of 5
HUS vs TTP
HUS: severe elevation Creatinine
3 causes microangiopathic hemolytic anemia
HUS
TTP
DIC
LAP in heme malignancy vs leukemoid reaction (EBV)
LAP elevated in leukemoid and low in malignancy
College kid consumes alcohol and barbs then has episode abd pain and brown urine next day
porphyria
Tx nonhemolytic febrile transfusion reaction
Acetaminophen
Ages Leukemias
ALL60
Tumor lysis syndrome labs
Hyper K
HyperPhos
Hyperuricemia
HypoCa
Dutcher bodies
What
Disease
IgM that stain with PAS
Waldenstroms
Congo red shows apple birefringence
amyloidosis
Amyloidosis of Mult myeloma and Waldenstroms
AL
Amyloidosis of chronic inflammatory disease
AA
Causes secondary eosinophilia
NAACP Neoplasm Allergies ASthma Collagen vascular disease Parasites
Hematuria with eosinophilia
Possibibly schostosomiasis
Neoplasm: Down syndrome
ALL
Neoplasm: Xeroderma pigmentosum
SCC and basal cell of skin
Neoplasm: chronic atrophic gastritis, pernicious anemia, postsurg gastric remnants
Gastric adenocarcinoma
Tuberous sclerosis (facial angiofibroma, seizures, mental retardation)
Astrocytoma and cardiac rhabdomyoma
Actinic keratosis
SCC of skin
Barrett’s
Esophageal adenocarcinoma
Plimmer Vinson (atrophic glossitis, esophageal wbs, anemia - due to Fe def)
SCC of esophagus
Cirrhosis (Etoh, HBV or HCV)
Hepatocellular CA
UC
Colonic adenocarcinoma
Paget’s disease of bone
Secondary osteosarcoma and fibrosarcoma
Immunodef states
Malignant lymphomas
AIDS
Aggressive malignant NHL and Kaposi
AI (MG)
Benign and malingnant thymomas
Acanthosis nigricans
Visceral malignancy - stomach, lung, breast, uterus
Multiple dysplastic nevi
Malignant melanoma
Methyldopa, penicillins, and sulfonamides cause
RBC Ab and hemolysis
Chloroquine and sulfa drugs cause
Hemolysis in G6PD
Phenytoin causes
Megaloblastic anemia by interfering with folate metabolism
Chloramphenical, chemo, zidovudine cause
aplastic anemia and BM suppression
Acanthocytes or spur cells
Abetalipoproteinemia
Echinocytes, burr cells
Uremia
Howell Jolly bodies
Asplenia,
Hypersegmented neutrophils
B12 or folate def
Fe inclusions in RBC of BM
Sideroblastic
Tx: pyridoxine
Parasites inside RBC
Malaria
Babesiosis
Polychromasia
Reticulocytosis
Rouleaux
Multiple Myeloma
Schistocytes, helment cell, fragmented RBC
Intravascular hemolysis
Target cells
Thalassemia or liver dis
Teardrop shaped RBC
Myelofibrosis
Cows milk before 1 yr of age
Anemia via bleeding in GI tract
Type of lung cancer that mets early
Small cell
Paraneoplastic syndrome of small cell lung ca
SIADH
Cushing
Hypercalcemia 2.2 PTH
Plaque like itchy skin rash that does not improve with Tx, blood smear shows cerebriform nuclei (“butt cells”), Pautrier abscess in epidermis
Mycosis fungoides, Sezary syndrome
EBV in Africa
Burkitt
HTLV-1 is a cause
T cell leukemia
Best and worst prognosis subtypes NHL
Best: small follicular
Worst: large diffuse
Anemia, teardrop cell, dry tap on BM biopsy, high MCV and RBC distribution, assoc w/ CML
Myelodysplasia/Myelofibrosis
Osteolytic, Bence Jones, High calcium
Multiple Myeloma- cannot see on PET scan becuase lytic not blastic
Hyperviscosity, IgM spike, cold agglutinins
Waldenstrom
Pruritis after hot bath, high Hg, Tx phlebotomy
Polycythemia vera
Plt >1,000,000, pts might have bleeding or thormbosis
Primary thrombocytopenia
Cancer highest mortality
Lung
Highest incidence cancer
Male: prostate
Female: breast
Familial polyposis plus osteomas and soft tissue tumors
Gardner
MEN I
Parathyroid
Pituitary
Pancreas- islet cell
MEN IIA
Medullary thyroid
Parathyroid
Pheo
MEN II B
Medullary
Pheo
Mucosal neuromas
Perioral freckles, multiple noncancerous GI polyps, increased incidence noncolon cancer (stomach, breast, ovaries)
Peutz Jeghers
Neurofibromas, cafe au lait, inc pheo, bone cyst, Wilms, leukemia
NF1
BIlat acuoustic schwanoma
NF2
Adenoma sebaceum, seizures, mental retardation, glial nodules in brain, increased renal angiomyolipomas, cardiac rhabdomyomas
Tuberous sclerosis
Hemangiomas in cerebellum, renal cell cancer, cyst in liver or kidney
Von Hippel Lindau
Increased risk skin cancer - genetic
Xeroderma pigmentosum, albinism
Vinyl chloride cancer
Liver angiosarcoma
AFP tumor marker
Liver, yolk sac testicular
Bladder tumor antigen, NMP 2 tumor marker
Bladder
CA 15-5, CA 27.29
Breast
CA 19-9
Pancreas, lung
Ca-125
Ovarian
CEA
colon, ancreas, GI
Chromagrnain A
Carcinoid, neuroblastoma
hCG
hyaditaform moles, choriocarcinoma
Beta 2 microglobulin
multiple myeloma, CLL
PSA
Prostate
S-100
Melanoma, CNS, nerve tumors
Thyroglobulin
Thyroid
Most common breast cancer
Invasive ductal
Good Tx if hormone sensitive breast ca in postmenopausal
Aromatase inhibitor- Anastrazole,
Not for premenopausal
Good for premenopausal with ER + breast cancer
Tamoxifen or Raloxifene
Her2/neu Rx
Trastuzuma
Trousseau sign
Migratory thrombophlebitis
Could indicate pancreatic ca- adenoCA
Courvoisier sign
Palpable nontender GB- may be pancreatic CA- adenoCA
4 types pancreatic cancer
Insulinoma - beta cell
Gastrinoma
Glucagonoma- alpha cell
VIPoma
Whipple triad
Hypoglycemia <50
CNS Sx 2/2 hypoglycemia
Give glc to relieve Sx
Think Insulinoma = C peptide will be high (not high with DM)
Dx gastrinoma
Eleavated fasting serum gastrin or secretin stimulation test
Hyperglycemia with high glucagon and migratory necrotizing skin erythema
Glucagonoma - alpha cell
Watery diarrhea, hypoK, achlorhydria
VIPoma
Tumor that has skin/teeth/hair/bone
can show up as pelvic calcification on rads
Dermoid cyst/teratoma
Tumor causes virilization - hirsutism, receding hairline, deepening voice, clitoromegaly
Sertoli-Leydig (ovarian cell)
Causes feminization and precocious puberty tumor
Granulosa theca cell tumor (ovarian tumor)
Meigs syndrome
Ovarian fibroma, ascites, right hydrothorax, pleural effusion
Krukenberg tumor
Stomach or other GI ca with mets to ovaries
Increased 5HIAA
Carcinoid tumor- most commonly in GI - appendix
CD1 positive cells + birbeck granules
Histiocytosis
Liver flukes like Clonorchis
Cholangiosarcoma
Also caused by IBD
Most common tumor of liver
Hemangioma- benign and left alone
OCP, benign liver tumor
Hepatic adenoma
Main primary liver in kids, malignant
Hepatoblastoma
EBV and Asian and nose
Nasopharyngeal cancer