Exam #1 Flashcards
Auer rods
not very many
many
not very many : Acute myeloid leukemia (accumulation of MPO)
many: acute promyelocytic leukemia
t(15;17)
- retinoic acid receptor mutation leading to RAR disruption
- acute promyelocytic leukemia (subtype of AML)
myeloperoxidase stains
myeloblasts
CD33 and CD34 positive
CD33: immature myeloid cells
CD34: multipotent stem cells
means acute myeloid leukemia (AML)
CD15
CD64
CD15 and CD64: mature myeloid cells
t(9:22) Philadelphia chromosome
- outcome
- causes
- BCR-ABL protein fusion drives granulocytic and megakaryocytic progenitor proliferation
- Chronic Myeloid Leukemia and bad prognosis ALL
Smudge cells
Chronic lymphocytic leukemia and SLL
-fagile lymphocytes (usually B cells)
M-CSF
G-CSF
G/M-CSF
M-CSF: monocyte
G-CSF: granulocyte
G/M-CSF: monocyte/granulocyte
-given after chemotherapy
Tdt stains for
lymphoblasts
Neutropenia causes
Acute viral syndromes
Rickettsial diseases
Chemotherapy
granulocytes
eosinophil
neutrophil
basophil
Atypical lymphocytosis (Downey Cells)
- appearance
- causes
RBC indent lymphocyte
-seen in EBV/CMV
Dohle Body
- lighter than morulaes
- associated with left shifts and can be seen in conjunction with toxic granulation
Job’s Syndrome
- hyper IgE (diagnostic)
- retention of baby teeth
- skin issues
- facial abnormalities
Flower cells
Sezary syndrome
cutaneous CD4+ cell/T-cell lymphoma/leukemia
Hairy cells lineage and mutation
hairy cell leukemia
- B cell leukemia that is a subtype of CLL
- BRAF mutation
Morulae
dark spot in cytoplasm of cell that is darker than dohle body
-associated with Ehrlichiosis and Anaplasmosis
Rash associated with amoxicillin/ampicillin given
EBV
posterior cervical lymphadenopathy
EBV
Rubella
Epstein-Barr Virus type of autoimmune hemolytic anemia
IgM cold agglutinins
Plaque on the side of the tongue and cant scrape off unlike candida’s in which you can scrape
-associated with?
Hairy Cell Leukemia
-associated w EBV
Rapidly growing tumors around the mandible
Burkitt’s lymphoma (African form)
EBV can give rise to
Burkitt’s lymphoma (African form)
Hodgkin’s lymphoma
Nasopharyngeal carcinoma
Atypical lymphocytes (Downey cells0
Owl’s eyes
Hodgkin’s lymphoma (Reed-Sternberg cells)
CMV
Starry night pattern
Burkitt’s lymphoma
Reed-Sternberg cells of Hodgkins lymphoma disease
dormant hypnozoites in hepatocytes
P. vivax/ovale
banana shape on blood smear
P. falciporum
P. vivax
P. ovale
P. malariae
P. vivax - every 2 days
P. ovale - every 2 days
P. malariae -every 3 days
Severe symptoms of P. falciparum
Hemolytic anemia
Blackwater fever: hemolytic crisis with severe anemia, black urine, oliguria/acute renal failure from hemoglobinuria, jaundice
Malaria stain
Wright’s or Giemsa stain
ringforms in RBCs
Falciparum if high parasitemia (>60%) all others roughly 1-2%
artemisinins Atovaquone-proguanil Chloroquine Primaquine Quinine plus Clindamycin Quinidine
why to give
artemisinins - get from WHO Atovaquone-proguanil - go to drug in US mild-moderate severity Chloroquine - north of Panama Canal Primaquine - kill vivax and ovale Quinine plus Clindamycin - pregnant Quinidine - IV is severe
Chloroquine contraindications
psoriasis or porphyria
Primaquine contraindications
Pregnancy (fetus lack G6DPH)
G6PDH deficient patients
Atovaquone-proguanil
Chloroquine
Quinine & Quinidine
Artemisinin
MOA
Atovaquone-proguanil: inhibits ETC
Chloroquine: blocks heme polymerization
Quinine & Quinidine: blocks heme polymerization
Artemisinin: Inhibition of nucleic acid and protein synthesis
Neutrophilia causes
corticosteroids
epinephrine –> demargination
infection (C. diff)
inflammation
Eosinophilia causes
Parasitic infections
Allergies
Job’s syndrome
Hyper IgE
retention of baby teeth
plaque on tongue cannot be remove like candida
Basophilia causes
CML (BCR-ABL positive)
Neutropenia causes
Acute viral syndromes
Rickettsial diseases- Ehrlichiosis/Anaplasmosis
Chemotherapy and radiation therapy
2 lobed “dumb bell” neutrophil
Pelger-Huet anomaly
Long Island, Fire Island, Shelter Island, Nantucket Island and Martha’s Vineyard in the northeast US
Babesiosis
Babesios treatment
Atovaquone + axithromycin
Clindamycin + quinine
Powassan virus causes
neurological issues
Tick borne illnesses confections Ixodate bites
Babesios
Anaplasmosis
Powassan
Borrelia burgdorferi
difference between folate and B12 def
B12 present with neurological symptoms but after a long time
vitamin K dependent factors
II
VII (most sensitive)
IX
X
hemophilia A
hemophilia B
mutation and test
hemophilia A: mutated factor VIII (carried by mom and given to son)
-prolonged PT, normal PT
hemophilia B: mutated factor IX
-prolonged PT, normal PT
von Willebrand disease (type 1,2,3)
mutated (2) or def. (1,3) vWF type 1: mild-moderate (def. in vWF) type 2: defective multimer assembly type 3: severe (very low vWF) -lead to dec VIII bc stabilizes VIII -normal platelets -prolonged PTT
von Willebrand factor purpose
- Binds to exposed collagen and GPIb receptor on platelet surface
- Activated platelets release ADP & thromboxane A2 (TXA2)
- Carries/protects of Factor VIII
tissue plasminogen activator (t-PA)
enzyme that converts plasminogen to plasmin which breaks down fibrin and some clot factors
Heparan sulfate Thrombomodulin Protein C Plasmin Antithrombin
Heparan sulfate: Activates antithrombin
Thrombomodulin: binds to thrombin
Protein C: inactivates factors Va and VIIIa
Plasmin: degrades fibrin (D-dimers and FDP)neutralizes Antithrombin: inactivates thrombin and clotting factor Xa
what will vitamin K immediately effect when low
Factor VII (extrinsic but not intrinsic pathway) and protein C bc they have short half lives
Heparin inhibits
Warfarin inhibits
Heparin: 12, 11, 9, 10, 2
Warfarin: 10, 9, 7, 2
normal platelet count
150,000 - 450,000
ADAMTS13 (vWF metalloprotease) def.
Thrombotic thrombocytopenic purpura (TTP)
Heparin-induced thrombocytopenia (Type I and II)
Type I: direct activation of platelets
Type II: antibodies (IgG) that recognize complexes of heparin and platelet factor 4, Fc region of antibody binds platelet causing activation –> severe thrombosis
immune thrombocytopenic purpura
Adult: autoantibody that destroys platelets (chronic in adults) usually secondary to SLE, HIV
Children: autoantibody that destroys platelets after viral infection (acute bc resolves after about 6 months)
Bernard-Soulier syndrome
deficiency of platelet membrane glycoprotein complex Ib-IX
Glanzmann thrombasthenia
defective platelet aggregation from deficiency or dysfunction of glycoprotein IIb-IIIa
Disorders of platelet secretion (storage pool disorders):
Defective release of mediators of platelet activation, unusual bleeding (after surgical procedure)
DiGeorge syndrome
Thymic hypoplasia
- 22q11.2 deletion syndrome (3/4 pharyngeal pouches)
- heart defect (ventricular septal defect)
- hypoparathyroidism (parathyroid disfunction
- cleft palate
Thymic hyperplasia (true vs. follicular)
True: inc size while maintaining normal architecture
Follicular: inc in B cell follicles
dermatitis herpetiformis
autoimmune blistering disorder that is associated with celiac disease (gluten sensitivity)
-immunofluorescence showing immunoglobulin A (IgA) in the papillary dermis
pernicious anemia
autoimmune destruction of parietal cells that release intrinsic factor resulting in malabsorption of B12
dactylitis
sickle cell anemia
CD 55 and CD 59
proximal nocturnal anemia
pseudohyphae
candida
narrow budding yeast
cryptococcus neoformis
pediculosis
lice
Cutaneous larva migrans
hook worm
Cutaneous Leishmaniasis
transmitted by sand fly
soldier returning from Middle East
Paronychia
Infection around a nail
Panniculitis
inflammation of subcutaneous fat
hyaluronidase
- Staphylococcus aureus and in Group A Streptococcus
- an extracellular enzyme that helps destroy some the polysaccharides that hold cells together, allowing these bacteria to spread through the tissues of the host
M proteins
on Streptococcus prevent opsonization by complement, making it more difficult to be phagocytized
Skin infections in unvaccinated children
Haemophilus influenza
dog and cat bites
Pasteurella
Wound infections after human bites
Eikenella corrodens
rat bite
Streptobacillus moniliformis and Spirillum minus
snakebites
Pseudomonas aeruginosa
Puncture/nail wounds through shoes that lead to infection
Pseudomonas aeruginosa
groin and axillary regions that fluoresce coral red with a Wood’s light (dark reddish/brown appearance)
Erythrasma
Corynebacterium minutissimum
Erythrasma vs Candida skin infection
Erythrasma: reddish brown with no satellite lesions
Candida: bright red with satellite lesions
-both interigo found in body folds
Panton-Valentine Leukocidin
Staph. aureus exotoxin
Nikolsky sign
when touched, and cleaves just below the stratum corneum
Fournier’s gangrene
necrotizing fasciitis that tends to occur in the perineum, groin and proximal thighs
Hidradenitis suppurativa
dysfunction of apocrine sweat glands and hair follicles causing recurrent inflammatory nodules develop in those areas, are painful and tend to break open leading to secondary, draining abscesses
raw oysters with liver failure or chucking oysters leading to necrosis fasciitis
Vibrio vulnificus
fish tank exposure
Mycobacterium marinum
45 degree hyphae on silver stain
Asperillosis
90 degree hypae on silver stain and association
Zygomycetes (Mucormycosis)
-associated with mucor lesion bc invades blood vessels which leads to ischemic/necrotic tissue
Tzanck smear with multinucleated giant cells
HSV 1/2
Varicella Zoster Virus can lay dormant in the…
dormant (latent) in the trigeminal and dorsal root ganglia
-trigeminal nerve can put the cornea at risk
how to distinguish between Varicella Zoster Virus and Variola Virus (small pox)
Varicella Zoster Virus:
- develops in crops over time
- doesnt include palms and soles
- sickness isn’t as severe
Variola Virus:
- crop develops at same time
- include palms/soles
- much more severe sickness
HVV6/7 (Roseola) vs Rubeola (measles)
Roseola
- rash: trunk -> extremities
- febrile seizures
- not as sick as rubeola
Rubeola
- Koplik’s spots
- cough, conjunctivitis and coryza (stuffy, runny nose)
- rash starts at back of ears and runs down body
- severely sick
HVV 8 is associated w
Kaposi’s sarcoma: angioproliferative tumor usually on the nose or inside the mouth
Herpes B virus(Herpes simiae) is commonly from
monkey bite
Hand, Foot and Mouth Disease cause and symptoms
Coxsackie virus A 16 and Enterovirus 71
-rash on the hands, feet, and inside the mouth
Herpangina cause and symptoms
Coxsackie virus A and B, Enterovirus 71
-grayish lumps form and develop into vesicles surrounded by erythema in the mouth and pharynx
Parvovirus B19
aka slap cheek or fifth disease
- children: red rash forms on cheeks and spares the nasolabial folds, forehead and mouth
- adults: palyarthrogias similar to RA
- bone marrow suppression and pancytopenia in immune compromised patients (AIDS), even leading to aplastic crisis
subacute sclerosing panencephalitis
- progressive brain inflammation caused by persistent infection with measles virus, which can be a result of a mutation of the virus itself
- occurs in rubeola (measles)
- give vitamin A
F protein
- rubeola
- mediates cell-to-cell fusion of infected to uninfected cells, forming giant cells
Mumps symptoms
- parotitis
- orchitis (red swollen testicles)
Rubella (German Measles) symptoms
- lymphadenopathy involves posterior cervical, posterior auricular and suboccipital nodes
- petechia on soft palate (*Forshheimer spots)
Acute HIV
- Days-weeks after exposure 50-90% experience symptoms of acute (i.e. primary infection) HIV, which is a mononucleosis-like symptoms
- RETRO-ORBITAL headache
- macular or maculopapular rash is non-pruritic, mostly on the upper body
Human Papillomavirus associated with
cervical and oropharyngeal cancers
Orf virus
handling infected sheep or goats
Molluscum Contagiosum
water warts
Dengue Fever vs. Chikungunya Fever symptoms
Dengue Fever (South/Central America, Australia, Africa)
- retro-orbital headache
- biphasic/saddleback fever
- “Islands of white in a sea of red” rash
- Faget’s sign
Chikungunya Fever
-same as Dengue fever but severe arthralgias
Heterophile antibody test
aka monospot test used to test for EBV
Give amoxicillin/ampicillin to EBV
hypersensitivity reaction rash all over body involving palms
anemia associated with EBV
autoimmune hemolytic anemia with IgM cold agglutinins
X-linked lymphoproliferative syndrome/Duncan’s syndrome
- associated in males develop during primary exposure
- a large proliferative response of polyclonal B/T cells, along with macrophages, in response to primary EBV infection
how to tell the difference between oral hairy cell leukemia and candida?
Oral Hairy Leukemia: can’t scrape of oral plaque
Candida: can scrape off oral plaque
cancers associated with EBV
Oral hairy cell leukemia
Hodgkin’s lymphoma
Burkitt’s lymphoma (afrcan epidemic)
NASOPHARYNGEAL CARCINOMA
B symptoms
- fever of more than 38°C for at least three days
- drenching night sweats
- unintentional weight loss >10% over a six-month period
- associated with Hodgkin’s and Non Hodgkin’s lymphoma and sometimes Tb
- these cancers can be associated w EBV
CMV illness association
CMV is the most common cause of fatal myocarditis in immunocompetent people
most common pathogen in liver transplant patients?
CMV
Involucrum
Layer of new bone growth, outside of existing bone (heterotopic ossification) that is infected, often surrounding a sequestrum
-associated with chronic osteomyelitis
Brodie’s abscess
an abscess walled off by fibrous and granulation tissue, usually associated with chronic osteomyelitis where frank bone and marrow tissue has been absorbed
Pott’s Puffy Tumor
a subperiosteal abscess due to osteomyelitis of the frontal bone of the skull as a result of acute or chronic sinusitis, intranasal cocaine or methamphetamine abuse or frontal sinus surgery
Osteomylitis in adults and children (location)
Adults: epiphysis
Children: metaphysis
Pott’s disease
osteomyelitis in the spine often caused by Tb
Batson’s plexus of veins
how infections (osteomyelitis) can spread from GI/GU (gram neg. rods) to the spinal cord
Osteomyelitis/Septic arthritis Kids: Nail through shoe: Unvaccinated kids: Sickle Cell: Animal Bite: Human Bite:
Kids: Kingella or Streptococcus agalactiae
Nail through shoe: Pseudomonas aeruginosa
Unvaccinated kids: Haemophilus influenzae
Sickle Cell: Salmonella
Animal Bite: Pasteurella or Bartonella
Human Bite:Eikenella and Strep. viridans
Sinus tracts to skin are often seen with chronic osteomyelitis cancer
squamous cell carcinoma
Nuclear medicine 3 phase bone scan
shows hot spots in bone (osteomyelitis)
-MRI is the diagnosis tool of choice
In sexually active young adults under 40, the most common cause of spontaneous, hematogenous, septic arthritis…
disseminated gonococcal infection
- tends to develop either around a recent menstrual period (within 7 days of start of menses) or post-partum
- lesion on hands
Viscosity drop test results meaning
-if the drop does not string –> infection/inflammation
Reactive arthritis symptoms
Triad: arthritis, conjunctivitis, and urethritis
- cant see, cant pee, cant climb a tree
- autoimmune reaction by prior infection of genitourinary system usually chlamydia
- Reiter’s Syndrome
G-CSF (Filgrastim/tradename-Neupogen) vs. G-CSF/polyethylene glycol
G-CSF (Filgrastim/tradename-Neupogen): short half-life
G-CSF/polyethylene glycol: longer half-life
-used in individuals with chemotherapy
Neutrophilia causes
corticosteroids/epinephrine: demmargination
Increased production: infection
Neutrophilia lab amount
25,000-50,000
Philadelphia chromosome and/or BCR-ABL gene mutation seen in
CML
Lymphocytosis causes
Increased bone marrow release: infection
CLL/ALL
Eosinophilia causes
Allergic disorders (asthma)
Parasitic infections
SLE
Hodgkin’s disease
Hyper IgE syndrome (Job’s syndrome)….
High IgE
rendition of baby teeth
skin issues
weird fascial features
Monocytosis causes
TB infection
acute monocytic leukemia, chronic myelomonocytic leukemia, Hodgkin’s disease
Basophilia causes
CML
Neutropenia causes
Acute viral syndromes Chronic viral syndromes (HIV) Rickettsial diseases Autoimmune diseases (SLE, RA) B12 and folate deficiency Ethanol direct toxicity in the bone marrow Chemotherapy and radiation therapy Methotrexate
Neutropenic Fever
A common complication seen during the neutropenic period, that tends to occur 7-14 days after a typical round of chemotherapy. The neutropenia lasts several days and can be profound with <100 total neutrophil count. Shortened, and often less severe, if G-CSF is given prophylactically by the Oncologist.
Pelger-Huet anomaly
dumbbell-shaped basophils