Oncology Flashcards
Pattern: 4yr with fever, pallor, lymphadenopathy, bruising, anemia, thrombocytopenia, bone pain in long bones
ALL
What criteria define standard risk?
1-10yrs
WBC <50K
No prior steroids
No CNS or testicular involvement
What defines very high risk?
hypodiploid <44 chromosomes, MLLrearrangement 4:11, involves 11q23; induction failure
Define purpose of each phase of chemo: induction, consolidation, maintenance
Induction - max log to kill to induce remission
Consolidation - CNS sanctuary
Maintenance - additional cytoreduction or cure
Pattern: boys, WBC>100K, rapid growth rate, highest risk of testicular relapse, mediastinal mass, massive lymphadenopathy
T-cel leukemia/lymphomas
What is order of product buildup in tumor lysis?
1) K 12-24hr, 2) P 34-48hrs, 3) uric acid 48-72hrs
What happens to calcium in tumor lysis?
goes down
Describe treatment for tumor lysis
1) neutralize urine - alkaline prevents uric acid crystals, acid prevents calcium phosphate crystals
When does Ca/PO4 precipitate out
when product is >60
Spontaneous tumor lysis happens in which two cancers the most often?
Burkitt’s and T-cell leukemia/lymphoma
Describe EKG with K at 6, 7, 8
6 - peaked t waves 7 - prolonged PR 8 - absent pwaves/widened
Pattern: chloromas, leukemia cuts, gum hypertrophy, CNS disease, nucleated RBC, never involves the testicle
AML
What causes nucleated RBC in AML
ineffective erythropoiesis, functional asplenia, marrow replacement
What is typically seen in leukoerythroblastic reaction
primitive WBC, nucleated RBC, teardrop RBC
Pattern: HA, blurred vision, resp distress in AML
leukoerythroblastic reaction
High risk criteria for AML
Monosomy 7, monosomy 5/5q, FLT3internal trandem duplication
What is characteristic of AML of histolgy
Auer rods
Which genetics has good prognosis?
Trisomy 8 t(8:21)
Inv (16) or t(16:16)
Trisomy 21
What 7 genetic disorders are associated with leukemia
Down, Klinefelter, Blooms, NF, Kostmann’s neutropenia, Schwachman’s, Fanconi
Association: mediastinal mass
T cell ALL
DIC
M3
Extra-medullary
M4-5
Pancytopenia
megakaryoblastic
Pattern: adolescent, persistent neutrophila without infection, absolute basophila, thrombocytosis, increased B12
CML
What is the usual pattern of CML development
chronic –> accelerated –> blast (anemia, lymphadenopathy, thrombocytosis)
What are problems with Gleevec
resistance and CHF
What are criteria for poor prognosis of CML
massive HSM,
WBC >100K
Blasts, nucleated rbc
Platelet count <150K or >500K
Pattern: ab pain, RLQ mass, adenopathy below diaphragm
Burkitt’s
Pattern: jaw involvement n young children
African Burkitts
Criteria for high risk Burkitts
CNS, bone marrow, LDH >1000
Starry sky
Burkitt’s
EBV associated
Burkitts
Pattern: intra-thoracic, pleural effusion, SVC syndrome, lymphadenopathy above diaphragm
lymphoblastic lymphoma T-cell disease
Which cancer has associated cyclic fever
lymphoblastic lymphoma
Pattern: painless cervical/supraclavicular nodes, 2/3 mediastinal involvement, not below, chronic more so than lymphoblastic lymphoma
Hodgkin’s
Reed sternberg cells
Hodgkin’s disease
What are constitutional B symptoms in Hodgkin’s
unexplained fever >38
unexplained weight loss of 10% within 6 months
Drenching night sweats