hem/onc 2 Flashcards
Risk factors for thyroid cancer
- hx of radiation exposure
- Family hx of thyroid cancer
- subclinical hypothyroidism (elevated TSH)
- iodine deficiency
- *smoking and drinking have not been shown to increase risk for thyroid cancer and may actually be protective
- multiple nodules is not associated with increased risk
US findings of thyroid nodules that increases risk for malignancy
- size greater than 1 cm
- hypo echoic echotexture
- microcalcifications
- increased vascularity
- length greater than width
- infiltrative margins
physical exam features of malignant thyroid nodules
- rapid growth, firm, fixed
Clinical features of acute radiation pneumonitis + physical exam
- antibiotic-nonresponsive + appears like pneumonia (fever + cough + pleuritic heat pain + leukocytosis)
- exam = crackles and/or pleural rub
acute radiation pneumonitis radiographic features
- straight line effect (affected lung tissue is usually confined to the radiation treatment area and may form a distinct boundary with adjacent normal parenchyma)
treatment of acute radiation pneumonitis
prednisone for 2 weeks with a gradual taper
Cause of cancer-induced brachial plexopathy
- typically from direct invasion of breast or apical lung cancer or radiation injury
Presentation of cancer-induced brachial plexopathy
- severe pain at symptom onset
- weakness
+/- Horner syndrome
complex regional pain syndrome presentation
- throbbing pain + skin temperature changes + paresthesias
Physiologic cause of AKI in TLS
calcium-phosphate precipitation in renal tubules
Other sequela in TLS
- arrhythmias
- seizures
- sudden cardiac death
Criteria for diagnosis of TLS
2 or more of any of the following:
- uric acid 8 or higher
- K of 6.0 or higher
- phos of 4.5 or higher
- calcium of 7 or lower
- or 25% increase from baseline value
management of INR greater than 10 without bleeding
hold warfarin + administer 2.5-5 mg of oral vitamin K
management of INR 4.5-10
- hold warfarin + resume when INR is therapeutic
TRALI clinical features
within 6 hours of transfusion + acute onset dyspnea-hypoxemia + diffuse pulmonary infiltrates within 6 hours of a transfusion
TRALI pathophys
- not just transfusion of a patient with underlying heart failure
- it is likely due anti-leukocyte antibodies from donor’s plasma reacting with antigens on recipients leukocytes to intimate an inflammatory response within the pulmonary microvasculature
TRALI clinical course
Patients typically improve rapidly and most are extubated within 2 days
Management of TRALI
- supportive care
- no further plasma-containing blood products from the donor
Derm SE to know about with small molecule TKIs (imatinib, sorafenib, sunitinib)
- hand-foot skin reaction (HFSR): focal, tender lesions and hands and feet that appear as blisters in areas of friction or trauma
Management of hand-foot skin reaction (HFSR) from small molecule TKIs
- supportive care
- typically don’t need to discontinue treatment
Common association of Sweet’s syndrome
Heme malignancies
Is it possible to have myeloma without an M-spike or gamma gap?
YES – non-secretory myeloma
Next step of patient with CRAB symptoms with negative M spike and no gamma gap
urine immunofixation (need to rule out elevated protein in urine) to call it non-secretory and urine immunofixation further increases he sensitivity of identifying light or heavy chains
When DVT patients need to be admitted
- Significant RF’s for complications
- High bleeding risk
- Abnormal kidney function
- Hemodynamically unstable
- Unreliable social environment for administration of anticoagulation
- Large clot burden (iliofemoral DVT)
When is it safe to ambulate following DVT?
As soon as anticoagulant reaches therapeutic level (early ambulation has been shown to reduce complications)
Lab features of aplastic crisis
- 0% reticulocyte count
- profound anemia
What is hyper hemolytic crisis?
- sudden worsening of anemia with reticulocytosis that can present after acute sickling events (eg painful crisis, acute chest syndrome)
SE to know of with hydroxyurea
- myelosuppression (leukopenia or neutropenia)
VTE treatment of choice in pregnant patients + duration
- subcutaneous LMWH
- continue at least 6 weeks postpartum
- Xa inhibitors cross the placenta + there is inadequate information about their safety
- Unfractionated heparin can also be used for bridging during pregnancy
Etiology in stem of lymphadenopathy not resolving fully with abx
lymphoid lineage neoplasm
Initial step in evaluation of prolonged PT or PTT
mixing study
Urinary incontinence etiology + management following radical prostatectomy
- damaged urinary sphincter
- pelvic floor exercises with biofeedback
Patient subsets for which NOACs are not recommended
1) renal failure (CrClearance less than 30)
2) valvular heart disease
3) pregnant patients
First line treatment of VTE in patients with brain mets
LMWH
cancer types with brain mets that tend to bleed
melanoma, choriocarcinoma, thyroid carcinoma or RCC
Waldenstrom clinical features
- HSM + peripheral neuropathy + hyper viscosity syndrome (blurred vision, headache, vertigo)
- engorged retinal veins
Waldenstrom lab features
- elevated ESR
- Rouleaux formation
- elevated gamma gap
Labs in vWF
- typically prolonged PTT (but can be normal in some patients)