Emma Holliday for Surgery: Part VII Flashcards
First step in working up a thyroid nodule
Check TSH
You check the TSH for a thyroid nodule, what next?
If low, do a RAIU scan to find the “hot nodule.” Excise it or kill it with radioactive iodide.
If normal, get an FNA
FNA of your nodule is done. What next?
If benign, leave it alone.
If malignant, excise it and check pathology
If indeterminant, re-bx it or check a RAIU scan
If the nodule comes back cold, what next?
Excise it, check pathology
5 types of cold nodular pathologies
Papillary Follicular Medullary Anaplastic Thyroid lymphoma
Pathology of papillary cold thyroid nodule
MC type, spreads via lymph, psammoma bodies
What pre-disposes someone to a thyroid lymphoma
Predisposed by hashimotos
Pathology of follicular cold thyroid nodule
Spreads via the blood.
Better excise the whole thing
Pathology of Medullary cold thyroid nodule
Associated with MENII. Look for pheochromocytoma and hypercalcemia. You wil lsee amyloid and calcifications in pathology
Pathology of Anaplastic cold thyroid nodule
80% mortality in first year. No bueno.
4 functional versions on an adrenal nodule
Pheochromocytoma
Primary aldosteronism
Adrenocortical carcinoma
Cushing or silent cushing syndrome
Features of Pheochromocytoma and how we test for it
HTN, catechol symptoms
Get urine and plasma-free metanephrines
Features of primary aldosteronism and how we test for it
HTN, low K+ and low PRA
Plasma aldosterone-to-renin ratio
Features and testing for adrenocortical carcinoma
Virilization or feminization
Get a Urine 17-ketosteroid
Features and testing for cushings
Cushing symptoms or normal exam results otherwise
Test with an overnight 1-mg dexamethasone test
If the adrenal nodule is less than 5cm and non functional, what do you do
Observe with CT scans every 6 months
What if the adrenal nodule is greater than 6 cm or functional
Surgical excision.
Causes of hypothyroidism and what we see in the patient and labs
Typically from thyroidectomy
We see perioral numbness, chvostek’s and Trousseaus due to low calcium
Labs: Low calcium, high phosphate and low PTH
Presentation of hyperparathyroidism
Usually asymptomatic increase in calcium but can present with kidney stones, abdominal or psychiatric symptoms
Labs for hyperparathyroidism
High calcium, low phosphate, high Vitamin D and high parathyroid hormone
Diagnosing hyperparathyroidism
FNA of suspicious nodules. Can use Sestamibi scan
Treating hyperparathyroidism:
Surgical removal of adenoma. If hyperplasia, remove all 4 glands and implant 1 in the forearm
MEN 1
Pituitary adenoma, parathyroid hyperplasia, pancreatic islet cell tumor
MEN 2a
Parathyroid hyperplasia, medullary thyroid cancer, pheochromocytoma
MEN2b
Marfanoid, medullary thyroid cancer and pheochromocytoma
U/S vs MRI for working up a breast mass
U/S can tell if solid or cystic. MRI is good for eval dense breast tissue, evaluating nodes and determining recurrent cancer.
–Best imaging for the young breast
–U/S good for determining fibroadenoma/cysto-sarcoma phyllodes.
FNA vs. aspiration vs. cytology
Aspiration of fluid if cystic, FNA for cells if solid
–Send fluid for cytology if its bloody or recurs x2
Symptoms of fibrocystic change and solutions to help with this
–Fibrocystic change: cysts are painful and change w/ menses. Fluid is typically green or straw colored.
•Restrict caffiene, take vitamin E, wear a supportive bra
When do we do an excisional biopsy of breast tissue?
•Excisional biopsy if palpable or if fluid recurs
Risk factors for breast cancer
RF: BRCA1 or 2, person hxof breast cancer, nulliparity, endo/exogenous estrogen.
What do we do for DCIS?
Either excision w/ clear margins or simple mastectomy if multiple lesions (no node sampling) + adjuvant RT.
What do we do for LCIS
More often bilateral. Consider bilateral mastectomy only if +FH, hormone sensitive, or prior hxof breast cancer
What do we do for Infiltrating ductal/lobular carcinoma
–If small and away from nipple, can do lumpectomy w/ ax node sampling. Adjuvant RT. Chemo if node +. Tamoxifenor Raloxifen if ER +
–Modified radical mastectomy w/ ax node sampling w/o adjuvant RT gives same prognosis.
What is Paget’s Dz of breast and what do we do about it
Looks like eczema of the nipple. Do mammogram to find the mass.
Symptoms of inflammatory breast cancer
Red, hot, swollen breast. Orange peal skin. Nipple retratction
What do we do about basal cell carcinoma?
Shave or punch bx then surgical removal (Moh’s)
Precursor lesion to squamos cell
Actinic keratosis or keratoacanthoma
How do we treat the keratosis before it becomes a squamos cell?
5FU or excision
How do we treat squamos cell carcinoma?
Excisional bx at edge of the lesion then wide local excision. Rads can be used for tough locations
Many forms of melanoma. What is the worst prognosis one and the best prognosis one?
Superficial spreading = best prog and is also the most common
Nodular is poor prognosis.
This melanoma is on the palms, soles, mucous membranes in darker races
Acrolintiginous
Lentigo maligna is found where?
Melanoma on the head and neck, actually has a good prognosis
1 prognostic indicator for melanoma?
Depth.
First step when we see melanoma?
FULL THICKNESS bx. Not just bx. Remember depth is the most important thing.
Treatment for melanoma
Excision with 1 cm margins if less than 1 mm thick. 2 cm margin if 1-4 mm thick. 3 cm margin if more than 4 mm thick.
These drugs may help after biopsy for melanoma
High dose IFN or IL-2 may help
This is often confused wit ha bruised muscle
soft tissue sarcoma
Dx sarcoma?
Biopsy. NOT AN FNA.
Excisional if less than 3 cm, incisional otherwise.
Tx for sarcoma
Wide local excision or amputation + RT
First site for sarcoma to spread to
Lungs (hematogenously).
If sarcoma spreads to the lungs, do we start chemotherapy?
Not yet.
You can do a wedge resection if this is the only met and the primary mass is under control.
Liposarcomas usually arise from:
99% DO NOT come from Lipomas.
Hard round mass on extremity:
Fibrosarcoma/Rhabdomyosarcoma/Lymphangiosarcoma
These masses can occur in areas of chronic lymphedema
Fibrosarcoma/Rhabdomyosarcoma/Lymphangiosarcoma
Rule of 7s for a neck mass
7 days is inflammatory
7 months is a cancer
7 years is congenital
Most commonly a neck mass is just a reactive lymph node. So first step:
Look at teeth, tonsils, etc for inflammatory lesion or process
If you find a lesion on inspection of a neck mass work up what do you do
Wait 2 weeks an FNA if still present
If lymph node is firm and rubbery :
Excisional bx, look for lymphoma
/in hodgkins lymphoma, what will we see on histo?
R-S cells. Lymphocyte predominance is a good prognostic indicator
In non-hodgkins, what are the good prognostic indicators on histology
nodular and well differentiated
Brancial vs thyroglossal duct cyst
Midline = Thyroglossal. Remove this surgically
Anterior to SCM = branchial
If mass is spongy, diffuse and LATERAL to SCM what does this indicate?
Cystic hygroma 2/2 Turners, Downs, Klinefelters