Endocrinology
Physician discussions on diabetes management, thyroid disorders, hormonal imbalances, and metabolic conditions.
Recent Discussions
How do you decide when to evaluate for central hypothyroidism in a patient with low-normal TSH and low free T4?
The differential in these patients is 1) mild subclinical hyperthyroidism 2) central hypothyroidism 3) normal variant related to assay detection limitations. It would be important to obtain a good history and try to identify any hypothyroid or hyperthyroid symptoms. Having said that, patients will u...
How do you counsel patients on the risk of hypothyroidism after radioactive ablation for hot nodules?
I tell my patients that the eventual likelihood of developing hypothyroidism after radioactive iodine treatment for autonomous thyroid nodules is dependent on the administered activity, but may be as high as 60%. Demir et al., PMID 35537668 Ceccarelli et al., PMID 15730415
Do you have a preference between RAI therapy and antithyroid medication for patients with Graves' hyperthyroidism and moderate-to-severe Graves' orbitopathy who are on glucocorticoid treatment?
I caution using RAI in Graves' disease with moderate to severe orbitopathy if I can. Surgery, if you have access to a high-volume thyroid surgeon, may be better vs long-term antithyroidal therapy. Obviously, a lot of individual patient factors can play into this decision. I would also avoid RAI for ...
Is there any benefit to trend testosterone and DHEA-S levels in patients with PCOS to determine response to therapy?
A recent guideline for the diagnosis and management of PCOS in patients states: “Repeated androgen measures for the ongoing assessment of PCOS in adults have a limited role” (International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome 2023). That said, I thi...
When do you check vitamin D levels in patients with depressive symptoms?
I routinely check 25-OH D in all my patients. Given that half the population is deficient and that we now know the role of vitamin D not only for bones but in mood, cognition, and immunity. We need to be aware of deficiencies and replete if low. Moreover, ideal levels are 60-80, not just over 29 as ...
Do you get DEXA scans routinely before starting ADT for prostate cancer or endocrine therapy for breast cancer?
When initiating long-term ADT, I order a DEXA scan, check vitamin D level, ensure adequate dietary calcium intake, and discuss weight-bearing exercise/refer to PT when appropriate. I also continue check DEXAs every 2 years unless they otherwise meet criteria for a bone-modifying agent (mCRPC with bo...
How would you empirically manage a large sellar/suprasellar mass with encasement of the right cavernous and terminal internal carotid arteries?
Knowing the histology of the mass would really help in creating more accurate treatment recommendations. A biopsy of a sellar mass is usually accomplished by an endonasal-endoscopic transsphenoidal approach utilizing the expertise of an ENT surgeon and a skull-base neurosurgeon. However, in this cas...
What are the indications, if any, for trending ACTH and cortisol levels in patients with adrenal insufficiency on steroid replacement therapy?
The only indication is if the patient has steroid-induced adrenal insufficiency and you are planning to wean the patient off steroids. In that case, I usually measure early AM cortisol and ACTH every 8 weeks. An increase in ACTH will be the first sign of HPA axis recovery. During this process, ACTH ...
Do you recommend completing a 1 mg dexamethasone suppression test for an asymptomatic incidental pituitary microadenoma?
Yes, if the patient has any feature of hypercortisolism, such as DM, HTN, osteoporosis, etc.See: Fleseriu et al., PMID 40555795"Screening should be performed for clinical suspicion based on features and/or comorbidities suggestive of Cushing disease, even in the absence of classic hypercortisolism c...
Is the risk of hypoglycemia significantly increased when using Mounjaro in combination with metformin for management of diabetes?
By itself, neither metformin nor Mounjaro (Tirzepatide) is associated with a significant risk of hypoglycemia. But the question is, if they are combined, does the risk go up? I am not aware of any studies that have specifically looked at this question, but keeping in mind the mechanism of action of ...