63 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
• Low TSH, Low ... • Low TSH, normal ... : Work-up similar ... • Low TSH, high ... High or normal TSH
Evaluation of Secondary Hypertension
 • Primary aldosteronism - PRA, PAC
 • Renal artery stenosis - Renal
metanephrines • Hypothyroidism ... - TSH, T3, fT4 ... • Hyperthyroidism ... - TSH, fT4 • Cushing ... resistant #Evaluation #workup
Algorithm for the diagnostic workup of hyperthyroidism. (T3 = triiodothyronine; T4 = thyroxine; TSH = thyroid-stimulating
the diagnostic workup ... of hyperthyroidism ... T4 = thyroxine; TSH ... #hyperthyroidism ... algorithm #diagnosis #workup
Amenorrhea - Differential Diagnosis Algorithm
Elevated FSH
 • Premature Ovarian Failure
 • Menopa use
 • Spontaneous
Bleed With
Algorithm Elevated FSH ... Challenge • Hypothyroidism ... • Hyperthyroidism ... Hyperprolactinemia Organic Cause ... endocrinology #causes
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup ... (↑↔TSH, ↑Total ... (↓TSH, ↔Total ... (↓TSH, ↑Total ... unlikely (↔TSH,
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... (low TSH, High T4 ... affects diagnostic workup ... #Hyperthyroidism ... Diagnosis #Algorithm #Workup
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - Causes ... Hypermagnesemia, Hypothyroidism ... Deep coma (any cause ... Hypomagnesemia, Hyperthyroidism ... differential #diagnosis #table
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Hyperthyroidism ... Positive anti-TSH ... Multinodular Goiter - TSH ... Struma Ovarii #Hyperthyroidism ... endocrinology #causes
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Thyroid Disease Hyperthyroidism ... high; in some cases ... iodine uptake Hypothyroidism ... positive • Ablative hypothyroidism ... • Infantile hypothyroidism
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
• ACTH • TSH ... • LH/FSH ... Hypothyroidism) ... endocrinology #causes