me Shared "Endocrine-L" - 13 Picmonics

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Endocrine-L

Hashimoto's Thyroiditis
Symptoms
Hypothyroidism with Bouts of Hyperthyroidism
Enlarged, Nontender Thyroid
Mechanism
Autoimmune
Anti-Thyroid Peroxidase (TPO)
Anti-Thyroglobulin
Lab Findings
Hurthle Cells
Lymphoid Follicles
Associations
HLA-DR5 and HLA-DR3
Increased Risk Of Non-Hodgkin Lymphoma
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2 mins
Medullary Thyroid Carcinoma
Sporadic and Familial Types
Arises from Parafollicular C cells
Produces Calcitonin
Hypocalcemia
May Produce ACTH
Diagnosis
Sheets of Cells With Amyloid Deposition
Increased calcitonin with Pentagastrin Infusion
Risk Factors
MEN 2A and 2B
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2 mins
Levothyroxine
Indications
Hypothyroidism
Myxedema Coma
Mechanism of Action
Isomer of thyroid hormone (T4)
T3 has higher potency
Side Effects
Hyperthyroid symptoms
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56 secs
MEN 2B (Multiple Endocrine Neoplasia)
Pathophysiology
RET Gene
Autosomal Dominant
Signs and Symptoms
Medullary Thyroid Carcinoma
Pheochromocytoma
Marfanoid Body Habitus
Oral Ganglioneuromatosis
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55 secs
MEN 2A (Multiple Endocrine Neoplasia)
Pathophysiology
Autosomal Dominant
RET Gene
Signs and Symptoms
Medullary Thyroid carcinoma
Calcitonin
Parathyroid
Pheochromocytoma
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44 secs
MEN 1 (Multiple Endocrine Neoplasia)
Pathophysiology
Autosomal Dominant
Menin Mutation (Tumor Suppression Gene)
Chromosome 11
Signs and Symptoms
Pancreatic Endocrine Tumors
Pituitary Tumors
Parathyroid Adenomas
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2 mins
Propylthiouracil (PTU) and Methimazole (MMI)
Indications
Hyperthyroidism
Mechanism
Inhibits Thyroid Peroxidase
PTU Blocks Peripheral Conversion of T4 to T3
Side Effects
Agranulocytosis
Skin Rash
Hepatotoxicity (PTU)
Teratogen (MMI)
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1 min
Papillary Thyroid Carcinoma
Characteristics
Most Common Thyroid Cancer
Excellent Prognosis
Lymphatic Spread
Diagnosis
Orphan Annie Nuclei
Empty Nuclei with Central Clearing
Psammoma Bodies
Risk Factors
Head and Neck Radiation
RET and BRAF Mutations
Gardner Syndrome
Cowden Syndrome
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2 mins
Follicular Thyroid Carcinoma
Characteristics
Most Common to Present as Solitary Cold Nodule
Hematogenous Spread
Good Prognosis
Histological findings
Uniform Follicles
May Invade Capsule
Risk factors
Head and Neck Radiation
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1 min
Ovulatory Hormones I - Follicular Phase
0-14 Days
GnRH Stimulates FSH and LH
Follicle Secretes Estrogen
Negative Feedback from Estrogen
Increased Estrogen Leads to Positive feedback
FSH and LH Surge
Increased Estrogen from Follicle
LH Spike Leads to Ovulation
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2 mins
Ovulatory Hormones II - Luteal Phase
Days 15-28
Corpus Luteum
Secretes Progesterone
Negative Feedback inhibits FSH and LH
No pregnancy forms Corpus Albicans
Stops Estrogen Secretion
Endometrial Sloughing - Menses
GnRH secretion produces new follicular phase
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2 mins
Carcinoid Syndrome
Pathophysiology
Neuroendocrine Cells
Serotonin
Appendix
Diagnosis
Chromogranin A
Neuron Specific Enolase
Dense Core Bodies on EM
Signs and Symptoms
Symptoms When Metastasize to Liver
Flushing
Wheezing
Right Heart Murmur
Diarrhea
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4 mins
Anaplastic Thyroid Cancer
Pathophysiology
Rapidly Progressive
Poor Prognosis
Hoarseness
Diagnosis
Invades Local Structures
Mixed Morphology
Risk Factors
Multinodular Goiter
Older Age
History of Thyroid Disease
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2 mins

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