Sheehan's syndrome differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

Sheehan syndrome must be differentiated from lymphocytic hypophysitis, pituitary apoplexy and SAH.

Differentiating Sheehan's Syndrome from other Diseases

Diseases	Course	History and Symptoms				Physical examination	Laboratory findings	Gold standard	CT/MRI	Other investigation findings
		Trumatic delivery	Lactation failure	Menstrual irregularities	Other features
Sheehan's syndrome	Acute	++	++	oligo/amenorrhea	-Adrenal insufficiency symptoms -Hypothyroidism features	-Breast tissue atrophy -decreased axillary and pubic hair growth	Pancytopenia Eosinophilia Hyponatremia Low fasting plasma glucose Decreased levels of anterior pituitary hormones in blood.	Dx is clinical with key feature of traumatic delivery.	Sequential changes of pituitary enlargement followed by shrinkage and necrosis leading to decreased sellar volume or empty sella.
Pituitary apoplexy		+/-	++	oligo/amenoorhea	Severe headache Nausea and vomiting Paralysis of eye muscles (diplopia) Changes in vision			MRI	CT scan without contrast is the initial test of choice. Pituitary hemorrhage on CT presents as a hyper-dense lesion. MRI is done in cases of inconclusive CT. An MRI is more sensitive in identifying intrasellarmass and soft tissue changes	Blood tests may be done to check: PT/INR and aPTT Pituitary hormonal assay
Lymphocytic hypophysitis		+/-	+		Generalized headache Retro-orbital or Bitemporal pain Most often seen in late pregnancy or the postpartum period Mass lesion effect such as visual field defects Hypopituitarism			Pituitary biopsy	CT & MRI typically reveal features of a pituitary mass.	The most accurate test is a pituitarybiopsy which will show lymphocyticinfiltration.
Subarachnoid hemorrhage		-	-		Severe headache Thunderclap Described as the worst headache of life Double vision Nausea and vomiting Symptoms of meningeal irritation Sudden decreased level of consciousness			Digital subtraction angiography	The modality of choice for diagnosis of subarachnoid hemorrhage is noncontrast head computed tomography (CT), with or without lumbar puncture.[1] CT shows hyperattenuating material filling the subarachnoid space.	Lumbar puncture (LP) is necessary when there is a strong suspicion of subarachnoid hemorrhage. LP will show: Elevated opening pressure Elevated red blood cell (RBC) Xanthochromia
Empty sella syndrome	Chronic	-	+
Simmond's disease/Pituitary chachexia			+
Primary Hypothyroidism		+/-
Primary Hypogonadotropic hypogonadism		-
Hypoprolactinemia		-
Panhypopituitarism		-
Primary adrenal insufficiency		-

Differentiating Sheehan's syndrome on the basis of

Diseases	Course	History and Symptoms	Physical Examination	Laboratory Findings	Other Findings
							Physical Finding 1
Sheehan's Syndrome	Acute	+
Pituitary apoplexy
Lymphocytic hypophysitis
SAH
Empty sella syndrome	Chronic
Primary Hypothyroidism
Hypogonadotropic Hypogonadism
Hypoprolactinemia

Use if the above table can not be made

Differential Diagnosis	Similar Features	Differentiating Features
Differential 1	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 2	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 3	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 4	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].
Differential 5	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] also observed in [disease name].	On [physical exam; history; diagnostic test; imaging], [Differential 1] {has; demonstrates} [feature 1], [feature 2], [feature 3] that distinguish it from [disease name].