Magnetic resonance imaging features of intrahepatic extramedullary hematopoiesis: Three case reports

Table 1 Clinical and magnetic resonance imaging features of 9 cases with intrahepatic extramedullary hematopoiesis

Case/Ref.	T1WI (compared to liver)	T2WI (compared to liver)	In/out-phase	Enhancement	Underlying condition
Case 1	Hypointense	Heterogeneous	In-phase low, out-phase high	Heterogeneous and persistent	Thyroid carcinoma and lung adenocarcinoma
Case 2	Slightly hypointense	Slightly hyperintense	In-phase low, out-phase high	Delayed	Hodgkin’s lymphoma
Case 3	Hypointense	Hyperintense	In-phase low, out-phase high	Avid in arterial phase and “washout” in later phases	Unknown
Lee et al[2]	Slightly hypointense	Hyperintense	NA	Homogeneous, avid and persistent	Idiopathic myelofibrosis
Belay et al[8]	Hypointense	Hypointense1	NA	Avid and persistent	Myelodysplastic syndrome
Zhang and Zhu[9]	Slightly hypointense	Hyperintense	Without signal intensity change	Homogeneous avid in arterial phase and isointense in later phases	Idiopathic myelofibrosis
Tamm et al[12]	Hypointense	Hyperintense	NA	Delayed	Gaucher disease
Jelali et al[24]	Slightly hyperintense	Slightly hyperintense	NA	Delayed	Sickle cell disease
Wong et al[17]	Hyperintense	Heterogeneous	NA	Delayed	β-Thalassemia

¹Evaluated by T2^*WI.

WI: Weighted image; NA: Not performed or evaluated.