Multilocular thymic cysts can be easily misdiagnosed as malignant tumor on computer tomography: A case report

Table 1 Tumor markers of the patient

Tumor marker	ng/mL
Alpha-fetoprotein	1.5
Carcinoembryonic antigen	3
Carbohydrate antigen 19-9	48.4
Neuro-specific enolase	24.8
Ferritin	1000
Tumor specific factors	66.2

Table 2 Reported cases of multilocular thymic cyst containing solid density in adults

Ref.	Number of cases	CT value	Histopathologic of solid density
Jin et al [12]	28	38.61 ± 15.01 HU	N
Matsumoto et al[14]	1	NA	Lymphoid hyperplasia
Chalaoui et al[15]	1	35 HU	Hemorrhage
Kim et al[16]	1	NA	Lymphoid hyperplasia and fibrous septa
Mohakud et al[17]	1	60-80 HU (high density areas)	Hemorrhage
Nagata et al[19]	1	NA	Cholesterol granuloma
Choi et al[18]	8	Ranged -20 to 17 HU	Thick inflammatory thymic tissue, thymic hyperplasia and calcification
Izumi et al[7]	4	NA	Foreign body granulomas
Ridder et al[20]	2	NA	Hemorrhage and cholesterol granuloma
Damaskos et al[1]	1	NA	Calcification and fragments of thymic tissue

CT: Computer tomography; NA: Not applicable.