Table 1 Incidence of isolated splenic metastasis from lung cancer

First author [Ref.]	Primary tumour type	Interval from primary tumour to metastasis	Follow-up	Splenectomy	Symptoms of metastasis
Klein [6]	Bronchioalveolar carcinoma	20 months	Died 49 months after splenectomy	Yes	Abdominal pain
Edelman [7]	Lung poorly differentiated adenocarcinoma	0	No data		Asymptomatic
Macheers [8]	Lung large cell, undifferentiated	0	Died 1 month after splenectomy	Yes	Asymptomatic
Gupta [9]	Right hilar neoplasm	0	Died 8 weeks after splenectomy	Yes	Splenic rupture
Kinoshita [10]	Lung squamous cell	14 months	Died 27 months after splenectomy	Yes	Asymptomatic
Takada [11]	Bronchopulmonary carcinoid	8 yr		Yes	Abdominal pain
Massarweh [3]	Lung adenocarcinoma	0		Yes	Splenic rupture
Schmidt [12]	Lung moderately differentiated adenocarcinoma	4 yr		Yes	Asymptomatic
Pramesh [13]	Lung squamous cell	2 months		No	Asymptomatic
Sanchez-Romero [4]	Lung adenocarcinoma	0		Yes	Abdominal pain
Van Hul [14]	Lung adenocarcinoma	2 yr		Yes	Asymptomatic