Table 2. Misdiagnosis types, prevalence, and delays for superior sulcus tumours.

Study	Misdiagnosis	Diagnostic delay (months)
Abdelrahman et al., 2010 (24)	Shoulder bursitis (n = unknown)	Range, 3.0–9.0 (mean: 5.0)
	Shoulder osteoarthritis (n = unknown)
	Cervical spine radiculopathy (n = unknown)
Deng et al., 2011 (9)	Shoulder osteoarthritis (n=13)	–
	Cervical spine osteoarthritis (n=3)
	Pulmonary tuberculosis (n=3)
Gu et al., 2012 (8)	Cervical spine radiculopathy (n=10)	Mean: 2.7
Ichinohe et al., 2006 (31)†	Lesion missed on imaging (n=78)	Range, 1.3–13.3 (mean: 4.8)
	Lesion misdiagnosed on imaging (n=20)
Villas et al., 2004 (45)	Cervical spine osteoarthritis (n=1)	Range, 3.0–24.0 (mean: 13.0)
	Cervical spine radiculopathy (n=1)
	Scapulothoracic pain (n=1)
	Brucellosis (n=1)
	Pancreatitis (n=1)

^†, study evaluated 166 radiographs among a sample of 50 patients.