Table 10, Studies assessing MRI for locating nonpalpable undescended testicles - Evaluation and Treatment of Cryptorchidism

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Study N (N testicles) Quality	Reference Standard	Se (%)	Sp (%)	PPV (%)	NPV (%)	Accuracy (%)
Al-Shareef et al. 1996⁶³ 19 (24) Fair	Laparoscopy	33	100	100	18	41.7
Kantarci et al. 2010⁷⁸ (by 2 raters) 36 (38) Fair	Laparoscopy	85 85	100 75	100 97	44 44	86 84
Kantarci et al. 2010⁷⁸ (by 2 raters) 36 (38)^* Fair	Laparoscopy	88 82	75 75	97 97	43 33	86 81
Kantarci et al. 2010⁷⁸ (by 2 raters) 36 (38)^† Fair	Laparoscopy	91 88	100 75	100 97	57 43	92 86
Lam et al. 1998⁶⁵ 14 (17) Fair	Surgical exploration	82	NA	100	0	82
Kanemoto et al. 2005⁶⁸ 46 (55) Poor	Surgical exploration / laparoscopy	63	56	86	26	61.7
Kato et al. 2011⁶⁹ 56 (63)^† Poor	Laparoscopy / surgical exploration	80	100	100	39	82.5
Kier et al. 1988⁷⁰ 14 (15) Poor	Laparoscopy / surgical exploration	63	86	83	67	73.3
Maghnie et al. 1994⁷² 17 (21) Poor	Surgical exploration	69	100	100	50	76
Miyano et al. 1991⁷⁴ 17 (17) Poor	Surgical exploration	82	100	100	75	88
Siemer et al. 2000⁷⁶ 29 (29) Poor	Surgical exploration	68	100	100	33	72.4
Yeung et al. 1999⁷⁷ 21 (23) Poor	Laparoscopy / surgical exploration	41	100	100	7	43.5

: MRI = magnetic resonance imaging; N = number; NA = not applicable; NPV = negative predictive value; PPV = positive predictive value; Se = sensitivity; Sp = specificity
*: Diffusion-weighted MRI.
†: Conventional MRI and diffusion-weighted MRI.

Evaluation and Treatment of Cryptorchidism [Internet].

Comparative Effectiveness Reviews, No. 88.

Penson DF, Krishnaswami S, Jules A, et al.

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