| Lesion type | No. trials | Trial |
| Viable, non‐enhancing, or without surrounding oedema, or, if mixed, at least one viable lesion per participant | 7 | Alarcon 1989; Sotelo 1990; Garcia 1997; Del Brutto 1999; Alarcon 2001; Garcia 2004 |
| Non‐viable, enhancing or with surrounding oedema | 9 | Padma 1994; Baranwal 1998; Singhi 2000; Gogia 2003; Kalra 2003; Singhi 2003; Singhi 2004; De Souza 2009; Kaur 2009 |
| Any stage of lesion(s) or types of lesion not described | 7 | Sotelo 1988; Cruz 1995; Padma 1995; Garcia 1997; Gongora‐Rivera 2006; Carpio 2008; Das 2007 |
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