A B.C. Supreme Court judge blocked a teenager from undergoing a gender-affirming double mastectomy in Vancouver earlier this month, granting the 17-year-old's disapproving mother an order to stop the operation the day before it was scheduled to go ahead.

The teenager, who was assigned female at birth and began hormone treatment in July as part of their transition, was set to have the mastectomy last Friday. The mother sued the teenager's doctor and cosmetic surgeon on Nov. 3, demanding they stop treating her child without her permission until the courts can rule on consent.

Justice Shelley C. Fitzpatrick granted the mother's request and issued a temporary injunction blocking the surgery on Thursday, about 24 hours before the scheduled operation.

The CBC is not identifying the teenager, their mother and health professionals named in the case in order to protect the teenager's privacy. The woman said courts need to decide whether her child has the "mental and emotional fitness" and "maturity" to understand their "condition" and the irreversible nature of the surgery.

In a statement through her lawyer, the mother referred to her child as "caught up in a fad." She went on to blame SOGI 123 for "pushing depressed and anxiety-ridden girls to gender-change clinics when what they need is psychiatric care." SOGI 123 is a learning resource and toolkit the B.C. Ministry of Education offers to teachers to make schools more inclusive and address discrimination and bullying around sexual orientation and gender identity. Read more via CBC