Former Detroit Lions CB Stanley Wilson Jr. died from a pulmonary thromboembolism likely caused by deep vein thrombosis -- a blood clot in a deep vein -- according to an autopsy report obtained by TMZ Sports.
Wilson, who was 40 years old, was pronounced deceased at the Metropolitan State Hospital in Los Angeles County on February 1 ... after officials said he suddenly collapsed, never regaining consciousness.
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Stanley's family, however, wasn't buying the explanation .