Systemic diffuse large B-cell lymphoma manifesting initially as scalp hematoma after an acute head injury: Case report and literature review

Systemic diffuse large B-cell lymphoma (DLBCL) manifesting as a scalp mass is rare but serious and must be treated aggressively, with neurosurgical intervention. We report a rare case of 56-year-old woman with a 1-month history of persistent scalp hematoma over the left parietal and occipital regions of the scalp after blunt head injury which was diagnosed as DLBCL after the excision.