Conclusion:
This case describes the first known instance of choledochoduodenal
fistula secondary to DLBCL of the pancreas, an extremely rare and
complex interplay between lymphoproliferative disorders and
gastrointestinal manifestations. While DLBCL can present with nodal or
extra-nodal involvement, its occurrence in the pancreas with subsequent
fistula formation is exceedingly rare within the literature. This case
underscores the importance of maintaining a high index of suspicion for
fistula formation in patients presenting with persistently deranged
liver function tests in the context of previously treated haematological
malignancies. Clinical vigilance, early identification and a
multidisciplinary approach are paramount for optimal management,
although further research is needed to identify the mechanisms driving
fistula formation.
Consent:Appropriate verbal and written consent was obtained from the patient.
Author Contributions: Author 1: Writing - Original Draft Preparation, Writing - Review and
Editing
Author 2: Writing - Original Draft Preparation, Writing - Review and
Editing
Author 3: Supervision
Author 4: Writing - Review and Editing, Supervision