Gastrointestinal, hepatic, and pancreatobiliary involvement by plasma cell neoplasms: clinicopathologic correlations in a retrospective cohort of 116 cases.

Aims: Plasma cell neoplasms (PCNs) may involve the gastrointestinal (GI) tract in two forms: plasmacytoma (PC), an isolated lesion that lacks marrow involvement, and extramedullary myeloma (EMM). However, previous literature on PCNs involving the GI tract, liver, and pancreas is limited. We evaluated the clinicopathologic features of the largest series of GI PCNs to date.

Intestinal T-cell lymphoma: A rare entity presenting with severe acute upper quadrant pain.

Primary gastrointestinal T-cell lymphomas are rare. Presenting symptoms can be non-specific, and imaging studies can show overlap with nonmalignant processes. Definitive diagnosis requires clinical suspicion and histologic evaluation with ancillary studies for appropriate disease classification and therapeutic intervention.