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Intravascular malignant lymphomatosis with neurologic presentation: factors facilitating antemortem diagnosis
Abstract:
Intravascular malignant lymphomatosis (IML) is a rare disorder of small and medium size vessels that frequently goes undiagnosed until the time of autopsy. The clinical courses of two such patients were examined to determine factors that would facilitate antemortem diagnosis. Both patients had mental status changes, pyramidal tract signs, and peripheral neuropathy. Despite postmortem evidence of widespread lymphocytic invasion of vessels throughout the body including peripheral and central nervous systems, neuroimaging studies, cerebrospinal fluid analysis, peripheral blood studies, and bone marrow biopsy failed to reveal diagnostic evidence of the underlying neoplastic process. Although markedly abnormal, nerve conduction studies were nonspecific. Familiarity with IML and its consideration in the differential diagnosis when central and peripheral nervous system dysfunction occur concurrently may guide the physician to tissue biopsy facilitating antemortem diagnosis and institution of appropriate therapy.
Insights
Intravascular malignant lymphomatosis (IML) is a rare vascular disorder. Early diagnosis requires considering IML in patients with concurrent central and peripheral nervous system dysfunction.
Area of Science:
- Neurology
- Oncology
- Pathology
Background:
- Intravascular malignant lymphomatosis (IML) is a rare neoplastic disorder affecting small and medium-sized vessels.
- IML often remains undiagnosed until autopsy due to its subtle and non-specific clinical presentation.
Observation:
- This study examined two patients with IML, focusing on clinical features that could aid in antemortem diagnosis.
- Both patients presented with altered mental status, pyramidal tract signs, and peripheral neuropathy.
Findings:
- Despite extensive systemic lymphocytic invasion of vessels, including CNS and PNS, standard diagnostic tests (neuroimaging, CSF, blood, bone marrow biopsy) were inconclusive.
- Nerve conduction studies, while abnormal, were not specific for IML.
Implications:
- Increased physician awareness of IML is crucial for differential diagnosis in cases of concurrent CNS and PNS dysfunction.
- Prompt tissue biopsy, guided by clinical suspicion, is essential for facilitating antemortem diagnosis and initiating timely treatment for IML.