Fresh bone-lesion flow cytometry supports Langerhans cell histiocytosis in two pediatric cases

Summary

Two pediatric LCH case reports describe flow cytometry on fresh bone-lesion tissue alongside pathology. This offers early feasibility evidence, without establishing diagnostic sensitivity or replacing integrated diagnosis.

Source Date

October 8, 2026

Source checked

October 10, 2026

Event Type

Peer-reviewed case reports

Event Date

October 8, 2026

Geography

Pediatric case series

Commercial Regulatory Status

Clinical research report; no regulatory authorization established.

Related CFCM Topics

Tissue cytometry; LCH; Academy; Validation; Technology Radar

Category

Technology

Primary source

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Facts supported by cited sources

Fresh tissue alongside pathology

Chun et al. reported two pediatric bone-lesion cases in BMC Pediatrics on 8 October 2026. Abnormal populations represented 30.67% and 16.09% of analyzed nucleated-cell events.

The cells expressed CD1a and CD207, with findings concordant with histopathology and immunohistochemistry. DOI: 10.1186/s12887-026-07803-5.

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Claims Requiring Caution

Two cases cannot estimate diagnostic sensitivity, specificity or a clinical detection limit. The reported percentages describe the analyzed samples. Sampling, tissue dissociation and cellular recovery affect what reaches the cytometer.

Why It Matters

Why it matters for CFCM

Fresh-lesion cytometry may contribute an additional immunophenotypic view when tissue is available. Plan specimen allocation with pathology and report the analyzed denominator explicitly. The practical lesson is to integrate complementary evidence and retain the limits of a small case series.

Conceptual fresh-lesion workflow linking multiparameter flow cytometry with histopathology and immunohistochemistry for integrated LCH diagnosis.
Original CFCM conceptual workflow, based on Chun et al., BMC Pediatrics, DOI 10.1186/s12887-026-07803-5. Credit: CFCM, 2026. No patient images or reproduced source figures.

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