02Neoplasms
Neoplasms of haematopoietic or lymphoid tissues
2B31Histiocytic or dendritic cell neoplasms
2B31.6
category
Indeterminate cell histiocytosis
Definition A very rare dendritic cell tumour composed of spindle to ovoid cells with a phenotype that is similar to the Langerhans cells. Patients usually present with cutaneous papules, nodules, and plaques. Systemic symptoms are usually absent. The clinical course is variable.
Also indexed as
Indeterminate cell histiocytosis Indeterminate dendritic cell tumour
Nearby in Histiocytic or dendritic cell neoplasms
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
View this entity in the official WHO ICD-11 browser .
This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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