This neoplasm is not reportable.

Name

Acute leukemia of ambiguous lineage, not otherwise specified

Not Reportable

This neoplasm is not reportable

Definition

Acute leukemias of ambiguous lineage, not otherwise specified (NOS), express combinations of markers that do not allow for their classification as either acute undifferentiated leukemia, or mixed-phenotype acute leukemia and definitive classification along a single lineage is difficult.

Abstractor Notes

The diagnosis of acute leukemia of ambiguous lineage, not otherwise specified does not have an ICD-O-3 code assigned. If this diagnosis is in the medical report, assign histology code 9801/3 for Acute undifferentiated leukemia, NOS.

Sources

Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J (Eds):
WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues (Revised 4th edition)
IARC: Lyon 2017
Section: Acute leukemias of ambiguous terminology
Pages: 187
Glossary