In high quantities, myeloperoxidase is responsible for the yellow-green color of pus (P, arrow) and of this extramedullary (meningeal -based) myeloid sarcoma (Q), hence, the name chloroma
in acute myeloid leukaemia: Case report.
In the setting of AML, leukemia cutis presents as a firm nodule with a greenish hue, known as a chloroma
or granulocytic sarcoma.
Myeloid sarcoma, also known as chloroma
, extramedullary myeloid tumor or granulocytic sarcoma, is an extramedullary tumor mass consisting of immature myeloid cells and/or myeloblasts.
It is usually associated with myeloid leukemia and is known by other names, such as chloroma
, myeloid sarcoma, and extra medullary myeloid tumor.
Key Words: Myeloid sarcoma, Promyelocytic leukemia, Cord compression, Chloroma
presenting as unilateral proptosis in a boy.
Children may present with life-threatening infections, granulocytic granuloma or chloroma
(most commonly orbital) and/or gum infiltration (Fig.
Preceded by Leukemia Cutis 7 years Earlier.
Also known as chloroma
, myeloblastoma, or extramedullary leukemia, granulocytic sarcomas can be found in almost every part of the body, such as the bones, orbit, paranasal sinuses, para- and intraspinal spaces, brain, skin, stomach, colon, kidney, breast, cervix, and vagina (Nishimura, Kyuma, Kamijo, & Maruta, 2004).
4, 5] These symptoms mimic various differential diagnosis which include inflammatory process, orbital cellulitis, metastatic neuroblastoma, chloroma
, lymphangioma and ruptured dermoid cyst, which can be differentiated on history and orbital imaging.
Extramedullary recurrence localized to the middle ear is rare and can present in the form of a granulocytic sarcoma also known as a chloroma
, a solid tumor of immature granulocytes.