The mass is homogeneously isointense in T1 and hypointense in T2, with a marked restriction of diffusion (ADC of 0.4), which indicates high cellularity of the lesion. After administration of intravenous contrast, there is a homogenous enhancement of the mass .
Clinical Perspective :Leukemia is the most frequent malignancy in pediatric age. Mainly patients with myologenic precursor leukemias develop solid tumors (Granulocytic Sarcoma).They can be localized in any part of the body, however they occur more frequently in the orbit and subcutaneous tissues. Clinically the proctosis is the most common findings in the orbit, followed by cellulitis and mass in the lacrimal gland. The great majority occur in children before 15 years of age, with a peak of age between 5 and 6 years, without presenting gender predilection(M: F = 1: 1). It can occur in association with: acute myeloid leukemia (AML), chronic myeloid leukemia (CML), myelofibrosis with myeloid metaplasia, hypereosinophilic syndrome and polycythemia vera (5-10% of patients with AML, 1-2% with CML). They can develop during a haematological disease or may precede it for months or years. Most are asymptomatic and when it occurs in patients without known hematologic disease, it is a sign of poor prognosis.The diagnosis of granulocytic sarcoma is highly suspicious in a patient with a history of leukemia and rapid progression proctosis. It is important to emphasize that it can be anatomopathologically and radiologically indistinguishable from lymphoma[1, 2, 3]
Imaging Perspective: Findings in the CT. It presents as a solid tumor, homogeneous slightly hyperintense, with slight homogenous enhancement after the administration of intravenous contrast. With possible extension towards intra- and extraconal fat, the extraocular musculature and the eyeball.
Magnetic Resonance Findings: In T1-weighted images, they are isointense or hypointense and in T2-weighted sequences they are isointense or hyperintense with homogeneous enhancement after intravenous conttase administration. We can see restriction in DWI/ADC. [1, 2, 3, 4]
Treatment; It is important to diagnose it by responding better to focal radiotherapy than to chemotherapy. However, early and aggressive chemotherapy offers the best possibility, although the final prognosis is still bad.[1, 2, 3, 4]
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 Granulocytic Sarcoma (Chloroma) Imaging Findings in Adults and Children Journal: American Journal of Roentgenology, 2002, 178: 319-325. Author: A. Guermazi1 2, C. Feger1, P. Rousselot3, M. Merad4, N. Benchaib1, P. Bourrier1, X. Mariette4, J. Frija1 and E. de Kerviler.
 Granulocytic sarcoma in children Journal: Neuroradiology, 2004, 46: 374–377. Author: L. Porto M. Kieslich D. Schwabe F. E. Zanella H. Lanfermann
 Acute Myeloid Leukemia Presenting as a Central Nervous System Mass in a Child: A Case Report Journal: J Pediatr Neurosci., 2018, Jan-Mar; 13(1): 84–87.. Author: Jagdish P. Meena, Menka Yadav, Aditya K. Gupta, Prashant Ramteke,1 Priyanka Naranje,2 and Rachna Seth
 Chloroma of Orbit: A Rare Initial Presentation in A Case of Acute Myeloid Leukemia Journal: International Journal of Anatomy, Radiology and Surgery,, 2015, Vol-4(3): 27-29. Author: RASHMI M NAGARAJU, BHIMARAO