ADC map differentiation between tumoral and non tumoral tissue

ADC MAP DIFFERENTIATION BETWEEN TUMORAL AND NON TUMORAL TISSUE: -With high cellularity lesion , has a low ADC map value resulting in hypo intense signal. -While in low cellularity lesion such as edema , inflammation , fibrosis , and necrosis shows high ADC map signal.

CT image of biopsy proven case of squamous cell carcinoma of left tonsil. http://sumerdoc.blogspot.com/2009/07/carcinoma-tonsil-ct.html

Figure 6. Contrast enhanced axial CT showing recurrence of nasopharyngeal carcinoma in the right nasopharynx (arrow) invading posterolaterally.

http://bjr.birjournals.org/cgi/content-nw/full/75/892/345/F6

retinoblastoma+calcification

This tumor presents as a large calcification.

http://www.radiologyassistant.nl/en/489ca7c544b19#a48bda360dd189

retinoblastoma

a 13 month old female with bilateral lesions as a result of bilateral retinoblastoma.

http://www.radiologyassistant.nl/en/489ca7c544b19#a48bda360dd189

intra-orbital calcification

- In adults the most common intraorbital calcifications occur at the tendinous insertion of the ocular muscles.Other common calcifications are at the optic nerve head within the eye, also called 'optic disc drusen'.
-In children calcifications in the globe means retinoblastoma until proven otherwise even if it is bilateral.


http://www.radiologyassistant.nl/en/489ca7c544b19#a48bda360dd189

Fungal sinusitis of a four-year-old girl with myeloid leukaemia. CT of the sinuses revealed opacification of the maxillary sinuses with bone destruction of the medial wall. Mucor species was isolated from maxillary sinus washout.

http://www.blogger.com/www.biij.org/2006/2/e21/

Neck CT scan demonstrating large thyroid lymphoma

http://www.google.com.eg/imgres?imgurl=http://www.ispub.com/ispub/ijorl/volume_8_number_1_7/non_hodgkin_s_lymphoma_of_the_neck_an_important_lesson_in_early_diagnosis/lymphoma-fig1.jpg&imgrefurl=http://www.ispub.com/journal/the_internet_journal_of_otorhinolaryngology/volume_8_number_1_7/article_printable/non_hodgkin_s_lymphoma_of_the_neck_an_important_lesson_in_early_diagnosis.html&usg=__XWpv3tJWMhvLAMqTruQS-s4Vu0Y=&h=531&w=528&sz=30&hl=en&start=17&itbs=1&tbnid=UB6bVtT8GfYHQM:&tbnh=132&tbnw=131&prev=/images%3Fq%3Dlymphoma,ct%26hl%3Den%26sa%3DG%26gbv%3D2%26tbs%3Disch:1

orbital lymphoma

This is 68 year old man with bilateral propotosis and lymphadenopathy. CT images are characterstic of orbital lymphoma.

sumerdoc.blogspot.com/2009/11/orbital-lymphom...

Reference:www.radiologyassistant.nl