Akciğer Kanserli Hastalarda Solid Beyin Metastazlarının Difüzyon MRG ile Değerlendirilmesi

Beyine en sık yayılım yapan primer maligniteler akciğer kanseri, meme kanseri, kolorektal kanserler, renal hücreli kanser ve melanomdur. Akciğer kanserlerinde tedavinin planmasında ve prognozun belirlenmesinde en önemli faktörler hücre tipi ve evrelemedir. Tümörler histolojik tiplerine göre farklı metastaz gücüne sahiptirler. Beyin tümörlerinde difüzyon ağırlıklı görüntüme ile elde edilen ADC değerlerinin tümor selüleritesinin temel göstergesi olarak değerlendirilmiştir. Bu çalışmanın amacı akciğer kanserli olgularda solid beyin metastazlarının histopatolojik tiplerine ve soliter ve multıpl özelliklerine göre difüzyon ağırlıklı görüntüler kullanarak kantitatif ADC değerlerini karşılaştırmaktır. Çalışmamızda akciğer kanserli hastalarda beyin metastazlarınından, metastaz çevresindeki ödemden, ADC değerleri ve metastaz ADC değerinin normal parankim göre ADC oranları histopatolojik tiplerine göre karşılaştırıldı ancak istatistiksel olarak anlamlı sonuç bulunamadı. Bununla beraber multıpl beyin metastazı olan hastalarda, tek metastazı olan hastalara göre ADC değerleri ve ADC oranları düşük saptanmış olup istatistiksel olarak anlamlıydı. Sonuç olarak akciğer kanserli hastalardaki beyin metastazlarındaki tümör selüleritesinin histopatolojik tanıdan bağımsız olabileceğini, bununla beraber multıpl metastazlarda, tek metastazı olan lezyonlara göre düşük ADC değerlerinin saptanması, multıpl metastazların tümör selüleritesinin daha fazla olduğunu düşündürmektedir. Bu durumun multipl metastaz yapan akciğer kanserlerinde histopatolojik tanıdan ziyade tümör greydinin daha ön planda olabileceğini, düşük ADC değerlerinin bu duruma bağlı olduğunu sanmaktayız.

Evaluation of Solid Brain Metastases in Lung Cancers with Diffusion MRI

The primary malignant tumors that mostly metastasis to the brain are lung cancers, breast cancers, colorectal cancers, renal cell cancer and malanomas. The most important factors that act in the planning and the prognosis of lung cancers are cellular type and staging. Tumors have different metastasis power with respect to the histologic types. The ADC values obtained from the diffusion weighted imaging in brain tumors were evaluated as the basic marker of the tumor cellularity. The aim of this study is to compare the quantitative ADC values in solid brain metastases with lung cancer cases according to the histologic types, solidarity and multiplicity using diffusion weighted images. In our study, the ADC and the metastatic ADC values were compared with normal parenchyma according to the histopathologic types regarding the edema around the metastasis of the brain, but a statistically significant difference was not detected. However, in cases with multiple brain metastases had lower ADC values and rates when compared with single metastases and it was found statistically significant. In conclusion, the tumor cellularity of the brain metastases in lung cancers may be independent from histopathologic diagnosis, and that the detection of lower ADC values in multiple metastases when compared with single metastases makes us think that multiple metastases have higher degree of tumor cellularity. These findings demonstrate that in lung cancer cases with multiple metastases, the tumor grade would be more important and that the lower ADC values would be due to this situation.

___

  • 1. Ewend MG, Carey LA, Morris DE, Harvey RD, Hensing TA. Brain metastases. Curr Treat Options Oncol. 2001;2(6):537-47.
  • 2. Mogulkoç . Akciğer kanserlerinin semptomları, bulguları. Haydaroglu A. editor Akciger Kanserleri: Tanı ve Tedavi. İzmir: Ege Üniversitesi Basımevi, 2000:57-76.
  • 3. Read C, Janes S, George J, Spiro S. Early lung cancer: screening and detection. Prim Care Respir J. 2006;15(6):336-6.
  • 4. Risau W. Mechanisms of angiogenesis. Nature. 1997;17;386(6626):671-4.
  • 5. Folkman J. Tumor angiogenesis: Therapeutic implications. N Engl J Med. 1971;18;285(21):1182-6.
  • 6. Sugahara T, Korogi Y, Kochi M, Ikushima I, Shigematu Y, Hirai T, Okuda T, Liang L, Ge Y, Komohara Y, Ushio Y, Takahashi M. Usefulness of diffusion-weighted MRI with echo-planar technique in the evaluation of cellularity in gliomas. J Magn Reson Imaging. 1999;9(1):53-60.
  • 7. Schaefer PW, Grant PE, Gonzalez RG. Difussion-weighted MR imaging of brain. Radiology. 2000;217:331-45.
  • 8. Reiche W, Schuchardt , Hagen T, l'yasov KA, Billmann P, and Weber J. Differential diagnosis of intracranial ring enhancing cystic mass lesions-Role of diffusion-weighted imaging (DWI) and diffusion-tensor imaging (DTI). Clin Neurol Neurosurg. 2010;112(3):218-25.
  • 9. Ebisu T, Tanaka C, Umeda M, Kitamura M, Naruse S, Higuchi T, Ueda S, Sato H. Discrimination of brain abscess from necrotic or cystic tumors by diffusion-weighted echo planar imaging. Magn Reson Imaging. 1996;14(9):1113-6.
  • 10. Guo AC , Cummings TJ, Dash RC, and Provenzale JM. Lymphomas and high-grade astrocytomas: comparison of water diffusibility and histologic characteristics. Radiology. 2002;224(1):177-83.
  • 11. Yamasaki F, Kurisu K, Satoh K, Arita K, Sugiyama K, Ohtaki M, Takaba J, Tominaga A, Hanaya R, Yoshioka H, Hama S, Ito Y, Kajiwara Y, Yahara K, Saito T, Thohar MA. Apparent diffusion coefficient of human brain tumors at MR imaging. Radiology. 2005;235(3):985-91.
  • 12. Rumboldt Z, Camacho DL, Lake D, Welsh CT, Castillo M. Apparent diffusion coefficients for differentiation of cerebellar tumors in children. AJNR Am J Neuroradiol. 2006;27(6):1362-9.
  • 13. Tung GA, Evangelista P, Rogg JM, Duncan JA. Diffusion-weighted MR imaging of rim-enhancing brain masses: is markedly decreased water diffusion specific for brain abscess? AJR Am J Roentgenol. 2001;177(3):709-12.
  • 14. Reddy JS, Mishra AM, Behari S, Husain M, Gupta V, Rastogi M, Gupta RK. The role of diffusion-weighted imaging in the differential diagnosis of intracranial cystic mass lesions: a report of 147 lesions. Surg Neurol. 2006;66(3):246-50.
  • 15. Wang S, Kim S, Chawla S, Wolf RL, Zhang WG, O'Rourke DM, Judy KD, Melhem ER, Poptani H. Differentiation between glioblastomas and solitary brain metastases using diffusion tensor imaging. Neuroimage. 2009;1;44(3):653-60.
  • 16. Toh CH, Castillo M, Wong AM, Wei KC, Wong HF, Ng SH, Wan YL. Primary cerebral lymphoma and glioblastoma multiforme: differences in diffusion characteristics evaluated with diffusion tensor imaging. AJNR Am J Neuroradiol. 2008;29(3):471-5.
  • 17. Hayashida Y, Hirai T, Morishida S, Kitajima M, Murakami R, Korogi Y, Makino K, Nakamura H, Ikushima I, Yamura M, Kochi M, Kuratsu JI, Yamashita Y. Diffusionweighted Imaging of Metastatic Brain Tumors: Comparison with Histologic Type and Tumor Cellularity. AJNR Am J Neuroradiol. 2006;27(7):1419-25.
  • 18. Duygulu G, Ovali GY, Calli C, Kitis O, Yünten , Akalin T, Islekel S. Intracerebral metastasis showing restricted diffusion: correlation with histopathologic findings. Eur J Radiol. 2010;74(1):117-20.
Medicine Science-Cover
  • ISSN: 2147-0634
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 2012
  • Yayıncı: Effect Publishing Agency ( EPA )
Sayıdaki Diğer Makaleler

Gallbladder Ascariasis: A Rare Case

İSMAİL OKAN YILDIRIM, Ayşe AKTAŞ

Seroprevalence of HBsAg, Anti-HBs, anti-HDV and HDVAg in İnönü University Medical Faculty Hospital, 2012

Yücel DUMAN, Mehmet Sait TEKEREKOĞLU, Selma AY

Solitary Metacarpal Osteochondroma; an Unusual Location

Aziz ATİK, Selahattin ÖZYÜREK, Özkan KÖSE, Kenan KOCA, Ferhat GÜLER

Hasta Güvenliğinde Mavi Kod Uygulama Sonuçlarının Değerlendirilmesi

EMİN MURAT AKBAŞ, Fatma MORDOĞAN, Selime TOPRAK, Derya Buğur DOĞAN

Neck and Wrist Circumferences Propose a Reliable Approach to Qualify Obesity and Insulin Resistance

Banu Taskıran TATAR, Canan ERSOY, Emine KİRHAN, Selen KACAN, Celaleddin DEMİRCAN

The Prevalence and Pattern of Depressıon in Patıents with Tuberculosis on Follow-up at Jimma University Specialized Hospital and Jimma Health Center

Alinur ADEM, Markos TESFAYE, Mohammed ADEM

The Incidence of Upper Gastrointestinal Complications of Non-steroidal Anti-inflammatory Drugs in Elderly Patients

Ahmed H. A. HASSANEİN, Mohamed A. E. ABDELRAHİM, Amira S. A. SAİD, Raghda R. S. HUSSEİN, Mohamed ABUSEİF

A case report: Cluster headache in childhood

Faik İLİK, HÜSEYİN ÇAKSEN

A Comparative Study on Patient Rights: Medical vs. Dental Students

Burcu EŞİYOK, Zerrin ERKOL, AHMET TURLA, ZEHTİYE FÜSUN YAŞAR

A New Classification (Grading System) of Debridement in Diabetic Lower Limbs - an Improvization and Standardization in Practice of Diabetic Lower Limb Salvage Around the World

Amit Kumar C JAİN