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06-08-2008, 08:33 AM
mTypes:
1- Benign tumours: rare.
2- Malignant tumours: More frequent.
a) Lymphosarcoma " the commonest".
b) Metastatic L.N " the same frequency to the commonest".
c) Liposarcoma & fibrosarcoma " the second common tumours".
d) Neurosarcoma, myxoma and teratoma are rare.
mDiagnosis:
Retroperitoneal tumours gives abdominal mass which push intestine infront of it which may give early resonant percussion.
The mass is usually fixed to post. abdominal wall & diagnosed clinically by exclusion from other causes of abdominal mass e.g. liver, spleen, colon Kidney, mesenteric cyst &G.B. mass.
mInvestigations:
1- Abdominal ultrasonography.
2- C.T. scanning.
3- Magnetic Resonance Imaging [M R I].
4- Presacral air insufflation: help to outline the tumour & its relations by contrast "200cc Co2 is preferred to avoid air embolism".
5- I.V. urography Displacement of the ureter laterally or anteriorly.
6- Aortography Abnormal vasculature of the tumour.
7- Laparotomy is usually needed for biopsy resection only in 20% of cases.
SOURCE: DR. AYMAN SALEM'S BOOK
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