hepatocellular carcinoma
DESCRIPTION
Hepatocellular Carcinoma. Heba Mohamed Fahmy. إخلاص النية . 1- التخفيف من الام و اوجاع مرضي السرطان و محاولة إيجاد علاجات تفتح باب الأمل و تكون بأقل أعراض جانبية 2- هذا التعاون من باب تعاونوا علي البر و التقوي .... 3- تنمية روح الفريق الواحد فيد الله مع الجماعة ... - PowerPoint PPT PresentationTRANSCRIPT
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HEPATOCELLULAR CARCINOMA
Heba Mohamed Fahmy
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إخالص النية• 1- ا ل ت خ ف ي ف م ن ا ال م و ا و ج ا ع م ر ض ي ا ل س ر ط ا ن و م ح ا و ل ة إ ي ج ا د ع ال ج ا ت
ت ف ت ح ب ا ب ا أل م ل و ت ك و ن ب أ ق ل أ ع ر ا ض ج ا ن ب ي ة• .... ه ذ ا ا ل ت ع ا و ن م ن ب ا ب ت ع ا و ن و ا ع ل ي ا ل ب ر و ا ل ت ق و ي -2• ... ت ن م ي ة ر و ح ا ل ف ر ي ق ا ل و ا ح د ف ي د ا ل ل ه م ع ا ل ج م ا ع ة -3
• 4- ن ب ذ ا ل خ ال ف ا ت و ا ل م ش ا ك ل ب ي ن ن ا و ل ي ك ن ه د ف ن ا ا ال س م ي أ ن ن ق و ي ب ع ض ن ا ا ل ب ع ض
• م س ا ع د ة ص غ ا ر ا ل ب ا ح ث ي ن و ض م ه م إ ل ي ن ا ب ق د ر ا ل م س ت ط ا ع -5• 6- أل ن ن ا ب ب س ا ط ة س ن ن ج ح م ع ا أ و. . ل ن ي ك و ن ه ن ا ك ك ر ا ه ي ة و ال ح ق د ب ي ن ن ا
ن ف ش ل م ع ا• 7أ ن ن س ل ك ط ر ي ق ا ن ل ت م س ف ي ه ع ل م ا ف ي س ه ل ا ل ل ه ل ن ا ط ر ي ق ا إ ل ي ا ل ج ن ة -
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General info.•Hepatocellular carcinoma is the 5th most common malignancy worldwide & the 3rd cause of cancer related death •Most common in males•Incidence depends on geographic distribution •HCC increases with age•HCC increases during last years
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CausesHepatitis B
(increases risk 100-200 fold)
Cirrhosis
Toxins(Alcohol, tobacco
& alfactoxins)
Hepatitis C Diabetes mellitus Overweight in males
Autoimmune hepatitis
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Signs & symptoms
Nonspecific symptoms• abdominal pain• Fever, chills• anorexia, weight loss• jaundice
Physical findings• abdominal mass in one third• splenomegaly• ascites• abdominal tenderness
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Diagnosis
AFP produced by 70% of HCC
• > 400ng/ml• AFP increases
over time
Imaging
• - focal lesion in the liver of a patient with cirrhosis is highly likely to be HCC
• - Spiral CT of the liver
• - MRI with contrast enhancement
Biopsy is rarely required for diagnosis
• Biopsy of potentially operable lesions should be avoided where possible
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Treatment (Surgery)
The only proven potentially curative therapy for HCC
Hepatic resection or liver transplantation
Patients with single small HCC (≤5 cm) or up to three lesions ≤3 cm
Recurrence rates of 50–60% after 5 years after resection are usual (intrahepatic)Patients with replicating HBV/ HCV had a worse outlook due to recurrence and were previously not considered candidates for transplantation.
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Treatment (non-Surgical)should only be used where surgical therapy is not
possible.
1) Percutaneous ethanol injection (PEI) • has been shown to produce necrosis of small HCC. • It is best suited to peripheral lesions, less than 3 cm
in diameter
2) Radiofrequency ablation (RFA)• High frequency ultrasound to generate heat• good alternative ablative therapy • Useful for tumor control in patients awaiting liver
transplant
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Treatment (non-Surgical)
3) Cryotherapy• intraoperatively to ablate small solitary tumors
outside a planned resection in patients with bilobar disease
4) Chemoembolisation • Concurrent administration of hepatic arterial
chemotherapy (doxirubicin) with embolization of hepatic artery
• Produce tumour necrosis in 50% of patients• Effective therapy for pain or bleeding from HCC• Affect survival in highly selected patients with good
liver reserve• Complications: (pain, fever and hepatic
decompensation)
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Treatment (non-Surgical)5) Systemic chemotherapy • very limited role in the treatment of HCC with poor
response rate • Best single agent is doxorubicin • Combination chemotherapy didn’t response but
survival• should only be offered in the context of clinical trials
6) Hormonal therapy- Nolvadex, stilbestrol and flutamide
7) Interferon-alfa8) retinoids and adoptive immunotherapy (adjuvant)
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Investigational combination therapies in HCC
Combinations under investigations• Bevacizumzb + erlotinib• Sorafenib +erlotinibCombination therapy will likely be used to treat HCC in the future
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HCC (What’s ahead?)
•Combinations therapy
• Bevacizumzb or Sorafenib + Erlotinib•Sorafenib + mTOR inhibitor
•Early sequential therapies
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De Minicis, S., Kisseleva, T., Francis, H., Baroni, G. S., Benedetti, A., Brenner, D., Alvaro, D., et al. (2012). Liver carcinogenesis: Rodent models of hepatocarcinoma and cholangiocarcinoma. Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver. doi:10.1016/j.dld.2012.10.008
The paper
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Genotoxic
Promoting agents
Carcinogenic agents
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The “N-nitrosodiethylamine” model
DEN
acts
in 2
diff
eren
t wa
ys
By alkylating DNA structures , so leas
to DNA damage and cell
degeneration
Inducing ROS through
activation of cytochrome P450
in hepatocytes
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DEN model depends on:•1- Dose•2- Timing of administration •3-Sex, age, mice strains.•4- Association with promoting agents
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DEN + Phenobarbital (PB)• - Adult male B6C3F1 mice initiated with DEN (6-10 weeks age)
Then PB is added to drink water for 36 weeks (promoting agent)
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The peroxisome poliferators model
• -The preroxisome poliferator-activated receptors (PPARs) are nuclear receptors that bind to fatty acid-derived ligands and activate the transcription of genes that regulated lipid metabolism •The formed PPARs ligand activated peroxisomal oxidase and induced ROS thus promoting HCC development.
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THANK YOU