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Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5302_Библиотеки_им_академика_М_И_Перельмана
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Interesting Fact: Gastrointestinal lymphomas can be challenging to
diagnose and differentiate from other gastrointestinal disorders.
Gastrointestinal Stromal Tumor (GIST)
Definition: Soft tissue sarcoma arising in the gastrointestinal tract.
Pathophysiology: Mutations in the c-KIT or PDGFRA genes leading to
uncontrolled cell growth.
Signs and Symptoms: Abdominal pain, bleeding, mass in the abdomen.
Causes/Risk Factors: Genetic mutations.
Medical Management: Targeted therapy (imatinib), surgery for localized
tumors.
Surgical Management: Surgical resection with clear margins.
Prognosis: Depends on size, location, and completeness of surgical
resection.
Interesting Fact: GISTs can occur anywhere in the GI tract but are most
common in the stomach.
Gastroparesis
Definition: Delayed emptying of the stomach, often due to impaired
motility of the stomach muscles.
Pathophysiology: Damage to the vagus nerve or stomach muscles, leading
to poor gastric emptying.
Signs and Symptoms: Nausea, vomiting, abdominal pain, bloating, early
satiety.
Causes/Risk Factors: Diabetes, neurological disorders, surgery, certain
medications.
Medical Management: Dietary modifications (small, frequent meals),
medications to stimulate stomach emptying, and nutritional support.
Surgical Management: Gastric electrical stimulation, pyloroplasty
(widening the pyloric opening), partial gastrectomy in severe cases.
Prognosis: Variable, depending on the underlying cause and response to
treatment.
Interesting Fact: Gastroparesis can significantly impact the quality of life,
leading to malnutrition and dehydration if not managed effectively.
Giant Cell Tumor of Bone
Definition: Locally aggressive tumor characterized by the presence of
multinucleated giant cells.
Pathophysiology: Abnormal growth of stromal cells and giant cells.
Signs and Symptoms: Bone pain, swelling, limited range of motion.
Causes/Risk Factors: Unknown; usually sporadic.
Medical Management: Pain management, bisphosphonates, denosumab.
Surgical Management: Curettage and bone grafting, sometimes involving
joint reconstruction.
Prognosis: Variable; tends to recur locally after excision.
Interesting Fact: Giant cell tumors of bone can cause significant bone
destruction and tend to affect young adults.
Hemorrhoids
Definition: Swollen and inflamed veins in the rectum and anus.
Pathophysiology: Increased pressure in the veins of the rectum, causing
them to swell and become painful.
Signs and Symptoms: Pain, bleeding during bowel movements, itching,
discomfort.
Causes/Risk Factors: Straining during bowel movements, constipation,
pregnancy, obesity.
Medical Management: Dietary modifications, topical treatments, lifestyle
changes.
Surgical Management: Hemorrhoidectomy (surgical removal of
hemorrhoids) for severe cases.
Prognosis: Generally good with appropriate management.
Interesting Fact: Hemorrhoids are a common condition, especially during
pregnancy and in older adults.
Hepatic Abscess
Definition: Collection of pus in the liver, typically caused by bacterial
infection.
Pathophysiology: Bacterial infection in the liver tissue, leading to abscess
formation.
Signs and Symptoms: Right upper quadrant pain, fever, jaundice, weight
loss.
Causes/Risk Factors: Biliary tract infection, abdominal trauma,
immunosuppression.
Medical Management: Antibiotics, drainage of the abscess if necessary.
Surgical Management: Percutaneous drainage or open surgical drainage
for large or complicated abscesses.
Prognosis: Good with prompt medical intervention; can be life-threatening
if untreated.
Interesting Fact: Liver abscesses can be single or multiple and are often
caused by bacterial spread from other parts of the body.
Hepatic Hemangioma
Definition: Benign tumor in the liver composed of tangled blood vessels.
Pathophysiology: Abnormal development of blood vessels in the liver.
Signs and Symptoms: Often asymptomatic; discovered incidentally during
imaging studies.
Causes/Risk Factors: Unknown; may be congenital.
Medical Management: Observation, especially for small, asymptomatic
hemangiomas.
Surgical Management: Surgical resection in symptomatic cases or if
there’s concern for rupture.
Prognosis: Excellent; benign nature, but intervention may be necessary if
symptomatic.
Interesting Fact: Hepatic hemangiomas are the most common benign liver
tumors and are usually discovered incidentally.
Hepatic Hydatid Cyst
Definition: Cystic growth caused by the larval stage of Echinococcus
tapeworm, specifically in the liver.
Pathophysiology: Parasitic infection leading to cyst formation in the liver.
Signs and Symptoms: Often asymptomatic; can cause abdominal pain,
jaundice, and hepatomegaly if large.
Causes/Risk Factors: Contact with infected animals, especially dogs.
Medical Management: Anti-parasitic medications.
Surgical Management: Cyst removal, sometimes requiring liver resection.
Prognosis: Good with surgical removal; recurrence possible if not
completely excised.
Interesting Fact: Hepatic hydatid cysts are endemic in certain regions
where livestock raising is common.
Hernias
Definition: Protrusion of an organ or tissue through a weak area in the
abdominal wall.
Pathophysiology: Weakened abdominal wall combined with increased
intra-abdominal pressure.
Signs and Symptoms: Visible lump, pain, and discomfort, especially
during activities.
Causes/Risk Factors: Muscle weakness, congenital defects, heavy lifting,
obesity, chronic coughing.
Medical Management: Supportive (truss). Surgical repair (herniorrhaphy)
is definitive.
Surgical Management: Open or laparoscopic repair, often using mesh.
Prognosis: Generally good with low recurrence rates post-surgery.
Interesting Fact: Hernias can occur in various locations, including
inguinal, femoral, umbilical, and hiatal regions.
Hiatal Hernia
Definition: Hernia where the upper part of the stomach protrudes into the
chest through the diaphragm opening (hiatus).
Pathophysiology: Weakness in the diaphragm allows the stomach to push
through the hiatus.
Signs and Symptoms: Heartburn, regurgitation, chest pain, difficulty
swallowing.
Causes/Risk Factors: Weakness in the diaphragm, obesity, aging.
Medical Management: Antacids, proton pump inhibitors, lifestyle
modifications.
Surgical Management: Hiatal hernia repair (fundoplication) is often
combined with anti-reflux surgery.
Prognosis: Generally good, with surgery providing long-term relief in
refractory cases.
Interesting Fact: Many people with hiatal hernias are asymptomatic and
may not require treatment unless symptoms occur.
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