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Related Concept Videos

Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Allergic Reactions02:06

Allergic Reactions

Overview
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
Allergic Drug Reactions01:27

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

Type II hypersensitivity involves IgG and IgM antibodies targeting cell surface antigens, leading to cell destruction. This can occur through complement activation, antibody-dependent cell-mediated cytotoxicity (ADCC), or acting as opsonins for phagocytosis. When excessive, these reactions cause significant tissue damage.Drug-induced hemolytic anemia is a common example, where drugs like penicillin or cephalosporins bind to red blood cells, forming drug-protein complexes. These complexes...

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Related Experiment Video

Updated: Jul 15, 2026

Antigenic Liposomes for Generation of Disease-specific Antibodies
10:31

Antigenic Liposomes for Generation of Disease-specific Antibodies

Published on: October 25, 2018

Hepatic hydatid cyst presenting as anaphylaxis.

Brig Maqbool1, Major Syed Faraz Anwar

  • 1Department of Surgery, Combined Military Hospital, Multan.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|April 28, 2007
PubMed
Summary

A young soldier with liver hydatid cyst experienced chest pain and collapsed. Surgical intervention and albendazole treatment led to a full recovery, highlighting effective management of this parasitic infection.

Area of Science:

  • Medicine
  • Parasitology
  • Surgical Case Report

Background:

  • Hydatid disease, caused by Echinococcus granulosus, is a parasitic infection presenting with cysts, often in the liver.
  • A young soldier presented with collapse and chest pain, prompting urgent medical evaluation.

Purpose of the Study:

  • To report a case of liver hydatid cyst presenting atypically with chest pain and collapse.
  • To describe the diagnostic and therapeutic approach for a complicated liver hydatid cyst.

Main Methods:

  • Initial resuscitation and mechanical ventilation.
  • Abdominal ultrasound and CT scan for diagnosis of liver cyst.
  • Surgical management involving aspiration, hypertonic saline instillation, and cyst excision.
  • Pharmacological treatment with albendazole.

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Last Updated: Jul 15, 2026

Antigenic Liposomes for Generation of Disease-specific Antibodies
10:31

Antigenic Liposomes for Generation of Disease-specific Antibodies

Published on: October 25, 2018

Main Results:

  • Diagnosis of a large hydatid cyst in the right lobe of the liver.
  • Successful surgical removal of the cyst and endocyst.
  • Uneventful postoperative recovery with albendazole treatment.
  • Resolution of symptoms and discharge with follow-up advice.

Conclusions:

  • Liver hydatid cysts can present with severe symptoms like chest pain and collapse, potentially due to cyst perforation.
  • A combination of medical (albendazole) and surgical treatment is effective for managing complicated hydatid cysts.
  • Prompt diagnosis and intervention are crucial for favorable outcomes in hydatid disease.