Medicolegal Autopsies Practice Questions

Q: When the cause of death remains unclear even after a complete post-mortem examination, what is this situation called?

Negative autopsy. ### Explanation **Correct Answer: D. Negative autopsy** A **Negative Autopsy** is defined as a post-mortem examination where the cause of death cannot be determined even after a thorough gross examination, histopathology, chemical analysis (toxicology), and microbiological investigations. In these cases, the findings are either non-existent or so minimal that they do not explain the mechanism of death. Common causes include vagal inhibition, cardiac arrhythmias (Channelopathies), or certain metabolic disorders. **Analysis of Incorrect Options:** * **A. Defective autopsy:** This refers to an autopsy that is incomplete or improperly performed. The cause of death is missed due to the pathologist's failure to examine a specific organ or perform necessary ancillary tests, rather than a genuine absence of findings. * **B. Normal autopsy:** This is not a standard medicolegal term. While the organs may appear "normal" in a negative autopsy, the term "Normal Autopsy" is clinically imprecise in a forensic context. * **C. Obscure autopsy:** This occurs when the findings are present but are very subtle or minimal (e.g., early myocardial infarction, small pulmonary embolism, or mild ketoacidosis). Unlike a negative autopsy, there *is* a detectable cause, but it requires meticulous examination to uncover. **High-Yield Facts for NEET-PG:** * **Incidence:** Negative autopsies account for approximately **2–5%** of all medicolegal autopsies. * **Common Causes of Negative Autopsy:** Functional triggers like **Vagal Inhibition**, **Sudden Infant Death Syndrome (SIDS)**, and **Cardiac Channelopathies** (e.g., Brugada Syndrome, Long QT Syndrome). * **Second Autopsy:** If a second autopsy is performed on a previously autopsied body, it is termed a **Re-autopsy**. * **Psychological Autopsy:** A retrospective investigation into the mental state of the deceased (common in suspected suicide cases).

Q: En bloc dissection and organ separation are done by which method?

Ghon. **Explanation:** The correct answer is **Ghon (Option B)**. In forensic pathology, the Ghon method is characterized by the **"En bloc"** removal of organs. In this technique, organs are removed in functionally related blocks (e.g., thoracic block, abdominal block, and urogenital block). This allows for the preservation of anatomical relationships between adjacent organs while facilitating easier dissection outside the body cavity compared to the Letulle method. **Analysis of Options:** * **Virchow (Option A):** This is the most common method used in routine autopsies. It involves the removal of organs **one by one** (individual organ removal). It is excellent for identifying pathology in specific organs but destroys anatomical connections. * **Rokitansky (Option C):** This method involves **in-situ dissection** (dissection within the body cavity). Organs are not removed as a whole; instead, they are opened and examined while still attached to the body. It is rarely used today except in cases of highly infectious diseases (e.g., HIV, Hepatitis) to minimize the risk of needle-stick injuries. * **Letulle (Option D):** This is the **"En masse"** technique. All thoracic, abdominal, and pelvic organs are removed as a single, continuous large block. It is the best method for preserving all vascular and ductal connections but is technically demanding and requires a large dissection table. **High-Yield Clinical Pearls for NEET-PG:** * **Ghon = En bloc** (Functional groups). * **Letulle = En masse** (Everything at once). * **Virchow = One by one** (Most common). * **Rokitansky = In-situ** (Inside the body). * **Modified Wyne-Ghon method:** Often used for pediatric autopsies to preserve the relationship between the heart and great vessels.

Q: For exhumation, the order should be passed by which authority?

Executive Magistrate. **Explanation:** **1. Why Executive Magistrate is Correct:** Exhumation is the lawful disinterment of a buried body for medicolegal examination. Under **Section 176(2) of the CrPC** (now Section 196 of the Bharatiya Nagarik Suraksha Sanhita/BNSS), the authority to order an exhumation rests solely with the **Executive Magistrate** (e.g., District Magistrate, Sub-divisional Magistrate, or Tehsildar). This is because exhumation is considered an extension of the "Inquest" process, which is an administrative-legal function rather than a purely judicial or investigative one. **2. Why Other Options are Incorrect:** * **Chief Judicial Magistrate & Sessions Judge:** While these authorities have higher judicial powers, they do not typically issue exhumation orders. In India, the legal framework delegates the administrative control of dead bodies and inquests to the Executive branch to ensure immediate action. * **Police Officer:** A police officer (even of high rank) can request an exhumation if foul play is suspected, but they do not have the legal power to *order* it. They must apply to the Executive Magistrate to obtain the necessary permission. **3. High-Yield Facts for NEET-PG:** * **Time Limit:** In India, there is **no time limit** for exhumation (unlike in some countries like France, where it is 10 years). It can be done as long as the remains (bones/teeth) are available. * **Timing:** Exhumation should ideally be performed in the **early morning** to avoid public scrutiny and the heat of the day. * **Procedure:** The Medical Officer must collect samples of the **surrounding soil** (from above, below, and all four sides of the coffin/body) to rule out environmental contamination (e.g., arsenic from the soil) during toxicology. * **Identification:** The presence of the **grave digger** and relatives is essential for the identification of the grave and the deceased.

Q: For exhumation, the order should be passed by which authority?

Executive Magistrate. **Explanation:** **1. Why Executive Magistrate is Correct:** Exhumation is the lawful disinterment of a buried body for medicolegal purposes (e.g., suspected foul play or poisoning). Under **Section 176(2) of the CrPC** (now Section 196 of the Bharatiya Nagarik Suraksha Sanhita - BNSS), the authority to order an exhumation in India rests solely with the **Executive Magistrate** (such as a District Magistrate or Sub-Divisional Magistrate). This is because exhumation is considered an administrative procedure related to the inquest process, which is the domain of the Executive Magistrate. **2. Why Other Options are Incorrect:** * **Chief Judicial Magistrate & Sessions Judge:** While these authorities preside over criminal trials and can issue various warrants, they do not typically initiate the exhumation process. The law specifically empowers the Executive Magistrate to handle the disinterment of bodies for investigation. * **Police Officer:** A police officer (Investigating Officer) can request an exhumation if they believe it is necessary for a case, but they do not have the legal power to *order* it. They must apply to the Executive Magistrate to obtain the necessary permission. **High-Yield Clinical Pearls for NEET-PG:** * **Time Limit:** In India, there is **no time limit** for exhumation. A body can be exhumed as long as any remains (bones, hair, teeth) are available for examination. * **Procedure:** Exhumation should ideally be performed in **daylight** (to avoid missing evidence) and under the supervision of a Medical Officer and the Executive Magistrate. * **Samples:** In cases of suspected poisoning where the body is decomposed, samples of the **surrounding soil** (above, below, and from all four sides of the coffin/body) and any **shroud material** must be collected as controls. * **Identification:** The body must be identified by witnesses or relatives before the autopsy begins.

Q: In autopsy, which organ is removed with liver?

Spleen. ***Spleen*** - In autopsy, the **spleen is routinely removed along with the liver** as part of standard dissection protocols (Virchow's method and variations). - This is done to examine the **portal venous system**, assess the **hepatosplenic circulation**, and evaluate pathologies affecting both organs such as **portal hypertension**, **congestive splenomegaly**, or **hepatic cirrhosis**. - The anatomical proximity and shared vascular connections make their removal together both practical and diagnostically valuable. *Kidney* - The **kidneys** are typically removed separately or as part of the **posterior abdominal block** after the liver and spleen have been removed. - While kidneys may be examined in relation to the abdominal vasculature, they are not removed in direct continuity with the liver block in standard autopsy technique. - Their retroperitoneal location makes separate dissection more appropriate. *Stomach* - The **stomach** is removed as part of the **gastrointestinal tract block**, which includes the esophagus, duodenum, and often the pancreas. - Though anatomically adjacent to the liver, it is not part of the hepatosplenic block. - Its examination focuses on mucosal pathology, ulcers, tumors, and gastric contents rather than hepatic circulation. *Brain* - The **brain** is removed as a completely separate organ through **craniotomy** after reflection of the scalp. - It is housed within the cranium and has no anatomical or dissection relationship with abdominal organs. - Brain removal follows examination of the cranial cavity, meninges, and cerebral vessels.

Q: Underwater autopsy of the heart is done in cases of: DNB 09

Air embolism. ***Air embolism*** - An underwater autopsy of the heart is specifically performed to detect **air embolism**. The heart, or parts of it, are submerged in water during incision, allowing any gas (air) released to be observed as bubbles rising to the surface. - This technique helps confirm the presence of **intracardiac air**, which is crucial in diagnosing fatal air embolism. *Pneumothorax* - While pneumothorax involves the presence of air, it occurs in the **pleural space**, not within the heart. - Diagnosis of pneumothorax at autopsy primarily involves checking for **collapsed lung lobes** and gas in the pleural cavity, not specific cardiac examination. *Pulmonary embolism* - Pulmonary embolism involves a **blood clot** (thrombus) obstructing pulmonary arteries, not air. - Autopsy diagnosis focuses on identifying the **thrombus** within the pulmonary vasculature. *Myocardial infarction* - Myocardial infarction is characterized by **heart muscle necrosis** due to ischemia, not air. - Diagnosis involves macroscopic and microscopic examination of the **myocardium** for signs of infarction such as pallor, hemorrhage, or inflammatory infiltrates.

Q: For autopsy, vitreous is preserved in:

Fluoride. ***Fluoride (Sodium fluoride)*** - **Sodium fluoride** is the preferred preservative for vitreous humor samples collected during autopsy, especially when testing for **alcohol** and **glucose** levels. - It acts as an **enzyme inhibitor**, preventing post-mortem metabolism of glucose and fermentation of alcohol by microorganisms, thus maintaining the sample's integrity. *Phenol* - **Phenol** is an antiseptic and disinfectant often used in tissue preservation for histological examination, but it is not typically used for vitreous humor to preserve metabolites like glucose or alcohol. - It can interfere with some analytical methods used for vitreous analysis. *Sulphuric acid* - **Sulphuric acid** is a strong acid that would cause significant denaturation of proteins and alteration of the chemical composition of vitreous humor. - It is not suitable for preserving biological samples for most analyses, especially for fragile metabolites such as glucose. *Xylol* - **Xylol** (xylene) is a common solvent used in histology for clearing tissues (removing alcohol) before paraffin embedding, making it unsuitable for direct preservation of body fluids like vitreous humor. - It would dissolve cellular components and denature proteins, rendering the sample useless for chemical analysis.

Question 1

When the cause of death remains unclear even after a complete post-mortem examination, what is this situation called?

Accepted Answer

Negative autopsy

Answer

Defective autopsy

Answer

Normal autopsy

Answer

Obscure autopsy

Question 2

After a postmortem examination, the body is typically handed over to whom?

Accepted Answer

Police constable

Answer

Relatives

Answer

Preserved in mortuary

Answer

Magistrate

Question 3

En bloc dissection and organ separation are done by which method?

Accepted Answer

Ghon

Answer

Virchow

Answer

Rockitansky

Answer

Letulle

Question 4

After a postmortem examination, to whom is the body handed over?

Accepted Answer

The authority who conducted the inquest in that particular case

Answer

The police station nearby

Answer

The coroner

Answer

The chief magistrate

Question 5

For exhumation, the order should be passed by which authority?

Accepted Answer

Executive Magistrate

Answer

Chief Judicial Magistrate

Answer

Police Officer

Answer

Sessions Judge

Question 6

For exhumation, the order should be passed by which authority?

Accepted Answer

Executive Magistrate

Answer

Chief Judicial Magistrate

Answer

Police Officer

Answer

Sessions Judge

Question 7

In autopsy, which organ is removed with liver?

Accepted Answer

Spleen

Answer

Stomach

Answer

Kidney

Answer

Brain

Question 8

Underwater autopsy of the heart is done in cases of: DNB 09

Accepted Answer

Air embolism

Answer

Pneumothorax

Answer

Pulmonary embolism

Answer

Myocardial infarction

Question 9

Certain obligations on the part of a doctor who undertakes a postmortem examination are the following, EXCEPT:

Accepted Answer

He must keep the police informed about the findings

Answer

Routinely record all positive findings and important negative ones

Answer

The examination should be meticulous and complete

Answer

He must preserve viscera and send for toxicology examination in case of poisoning

Question 10

For autopsy, vitreous is preserved in:

Accepted Answer

Fluoride

Answer

Phenol

Answer

Sulphuric acid

Answer

Xylol

Medicolegal Autopsies — MCQs

Medicolegal Autopsies — MCQs

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