General Surgery Principles — MCQs

General Surgery Principles Indian Medical PG Practice Questions and MCQs

Question 681: What is the most common location for an intraperitoneal abscess?

A. Pelvis (Correct Answer)
B. Subphrenic space
C. Periappendicular
D. Paracolic gutter

Explanation: **Explanation:** The **pelvis** is the most common site for intraperitoneal abscess formation due to the combined effects of **gravity** and the **anatomical contours** of the peritoneal cavity. When a patient is in an upright or semi-recumbent (Fowler’s) position, infected peritoneal fluid naturally drains downward into the most dependent part of the abdomen—the rectovesical pouch in men or the rectouterine pouch (Pouch of Douglas) in women. **Analysis of Options:** * **Pelvis (Correct):** Gravity ensures that exudates from various sources (e.g., perforated appendix, diverticulitis, or pelvic inflammatory disease) collect here. It is the most frequent site overall. * **Subphrenic space:** While a common site for abscesses (especially following upper GI surgery or gallbladder perforation), it is less frequent than the pelvis. The phrenicocolic ligament acts as a partial barrier to the spread of infection into the left subphrenic space. * **Periappendicular:** This is a localized site specific to appendicitis. While common in the context of a single disease, it does not represent the most common site for intraperitoneal abscesses globally. * **Paracolic gutter:** These serve as "conduits" or pathways for the flow of infected fluid rather than primary sites of sequestration. Fluid typically travels down the right paracolic gutter to settle in the pelvis. **NEET-PG High-Yield Pearls:** * **Clinical Presentation:** Pelvic abscesses often present with "spurious diarrhea" (mucus discharge) and urinary frequency due to irritation of the rectum and bladder. * **Diagnosis:** The most sensitive imaging modality is a **CT scan**. On physical exam, a digital rectal examination (DRE) may reveal a boggy, tender mass. * **Management:** The gold standard is **percutaneous drainage** (ultrasound or CT-guided). Pelvic abscesses can also be drained via the rectum (proctotomy) or posterior vaginal fornix (colpotomy).

Question 682: What is the mechanical advantage for a straight elevator?

A. 2.5
B. 3 (Correct Answer)
C. 4.6
D. 2

Explanation: **Explanation:** The **straight elevator** (commonly used in oral and maxillofacial surgery) functions primarily on the **Lever Principle** (specifically a Class I lever). The mechanical advantage (MA) of a tool is the ratio of the force produced by it to the force applied to it. 1. **Why Option B (3) is Correct:** The mechanical advantage of a straight elevator is calculated based on the ratio of the length of the handle (power arm) to the length of the blade (work arm). For a standard straight elevator, this ratio is typically **3**. This means the instrument triples the force applied by the surgeon's hand, allowing for the effective expansion of the alveolar bone and severing of periodontal ligaments. 2. **Why Other Options are Incorrect:** * **Option A (2.5):** This value is lower than the standard mechanical advantage of a straight elevator. While some specific designs may vary, 3 is the classic textbook value for the straight pattern. * **Option C (4.6):** This is a specific value associated with the **Cryer elevator** (triangular elevator) when used with a wheel-and-axle mechanism. It provides a much higher mechanical advantage than the straight elevator. * **Option D (2):** This value is too low to provide the necessary clinical force required for tooth luxation using a lever action. **Clinical Pearls for NEET-PG:** * **Three Principles of Elevators:** 1. Lever Principle (most common), 2. Wedge Principle (e.g., Apexo elevator), 3. Wheel and Axle Principle (e.g., Crossbar/Winter’s elevator). * **Highest Mechanical Advantage:** The Wheel and Axle principle (used in Crossbar elevators) provides the highest mechanical advantage (approx. 4.6), but it also carries the highest risk of mandibular fracture if excessive force is used. * **Straight Elevator Use:** It is primarily used for luxation of teeth before forceps application. It should never be used using the adjacent tooth as a fulcrum unless that tooth is also slated for extraction.

Question 683: Which of the following is a component of the Alvarado score?

A. Leucopenia
B. Anorexia (Correct Answer)
C. Diarrhea
D. Periumbilical pain

Explanation: The **Alvarado Score** (MANTRELS) is a clinical scoring system used to diagnose acute appendicitis. The correct answer is **Anorexia** because it is one of the three primary symptoms included in the score. ### **Explanation of Options** * **Anorexia (Correct):** It is a classic symptom of appendicitis and is assigned **1 point** in the Alvarado score. * **Leucopenia (Incorrect):** The score actually includes **Leukocytosis** (WBC count >10,000/µL), which is a major indicator (2 points). Leucopenia is not part of the criteria. * **Diarrhea (Incorrect):** While some patients with a pelvic appendix may present with diarrhea, it is not a component of the Alvarado score. * **Periumbilical pain (Incorrect):** While appendicitis often starts as periumbilical pain, the score specifically looks for **Migration of pain** to the Right Iliac Fossa (RIF). ### **High-Yield Facts: MANTRELS Mnemonic** To excel in NEET-PG, remember the **MANTRELS** mnemonic for the Alvarado score: | Feature | Component | Points | | :--- | :--- | :--- | | **M** | **M**igration of pain to RIF | 1 | | **A** | **A**norexia | 1 | | **N** | **N**ausea/Vomiting | 1 | | **T** | **T**enderness in RIF | **2** | | **R** | **R**ebound tenderness | 1 | | **E** | **E**levated temperature (≥37.3°C) | 1 | | **L** | **L**eukocytosis (>10,000/µL) | **2** | | **S** | **S**hift to the left (Neutrophilia) | 1 | | | **Total Score** | **10** | **Clinical Pearls:** * **Maximum Score:** 10. * **Significant Score:** A score of **≥7** is highly predictive of acute appendicitis and usually warrants surgical intervention. * **Modified Alvarado Score:** This version omits "Shift to the left," making the total score 9.

Question 684: When a sebaceous cyst of the scalp is ulcerated and excessive granulation tissue forms a fungating epithelioma, it is known as:

A. Cock's peculiar tumour. (Correct Answer)
B. Sebaceous horn.
C. Sequestration dermoid.
D. Terstomatous dermoid.

Explanation: ### Explanation **1. Why Cock’s Peculiar Tumour is Correct:** A **Cock’s peculiar tumour** is a clinical complication of a sebaceous cyst (trichilemmal cyst), most commonly occurring on the scalp. When a sebaceous cyst becomes infected or irritated, it may ulcerate. The resulting exuberant growth of granulation tissue protrudes through the ulcerated opening, creating a fungating, foul-smelling mass. Because it mimics the appearance of a squamous cell carcinoma (epithelioma), it is termed "peculiar." However, it is a **benign** inflammatory condition, not a true malignancy. **2. Why the Other Options are Incorrect:** * **Sebaceous horn:** This occurs when the sebum inside a cyst escapes slowly through a small pore and hardens/desiccates, forming a horn-like projection of keratin. It does not present as a fungating, ulcerated mass. * **Sequestration dermoid:** This is a congenital cyst formed by the entrapment of surface epithelium along embryonic fusion lines (e.g., external angular dermoid). It is present from birth and does not typically ulcerate to form granulation tissue. * **Teratomatous dermoid:** These are complex cysts containing tissues from all three germ layers (ectoderm, mesoderm, endoderm), commonly found in the ovary or mediastinum, rather than presenting as an ulcerated scalp lesion. **3. NEET-PG High-Yield Pearls:** * **Clinical Mimicry:** The most important clinical point is that Cock’s peculiar tumour **mimics Squamous Cell Carcinoma (SCC)**. Biopsy is essential to rule out malignancy. * **Lymphadenopathy:** Despite its aggressive appearance, regional lymph nodes are usually enlarged due to **infection** (lymphadenitis), not metastasis. * **Treatment:** Wide local excision is the treatment of choice. * **Common Site:** The scalp is the most frequent site due to the high density of sebaceous glands.

Question 685: Moure's sign is seen in which of the following conditions?

A. Carcinoma (Correct Answer)
B. Appendicitis
C. Varicose vein
D. Pancreatitis

Explanation: **Explanation:** **Moure’s sign** (also known as the "Laryngeal Crepitus" or "Clicking sign") refers to the **loss of normal laryngeal crepitus**. In a healthy individual, moving the larynx side-to-side against the vertebral column produces a distinct clicking or grating sensation. The correct answer is **Carcinoma** (specifically Post-cricoid Carcinoma) because the tumor mass infiltrates the space between the larynx and the vertebrae, acting as a "cushion" that prevents the structures from rubbing together, thus abolishing the crepitus. **Analysis of Options:** * **A. Carcinoma (Correct):** Specifically associated with **Post-cricoid Carcinoma** (Hypopharyngeal cancer). It is a classic clinical sign indicating posterior extension of the malignancy. * **B. Appendicitis:** This is associated with signs like McBurney’s point tenderness, Rovsing’s sign, and the Psoas sign, which relate to peritoneal irritation, not laryngeal mobility. * **C. Varicose Veins:** Clinical signs include the Trendelenburg test, Perthes test, and Fegan’s test, focusing on valvular incompetence and venous reflux. * **D. Pancreatitis:** Associated with signs of retroperitoneal hemorrhage such as Cullen’s sign (periumbilical ecchymosis) and Grey Turner’s sign (flank ecchymosis). **High-Yield Clinical Pearls for NEET-PG:** * **Moure’s Sign:** Loss of crepitus = Post-cricoid malignancy. * **Post-cricoid Carcinoma:** Often associated with **Plummer-Vinson Syndrome** (Paterson-Brown-Kelly Syndrome), characterized by iron deficiency anemia, esophageal webs, and glossitis. * **Differential Diagnosis:** While Moure's sign is classic for carcinoma, a **Retropharyngeal abscess** can also cause loss of laryngeal crepitus due to the accumulation of pus in the prevertebral space.

Question 686: Cock's peculiar tumor is described as which of the following?

A. Basal cell carcinoma
B. Squamous cell carcinoma
C. Ulcerated sebaceous cyst (Correct Answer)
D. Cylindroma

Explanation: **Explanation:** **Cock’s Peculiar Tumor** is a classic surgical misnomer. Despite the name "tumor," it is not a true neoplasm but a **sebaceous cyst** (trichilemmal cyst) of the scalp that has undergone infection and ulceration. 1. **Why Option C is correct:** When a sebaceous cyst on the scalp becomes infected, it can rupture and ulcerate. The lining of the cyst (the germinal matrix) proliferates and protrudes through the opening, creating a fungating, granulomatous mass. This exuberant growth mimics the appearance of a malignant skin tumor (like Squamous Cell Carcinoma), hence the name "peculiar tumor." 2. **Why other options are incorrect:** * **Basal Cell Carcinoma (A):** Typically presents as a pearly papule with telangiectasia or a "rodent ulcer." It does not arise from a pre-existing sebaceous cyst. * **Squamous Cell Carcinoma (B):** While Cock’s peculiar tumor clinically resembles SCC due to its everted edges and fungation, it is histologically benign. However, long-standing cysts can rarely undergo malignant transformation into SCC. * **Cylindroma (D):** Also known as a "Turban tumor," this is a benign adnexal tumor. It presents as multiple smooth, painless nodules on the scalp, unlike the ulcerated, infected presentation of Cock’s tumor. **Clinical Pearls for NEET-PG:** * **Site:** Almost exclusively found on the **scalp**. * **Clinical Feature:** It presents as a foul-smelling, fungating mass with everted edges. * **Diagnosis:** It is clinically indistinguishable from SCC; therefore, a **biopsy** is essential to confirm its benign nature. * **Lymph Nodes:** Unlike SCC, the regional lymph nodes are usually enlarged due to **infection** (lymphadenitis), not metastasis. * **Treatment:** Wide local excision.

Question 687: All are true statements about hernias EXCEPT?

A. An abdominal hernia needs no repair. (Correct Answer)
B. A femoral hernia needs repair.
C. A small hernia is more dangerous than a large hernia.
D. A painful strangulated hernia should be repaired even after being reduced after anesthetics and analgesics.

Explanation: **Explanation:** The primary goal of hernia management is to prevent life-threatening complications like **obstruction and strangulation**. **1. Why Option A is the Correct Answer (The False Statement):** An abdominal hernia generally **does require repair**. While "watchful waiting" may be considered for asymptomatic, wide-necked inguinal hernias in elderly patients, the standard surgical principle is that hernias are progressive anatomical defects that do not heal spontaneously. Leaving them untreated risks incarceration and strangulation, which significantly increases morbidity and mortality compared to elective repair. **2. Analysis of Other Options:** * **Option B:** Femoral hernias have a very narrow, rigid neck (the femoral ring). They have the **highest risk of strangulation** (approx. 40%) among all abdominal hernias. Therefore, they must always be repaired, often urgently. * **Option C:** A small hernia with a narrow neck is more dangerous than a large hernia with a wide neck. In a large defect, contents move freely; in a small, tight defect, the risk of the bowel getting trapped (incarcerated) and having its blood supply cut off (strangulated) is much higher. * **Option D:** If a strangulated hernia reduces spontaneously (e.g., due to muscle relaxation from anesthesia), the surgeon must still perform an **exploratory laparotomy or laparoscopy**. This is crucial to inspect the previously trapped segment of the bowel for gangrene or "reduction en masse." **Clinical Pearls for NEET-PG:** * **Most common hernia (overall):** Indirect Inguinal Hernia. * **Most common hernia in females:** Indirect Inguinal Hernia (though Femoral hernias are *more common* in females than in males). * **Richter’s Hernia:** Only a portion of the bowel wall is trapped; it can strangulate without causing signs of intestinal obstruction. * **Maydl’s Hernia:** "Retrograde strangulation" where two loops are in the sac, but the intervening loop inside the abdomen is the one that becomes gangrenous.

Question 688: A female developed a well-circumscribed swelling on the nape of her neck. It is not transilluminant, painless, and easily movable. Which of the following conditions is NOT brilliantly transilluminant?

A. Vaginal hydrocele of an infant
B. Cystic hygroma
C. Sacral meningocele
D. Lipoma (Correct Answer)

Explanation: **Explanation:** The clinical presentation described—a well-circumscribed, painless, and mobile swelling on the nape of the neck—is classic for a **Lipoma**. The core concept being tested here is **transillumination**, a clinical sign where light passes through a swelling containing clear fluid, making it appear "brilliant" or glowing. **1. Why Lipoma is the Correct Answer:** A lipoma is a benign tumor composed of mature adipocytes (fat cells). Because it consists of solid, fatty tissue rather than clear fluid, it is **opaque** and does not transilluminate. Lipomas are often referred to as "Universal Tumors" and typically present with a characteristic "slip sign." **2. Analysis of Incorrect Options (Brilliantly Transilluminant Conditions):** * **Vaginal hydrocele:** This is a collection of clear serous fluid within the tunica vaginalis. Since the fluid is clear and the covering is thin, it transilluminates brilliantly. * **Cystic hygroma:** This is a congenital lymphatic malformation (usually in the neck) containing clear lymph. Its thin-walled multilocular cysts allow light to pass through easily. * **Sacral meningocele:** This involves the protrusion of meninges containing Cerebrospinal Fluid (CSF). As CSF is a clear, water-like fluid, these swellings are transilluminant. **Clinical Pearls for NEET-PG:** * **Rule of Thumb:** For a swelling to be transilluminant, it must contain **clear fluid** and have **thin skin/coverings**. * **Non-transilluminant fluids:** Swellings containing blood (haematocele), pus (abscess), or thick chyle will not transilluminate. * **Mnemonic for Transilluminant Swellings:** **"CHiPS"** – **C**ystic hygroma, **H**ydrocele, **P**haryngeal pouch (sometimes), **S**pina bifida (meningocele). * **The Slip Sign:** This is a pathognomonic clinical feature of lipomas where the edge of the tumor slips away from the examining finger.

Question 689: What is the typical behavior of an eruption cyst?

A. Transforms into a dentigerous cyst.
B. Regresses after the eruption of the tooth. (Correct Answer)
C. Is found in the location of a missing tooth.
D. Is a type of dentigerous cyst.

Explanation: ### Explanation An **eruption cyst** is a soft tissue analogue of a dentigerous cyst. It occurs when the dental follicle separates from the crown of an erupting tooth within the soft tissues overlying the alveolar bone. **Why Option B is Correct:** The eruption cyst is a self-limiting condition. As the tooth continues its natural erupting path, it pierces the roof of the cyst. Once the tooth crown breaks through the gingival surface into the oral cavity, the cystic fluid drains, and the lesion **regresses spontaneously**. No surgical intervention is usually required unless the cyst becomes infected or symptomatic. **Analysis of Incorrect Options:** * **Option A:** It does not transform into a dentigerous cyst; rather, it is considered the extra-osseous (soft tissue) counterpart of one. * **Option C:** This describes a **primordial cyst**, which develops in place of a tooth that failed to form. Eruption cysts occur specifically over a tooth that is currently erupting. * **Option D:** While histologically similar, an eruption cyst is technically an **extra-alveolar** lesion, whereas a dentigerous cyst is **intra-osseous** (enclosing the crown of an unerupted tooth within the bone). **NEET-PG High-Yield Pearls:** * **Clinical Appearance:** Presents as a soft, fluctuant, often bluish-purple swelling (if filled with blood, it is called an **eruption hematoma**) on the alveolar ridge. * **Common Site:** Most frequently seen in the deciduous maxillary incisors and first permanent molars. * **Management:** "Masterly inactivity" (observation). If eruption is delayed, a simple incision (fenestration) of the cyst roof may be performed.

Question 690: What is the primary principle for managing diabetic foot?

A. Strict glycemic control (Correct Answer)
B. Topical antibiotics are essential
C. Protecting the unaffected limb
D. Early surgical amputation

Explanation: **Explanation:** The management of diabetic foot follows a multidisciplinary approach, but the **primary principle** and cornerstone of therapy is **strict glycemic control**. Hyperglycemia impairs the body's innate immune response, specifically inhibiting neutrophil chemotaxis and phagocytosis, which delays wound healing and increases the risk of secondary infections. Without stabilizing blood glucose levels, local wound care and surgical interventions are significantly less effective. **Analysis of Options:** * **A. Strict glycemic control (Correct):** Optimal glucose levels (HbA1c <7%) are essential to restore microvascular function and cellular immunity, providing the physiological foundation for healing. * **B. Topical antibiotics are essential:** This is incorrect. Topical antibiotics are generally discouraged as they do not penetrate deep tissues effectively and can lead to bacterial resistance. Systemic antibiotics are preferred for clinically infected ulcers. * **C. Protecting the unaffected limb:** While important for long-term morbidity prevention, it is a secondary preventive measure rather than the primary management principle for an existing diabetic foot condition. * **D. Early surgical amputation:** Amputation is a last resort (salvage procedure). The goal of modern management is "limb salvage" through debridement, offloading, and revascularization. **Clinical Pearls for NEET-PG:** * **Wagner’s Classification:** Used to grade the severity of diabetic foot ulcers (Grade 0 to 5). * **Offloading:** The most important local factor in healing neuropathic ulcers (e.g., Total Contact Casting). * **Monofilament Test:** The 10g Semmes-Weinstein monofilament is the gold standard for screening "loss of protective sensation" (LOPS). * **Rule of 15:** A diabetic foot ulcer is often defined as a lesion below the ankle involving a full-thickness defect of the dermis.

Practice by Chapter

Wound Healing and Care

Practice Questions

Surgical Infections

Practice Questions

Fluid and Electrolyte Management

Practice Questions

Nutrition in Surgical Patients

Practice Questions

Hemostasis and Blood Transfusion

Practice Questions

Surgical Instruments and Equipment

Practice Questions

Sutures and Stapling Devices

Practice Questions

Minimal Access Surgery Principles

Practice Questions

Surgical Complications

Practice Questions

Anesthesia Principles for Surgeons

Practice Questions

Surgical Oncology Principles

Practice Questions

Evidence-Based Surgery

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free