Plastic and Reconstructive Surgery — MCQs
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A 3.3 kg, 36-week baby girl was born prematurely after labor caused by ruptured membranes. Prenatal ultrasound revealed polyhydramnios at 26 weeks. Fetal echocardiogram was normal and amniocentesis was without genetic aberrance. On examination, there was a normal anus, and a nasogastric tube drained bile-stained fluid. The baby passed some mucus but no typical dark meconium. A chest and abdominal X-ray showed a "double bubble sign". What is the most likely diagnosis?
What is the world's largest charity dedicated to cleft lip and palate treatment?
Which of the following statements regarding an axial flap is true?
Millard's 'Rule of Ten' includes all except?
According to Veau's classification, which class does the diagrammatic representation of cleft palate belong to?
Acanthosis nigricans is typically associated with which of the following conditions?
Which of the following flaps are used for lip reconstruction?
What is the recommended incision for a felon?
Which of the following is NOT a method for operating on a cleft lip?
What is Zadek's procedure?
Plastic and Reconstructive Surgery Indian Medical PG Practice Questions and MCQs
Question 131: A 3.3 kg, 36-week baby girl was born prematurely after labor caused by ruptured membranes. Prenatal ultrasound revealed polyhydramnios at 26 weeks. Fetal echocardiogram was normal and amniocentesis was without genetic aberrance. On examination, there was a normal anus, and a nasogastric tube drained bile-stained fluid. The baby passed some mucus but no typical dark meconium. A chest and abdominal X-ray showed a "double bubble sign". What is the most likely diagnosis?
- A. Acute pancreatitis
- B. Neonatal Hirschsprung's disease
- C. Duodenal atresia (Correct Answer)
- D. Malrotation of midgut
Explanation: ### Explanation **Correct Answer: C. Duodenal Atresia** The clinical presentation is classic for **Duodenal Atresia**. The key diagnostic feature is the **"double bubble sign"** on X-ray, which represents air in the dilated stomach and the proximal duodenum, with no distal gas. * **Pathophysiology:** It results from a failure of recanalization of the duodenum during the 8th–10th week of gestation. * **Clinical Correlation:** Polyhydramnios is common (due to inability to swallow/absorb amniotic fluid). Postnatally, it presents with **bilious vomiting** (as the obstruction is usually distal to the ampulla of Vater) and a scaphoid abdomen. While 30% of cases are associated with Down Syndrome (Trisomy 21), this patient had a normal amniocentesis, which is possible. **Why other options are incorrect:** * **A. Acute Pancreatitis:** Extremely rare in neonates; it does not present with a double bubble sign or a history of polyhydramnios. * **B. Neonatal Hirschsprung's Disease:** This is a distal bowel obstruction. It presents with delayed passage of meconium (>48 hours) and **distended bowel loops** on X-ray, not a double bubble sign. * **D. Malrotation of Midgut:** While Volvulus can cause a double bubble sign, it is usually an acute surgical emergency presenting later with sudden onset bilious vomiting in a previously healthy infant. The history of polyhydramnios strongly favors atresia over malrotation. **High-Yield NEET-PG Pearls:** * **Double Bubble Sign:** Seen in Duodenal Atresia, Annular Pancreas, and Midgut Volvulus. * **Triple Bubble Sign:** Associated with **Jejunal Atresia**. * **Ground Glass Appearance/Neuhauser Sign:** Associated with **Meconium Ileus**. * **Association:** Duodenal atresia is the most common obstructive lesion of the small intestine in neonates and is associated with **VACTERL** anomalies and Down Syndrome.
Question 132: What is the world's largest charity dedicated to cleft lip and palate treatment?
- A. Smile Train (Correct Answer)
- B. THETA program
- C. Bright Futures program
- D. SHARP
Explanation: **Explanation:** **Correct Answer: A. Smile Train** Smile Train is the world’s largest cleft-focused organization. Unlike traditional mission-based models, it utilizes a "sustainable" approach by training and empowering local medical professionals in over 70 countries to provide 100% free cleft repair surgery and comprehensive care (speech therapy, nutrition, and orthodontics) year-round. Cleft lip and palate are among the most common congenital craniofacial anomalies, and Smile Train has supported over 1.5 million surgeries globally since its inception in 1999. **Incorrect Options:** * **B. THETA program:** This usually refers to "Targeted Health Education and Training" or specific regional health initiatives, but it is not a global charity dedicated to cleft care. * **C. Bright Futures program:** This is a national health promotion and prevention initiative led by the American Academy of Pediatrics (AAP) focused on pediatric primary care and wellness visits. * **D. SHARP:** In a medical context, this often refers to "Sustainable Health Advocacy and Research" or specific safety protocols (like needle-stick injury prevention), but it is not a cleft-specific charity. **High-Yield Clinical Pearls for NEET-PG:** 1. **Rule of 10s (Millard’s Rule):** Criteria for cleft lip repair—10 weeks of age, 10 lbs weight, and 10 g/dL hemoglobin. 2. **Timing of Surgery:** Cleft Lip repair is typically done at **3–6 months**; Cleft Palate repair is done at **9–18 months** (to allow for speech development but prevent maxillary growth inhibition). 3. **Most Common Type:** Isolated cleft palate is more common in females, while cleft lip (with or without palate) is more common in males. 4. **Muscle involved:** In cleft palate, the **Levator veli palatini** is the most important muscle that requires anatomical repositioning.
Question 133: Which of the following statements regarding an axial flap is true?
- A. It carries its own vessels within it. (Correct Answer)
- B. It is kept in a limb.
- C. It is a transverse flap.
- D. It carries its own nerve within it.
Explanation: ### Explanation **Concept Overview:** Skin flaps are classified based on their blood supply into two main categories: **Random Pattern Flaps** and **Axial Pattern Flaps**. **Why Option A is Correct:** An **Axial Flap** is defined by the presence of a **named anatomical artery and vein** (pedicle) running along its long axis within the subcutaneous tissue. Because it carries its own dedicated vessels, these flaps have a much more reliable blood supply compared to random flaps. This allows for a significantly larger length-to-width ratio (often exceeding 3:1 or 4:1), as the flap is not dependent on the limited subdermal plexus alone. **Analysis of Incorrect Options:** * **Option B (Kept in a limb):** While axial flaps can be used in limb reconstruction (e.g., Radial Artery Forearm Flap), they are not restricted to limbs. They are used throughout the body (e.g., Groin flap, Deltopectoral flap). * **Option C (Transverse flap):** Axial flaps are defined by their vascular anatomy, not their orientation. While some may be transverse, the defining feature is the longitudinal axis of the vessel. * **Option D (Carries its own nerve):** While some flaps can be "sensate" (neurosensory flaps) if a nerve is included, this is not the defining characteristic of an axial flap. The fundamental requirement is the vascular pedicle. **High-Yield NEET-PG Pearls:** * **Classic Example:** The **Groin Flap** (based on the Superficial Circumflex Iliac Artery) was the first described axial pattern flap. * **Length-Width Ratio:** Random flaps are generally limited to a **1:1 or 2:1** ratio to prevent distal necrosis; axial flaps bypass this restriction. * **Island Flap:** If an axial flap is detached from the skin and remains attached only by its vessel stalk, it is called an "Island Flap." * **Free Flap:** If the axial vessels are cut and re-anastomosed at a distant site using microvascular surgery, it becomes a "Free Flap."
Question 134: Millard's 'Rule of Ten' includes all except?
- A. 10 lbs
- B. 10 weeks
- C. 10 gm% Hemoglobin
- D. 10 months (Correct Answer)
Explanation: ### Explanation The **Rule of Ten** was formulated by **Wilhelmmesen and Musgrave** (often associated with **Ralph Millard**) as a set of safety guidelines to determine the optimal timing for the surgical repair of a **cleft lip**. The primary goal is to ensure the infant is physiologically mature enough to withstand general anesthesia and the stress of surgery. **Why Option D is the Correct Answer:** The rule specifies **10 weeks**, not 10 months. Cleft lip repair (Cheiloplasty) is typically performed early in infancy (around 3 months of age) to facilitate better feeding, bonding, and speech development. Waiting until 10 months would unnecessarily delay these benefits. **Analysis of Other Options:** * **A. 10 lbs:** The infant should weigh at least 10 pounds (approx. 4.5 kg) to ensure adequate nutritional status and physical bulk for the procedure. * **B. 10 weeks:** This is the standard age requirement. It allows the neonatal period to pass, reducing anesthetic risks and allowing for the stabilization of any congenital anomalies. * **C. 10 gm% Hemoglobin:** A minimum hemoglobin level of 10 g/dL ensures adequate oxygen-carrying capacity during surgery and anesthesia. **High-Yield Clinical Pearls for NEET-PG:** * **Cleft Lip Repair:** Usually done at **3 months** (Rule of 10). The most common technique is **Millard’s Rotation-Advancement Flap**. * **Cleft Palate Repair:** Usually done between **6 to 12 months** (before the child starts speaking to prevent compensatory speech patterns). Common techniques include **Wardill-Kilner (V-Y pushback)** or **Bardach’s Two-Flap** palatoplasty. * **WBC Count:** Some versions of the rule also include a White Blood Cell (WBC) count of less than **10,000/mm³** to ensure the absence of active infection.
Question 135: According to Veau's classification, which class does the diagrammatic representation of cleft palate belong to?
- A. Class 1 (Correct Answer)
- B. Class 2
- C. Class 3
- D. Class 4
Explanation: ***Class 1*** - Involves only the **soft palate** and **uvula**, sparing the hard palate completely. - This is the mildest form of cleft palate according to **Veau's classification**, affecting only the posterior portion of the palate. *Class 2* - Extends through both the **soft palate** and **hard palate** but does not reach the **alveolar ridge**. - More extensive than Class 1 as it involves the **entire palate** except the anterior alveolar process. *Class 3* - Involves a **unilateral complete cleft** extending through the soft palate, hard palate, and **alveolar ridge** on one side. - Often associated with **unilateral cleft lip** and creates communication between oral and nasal cavities. *Class 4* - Represents a **bilateral complete cleft** involving soft palate, hard palate, and **both alveolar ridges**. - The most severe form, often associated with **bilateral cleft lip** and significant feeding and speech difficulties.
Question 136: Acanthosis nigricans is typically associated with which of the following conditions?
- A. Gastrointestinal malignancy
- B. Lung cancer
- C. Breast cancer
- D. All of the above (Correct Answer)
Explanation: **Explanation:** Acanthosis Nigricans (AN) is a dermatological manifestation characterized by hyperpigmented, velvety plaques typically found in intertriginous areas (axilla, neck, and groin). While most commonly associated with insulin resistance and obesity (Benign AN), its sudden onset in an older, non-obese individual often signals **Malignant Acanthosis Nigricans**. **Why "All of the above" is correct:** Malignant AN is a **paraneoplastic syndrome** caused by the secretion of Transforming Growth Factor-alpha (TGF-α) or Epidermal Growth Factor (EGF) by tumor cells. These factors stimulate keratinocyte and fibroblast proliferation. * **Gastrointestinal Malignancy:** This is the most common association (approx. 90% of cases), with **Gastric Adenocarcinoma** being the single most frequent primary site. * **Lung and Breast Cancer:** While less common than GI triggers, both are well-documented causes of paraneoplastic AN. Other associated sites include the liver, prostate, and ovaries. **Clinical Pearls for NEET-PG:** * **Tripe Palms:** When AN involves the palms (appearing rugose and thickened), it is highly suggestive of internal malignancy. If seen with AN, think **Gastric Cancer**; if seen alone, think **Lung Cancer**. * **Leser-Trélat Sign:** The sudden eruption of multiple seborrheic keratoses is often seen alongside malignant AN, both indicating an underlying visceral malignancy. * **Distinction:** Unlike benign AN, the malignant form is characterized by rapid onset, extensive involvement, and involvement of atypical sites like the mucous membranes or palms. **Summary:** Because AN serves as a non-specific cutaneous marker for various internal adenocarcinomas, all the listed options are potential underlying causes.
Question 137: Which of the following flaps are used for lip reconstruction?
- A. Webster-Bernard flap/repair
- B. Karapandzic flap
- C. Abbe-Estlander flap
- D. All of the above (Correct Answer)
Explanation: Lip reconstruction is a common high-yield topic in plastic surgery, focusing on restoring both functional competence (oral sphincter) and aesthetic appearance. The choice of flap depends on the size and location of the defect. **Explanation of Options:** * **Abbe-Estlander Flap:** These are **cross-lip arterialized flaps** based on the labial artery. * **Abbe flap:** Used for central defects of the upper or lower lip (not involving the commissure). * **Estlander flap:** Specifically used for defects involving the **oral commissure**. * **Karapandzic Flap:** This is a **musculocutaneous rotation-advancement flap**. It is unique because it preserves the neurovascular supply (nerve and blood vessels), maintaining the motor and sensory function of the lip. It is ideal for medium to large (1/2 to 2/3) lip defects. * **Webster-Bernard Flap:** This is a **cheek advancement flap** used for total or near-total lower lip reconstruction. It involves excising triangles (Burow’s triangles) from the nasolabial area to allow the cheeks to be moved medially. Since all three techniques are established methods for lip reconstruction, **Option D** is the correct answer. **High-Yield Clinical Pearls for NEET-PG:** 1. **Rule of Thirds:** Defects <1/3 of the lip can usually be closed primarily. Defects 1/3 to 2/3 require flaps like Abbe or Karapandzic. Defects >2/3 require Webster-Bernard or free flaps. 2. **Microstomia:** A common complication of the Karapandzic flap is a decrease in the size of the oral aperture (microstomia). 3. **Innervation:** The Karapandzic flap is the best choice for maintaining a **functional (dynamic) sphincter**.
Question 138: What is the recommended incision for a felon?
- A. Transverse
- B. Longitudinal (Correct Answer)
- C. Bilateral longitudinal
- D. Fish mouth
Explanation: **Explanation:** A **felon** is a closed-space infection of the terminal pulp space of the finger. Because this space is divided into multiple small compartments by tough fibrous septa (connecting the skin to the periosteum), pressure builds up rapidly, leading to intense pain and potential necrosis of the distal phalanx. **Why Longitudinal is Correct:** The current standard of care for a felon is a **unilateral longitudinal incision** made over the area of maximum tenderness. This approach is preferred because: 1. It provides direct drainage of the infected compartments. 2. It avoids crossing the flexion creases. 3. It minimizes damage to the digital nerves and vessels. 4. It prevents the formation of unstable scars on the tactile surface of the fingertip. **Analysis of Incorrect Options:** * **Transverse:** This is contraindicated as it does not adequately drain the longitudinal fibrous septa and risks damaging the digital neurovascular bundles. * **Bilateral longitudinal:** This was historically used but is now discouraged as it can lead to an anesthetic "floating" fingertip and significant scarring. * **Fish mouth:** This involves a circumferential incision around the tip. It is strongly condemned because it destroys the blood supply to the pulp, leads to a painful, unstable scar, and often results in permanent sensory loss. **High-Yield Clinical Pearls for NEET-PG:** * **Most common organism:** *Staphylococcus aureus*. * **Complication:** If left untreated, a felon can lead to **osteomyelitis** of the distal phalanx (due to pressure necrosis of the nutrient artery). * **Incision Rule:** Always avoid the "pinch" area (the tactile pad) to prevent painful scars. * **Kanavel’s Signs:** Remember these are for **Tenosynovitis**, not a felon (a common point of confusion in exams).
Question 139: Which of the following is NOT a method for operating on a cleft lip?
- A. Le Muserier's method
- B. Tennison's method
- C. Millar's method
- D. Wardill's method (Correct Answer)
Explanation: **Explanation:** The correct answer is **D. Wardill’s method**. **1. Why Wardill’s method is the correct answer:** Wardill’s method (specifically the **Wardill-Kilner V-Y pushback technique**) is a surgical procedure used for **Cleft Palate** repair, not cleft lip. Its primary goal is to lengthen the soft palate to improve velopharyngeal function and speech outcomes. **2. Analysis of incorrect options (Methods for Cleft Lip):** * **Le Mesurier’s method:** A historical technique for unilateral cleft lip repair that uses a **rectangular flap** to reconstruct the Cupid’s bow. * **Tennison’s method:** Also known as the **Tennison-Randall technique**, this uses a **triangular flap** (Z-plasty principle) in the lower third of the lip to provide length. * **Millard’s method:** Currently the most widely used technique globally, also known as the **Rotation-Advancement flap**. It preserves the Cupid’s bow and hides the scar along the natural philtral column. **3. Clinical Pearls for NEET-PG:** * **Rule of 10s (for Cleft Lip surgery):** Surgery is typically performed when the infant is at least **10 weeks** old, weighs **10 lbs**, and has a hemoglobin of **10 g/dL**. * **Cleft Palate timing:** Usually repaired between **9 to 18 months** of age to allow for maxillary growth but before significant speech development. * **Other Palate repairs:** Aside from Wardill-Kilner, look out for **Veau’s operation** and **Bardach’s two-flap palatoplasty**. * **Most common type:** Left-sided unilateral cleft lip is more common than right-sided.
Question 140: What is Zadek's procedure?
- A. Resection of part of the nail with the nail bed
- B. Resection of the complete nail with part of the nail bed (Correct Answer)
- C. Injection of phenol at the base of the toenail
- D. Wide excision of the nail
Explanation: **Explanation:** **Zadek’s procedure** is a definitive surgical treatment for recurrent or severe **Ingrowing Toenail (Onychocryptosis)**. 1. **Why Option B is Correct:** The core principle of Zadek’s procedure is the **permanent ablation** of the nail. It involves the total avulsion (removal) of the nail plate followed by the **complete excision of the germinal matrix** (the part of the nail bed responsible for nail growth). By removing the germinal matrix, the nail is prevented from ever regrowing, thus providing a permanent cure for chronic recurrence. 2. **Why Other Options are Incorrect:** * **Option A:** Resecting only part of the nail bed is characteristic of a partial matricectomy (like the Wedge Resection or Winograd procedure), not Zadek’s, which is a total ablation. * **Option C:** The injection or application of phenol is known as **Phenolization**. While it also aims to destroy the germinal matrix, it is a chemical cauterization method, whereas Zadek’s is a formal surgical excision. * **Option D:** "Wide excision" is a vague term; Zadek’s is specifically targeted at the germinal matrix and the nail bed, not a wide local excision of surrounding healthy tissue. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** Reserved for patients with recurrent ingrowing toenails where conservative or less radical surgeries have failed. * **Anatomy:** The germinal matrix extends approximately 5-8 mm proximal to the visible nail fold; failure to excise this entire area leads to "spicule" regrowth. * **Alternative:** **Vandenbos procedure** is another surgical option that focuses on removing the overgrown skin (soft tissue) rather than the nail bed itself. * **Quaternary Ammonium Compounds:** Often used for preoperative skin preparation in these cases.
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Wound Healing
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Skin Grafts
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Flap Surgery Principles
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Local Flaps
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Regional Flaps
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Microsurgical Techniques
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Tissue Expansion
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Breast Reconstruction
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Hand Surgery Basics
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Craniofacial Surgery Principles
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Aesthetic Surgery Concepts
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Body Contouring
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