Blepharoplasty — MCQs
In congenital ptosis, surgery should be performed at the earliest to prevent amblyopia. Which of the following operations is not typically used for the correction of congenital ptosis?
Objectives of pre-prosthetic surgical procedures include all, except:
What is the condition commonly known as jumper's knee?
MC site of basal cell carcinoma of eyelid:
What is the most likely complication of the condition shown in the image below?
Which of the following surgeries is contraindicated below 12 years of age?
Gold standard procedure to reduce recurrence of pterygium after surgical excision is
A 35-year-old woman underwent rhinoplasty 6 months ago and now presents with nasal valve collapse and breathing difficulty. Examination shows pinched nasal tip and alar retraction. Preoperative photos show she had thin skin and weak lower lateral cartilages. Evaluate the most likely cause and best preventive strategy.
A 40-year-old man with total nasal reconstruction using paramedian forehead flap develops partial flap necrosis at the tip on post-op day 5. Doppler shows absent flow in distal 1 cm. Previous history reveals he is a heavy smoker (20 cigarettes/day). What would be the best surgical strategy if this procedure were to be revised?
A 28-year-old woman undergoes open rhinoplasty. On table, after osteotomies, significant asymmetry is noted with deviation of nasal bones to the right. Analysis reveals the right osteotomy is more lateral than the left. What is the best explanation for the persistent deviation?
Blepharoplasty Indian Medical PG Practice Questions and MCQs
Question 1: In congenital ptosis, surgery should be performed at the earliest to prevent amblyopia. Which of the following operations is not typically used for the correction of congenital ptosis?
- A. Blaskowics' operation
- B. Everbusch's operation
- C. Frontalis sling operation
- D. Modified Burrow's operation (Correct Answer)
Explanation: ***Modified Burrow's operation*** - The **Modified Burrow's operation** is primarily used in oculoplastic surgery for the correction of **entropion** or **ectropion**, and to resect redundant skin and muscle, not for ptosis correction. - It involves removing a strip of skin and orbicularis muscle, which does not address the underlying levator muscle weakness or disinsertion typical of congenital ptosis. *Blaskowics' operation* - This procedure involves an **anterior approach** to resect and advance the **levator aponeurosis** and Müller's muscle. - It is used for **mild to moderate congenital ptosis** with residual levator function (levator function >4-5 mm). *Everbusch's operation* - An **external approach** to resect the **levator muscle** or aponeurosis to elevate the eyelid. - It is used for **moderate congenital ptosis** where there is some residual levator function. *Frontalis sling operation* - This is a **suspension procedure** that connects the eyelid to the **frontalis muscle** using autogenous fascia lata, silicone rod, or other materials. - It is the procedure of choice for **severe congenital ptosis with poor levator function** (<4 mm), allowing the patient to use the frontalis muscle to elevate the eyelid.
Question 2: Objectives of pre-prosthetic surgical procedures include all, except:
- A. All of the above (Correct Answer)
- B. Removal of epulis fissuratum
- C. Correction of unfavorably located frenular attachments
- D. Vestibuloplasty
Explanation: ***All of the above*** - The question asks for what is *not* an objective of pre-prosthetic surgical procedures, and since the specific options provided (removal of epulis fissuratum, correction of unfavorably located frenular attachments, and vestibuloplasty) are indeed common objectives, "All of the above" is the correct choice, indicating that none of these procedures are exceptions to the objectives. - The other options represent specific objectives, meaning that they are *included* in the goals of pre-prosthetic surgery. *Removal of epulis fissuratum* - **Epulis fissuratum** is a hyperplastic tissue growth often caused by ill-fitting dentures, and its removal is a common pre-prosthetic surgical procedure. - Its presence can interfere with **denture stability** and cause discomfort, thus its removal is an important objective. *Correction of unfavorably located frenular attachments* - **Frenular attachments** that are too high or thick can dislodge a denture or cause pain, and their surgical correction (frenectomy) is a standard pre-prosthetic procedure. - This procedure aims to improve **denture retention** and comfort by modifying the soft tissue architecture. *Vestibuloplasty* - **Vestibuloplasty** is a surgical procedure designed to increase the depth of the **vestibule**, which is essential for improving denture stability and retention. - This procedure creates a more favorable anatomical foundation for **denture support**, especially in cases of severe alveolar ridge resorption.
Question 3: What is the condition commonly known as jumper's knee?
- A. Inflammation of the patellar tendon at its insertion on the patella.
- B. Tendinopathy of the quadriceps tendon.
- C. Injury to the hamstring tendon.
- D. Patellar tendonitis due to overuse of the patellar tendon. (Correct Answer)
Explanation: ***Patellar tendonitis due to overuse of the patellar tendon.*** - **Jumper's knee** is the common term for **patellar tendonitis**, which specifically refers to inflammation of the patellar tendon. - This condition is frequently caused by **overuse**, especially in activities involving repetitive jumping and landing. *Inflammation of the patellar tendon at its insertion on the patella.* - While jumper's knee does involve inflammation of the patellar tendon, it is more commonly at its insertion on the **tibial tubercle** or specifically its origin at the **inferior pole of the patella**, not necessarily at the patella itself. - This option is less precise as it describes only one aspect of the condition without mentioning the critical role of overuse. *Tendinopathy of the quadriceps tendon.* - **Tendinopathy of the quadriceps tendon** is a distinct condition affecting the tendon above the patella, known as **quadriceps tendinopathy**. - It presents with pain proximal to the patella, differentiating it from jumper's knee, which involves the tendon distal to the patella. *Injury to the hamstring tendon.* - An **injury to the hamstring tendon** would cause pain and symptoms on the posterior aspect of the knee or thigh. - This is completely unrelated to jumper's knee, which is characterized by anterior knee pain.
Question 4: MC site of basal cell carcinoma of eyelid:
- A. Medial canthus
- B. Lower eyelid (Correct Answer)
- C. Upper eyelid
- D. Outer canthus
Explanation: ***Lower eyelid*** - The **lower eyelid** is the most common site for basal cell carcinoma (BCC) of the eyelid, accounting for approximately **50-60%** of all eyelid BCCs. - This high frequency is due to increased exposure to **UV radiation**, which is the primary risk factor for BCC development. - BCC often presents as a **pearly nodule** with telangiectasias and central ulceration, frequently found on the lower lid margin. *Medial canthus* - The medial canthus is the **second most common site**, accounting for approximately **25-30%** of eyelid BCCs. - Tumors in this area can be **more aggressive** and challenging to treat due to proximity to the lacrimal system and orbital structures. - Medial canthal BCCs may require more extensive surgical reconstruction. *Upper eyelid* - The upper eyelid accounts for only **10-15%** of eyelid BCCs, making it significantly **less common** than the lower eyelid. - This is due to **less direct sun exposure** compared to the lower lid, as the upper lid is often shaded by the brow. *Outer canthus* - The outer (lateral) canthus is the **least common site**, accounting for only about **5%** of eyelid BCCs. - Tumors here may present with similar features but are much less frequently encountered than those on the lower lid or medial canthus.
Question 5: What is the most likely complication of the condition shown in the image below?
- A. Exposure Keratitis (Correct Answer)
- B. Difficulty in eye movement
- C. Cataract
- D. Glaucoma
Explanation: ***Exposure Keratitis*** - The image shows **proptosis** (exophthalmos) of the right eye, where the eyeball protrudes forward. This condition often leads to incomplete eyelid closure (lagophthalmos). - **Exposure keratitis** occurs when the cornea is inadequately covered by the eyelids, leading to drying and damage due to constant exposure to air and environmental factors. *Difficulty in eye movement* - While **proptosis** can sometimes be associated with restricted eye movements (e.g., in severe Graves' ophthalmopathy due to muscle swelling), it is not the **most likely direct complication** of the exposure itself. - The image primarily depicts the physical displacement of the globe, which predisposes to corneal issues, not necessarily oculomotor dysfunction as the primary complication. *Cataract* - **Cataracts** are opacities of the lens and are typically associated with aging, trauma, or certain systemic conditions (e.g., diabetes, steroid use). - They are not a direct or common complication of **proptosis** or the resulting **exposure of the ocular surface**. *Glaucoma* - **Glaucoma** is a group of conditions characterized by damage to the optic nerve, often due to elevated intraocular pressure. - While severe **proptosis** leading to orbital congestion can theoretically increase intraocular pressure, it is not the most direct or prevalent complication compared to **exposure keratitis**, which is a direct consequence of inadequate globe protection.
Question 6: Which of the following surgeries is contraindicated below 12 years of age?
- A. SMR (Correct Answer)
- B. Rhinoplasty
- C. Septoplasty
- D. Antral puncture
Explanation: ***SMR (Submucous Resection of the septum)*** - SMR procedure involves removing a significant portion of the **septal cartilage and bone**, which is crucial for nasal growth. - Performing SMR before 12 years of age can lead to severe **facial growth disturbances**, such as a saddle nose deformity, due to interference with the septal growth plate. *Rhinoplasty* - While rhinoplasty is generally delayed until nasal growth is complete (around 15-16 years old for girls, 16-17 for boys), it is not absolutely contraindicated structurally before 12 in the same way SMR is. - The concern is primarily about final aesthetic outcome and patient maturity, not direct damage to major growth centers. *Septoplasty* - **Septoplasty** can be performed in younger children for severe nasal obstruction, especially if it significantly impacts breathing or sleep. - It involves reshaping or repositioning the **septal cartilage and bone** with minimal removal, preserving growth potential. *Antral puncture* - **Antral puncture** (or antral lavage) is a procedure to drain the maxillary sinus and can be performed at any age when indicated for sinusitis. - It does not interfere with facial growth as it targets the sinus cavity walls and does not involve the nasal septum.
Question 7: Gold standard procedure to reduce recurrence of pterygium after surgical excision is
- A. Thiotepa
- B. Amniotic membrane grafting
- C. Conjunctival autograft (Correct Answer)
- D. Beta-radiation
Explanation: ***Conjunctival autograft*** - **Conjunctival autografting** involves transplanting a piece of healthy conjunctiva from the superior bulbar conjunctiva to the bare scleral bed after pterygium excision, acting as a barrier to fibrovascular proliferation. - This technique has consistently shown the **lowest recurrence rates** in comparative studies, making it the **gold standard** for preventing pterygium recurrence due to its high success rate and safety profile. *Thiotepa* - **Thiotepa** is an **antimetabolite** that inhibits DNA synthesis and cell proliferation, used topically post-excision to reduce recurrence by suppressing fibroblast activity. - While it can lower recurrence rates compared to simple excision, its efficacy is generally **less than conjunctival autografting**, and it carries risks of corneal toxicity and limbal stem cell deficiency. *Amniotic membrane grafting* - **Amniotic membrane grafting** involves placing processed amniotic membrane over the scleral bed, which has anti-inflammatory, anti-scarring, and pro-epithelialization properties. - It is an effective option, especially for **large pterygia** or for patients at high risk of recurrence, but its recurrence rates are generally **not as low as those achieved with conjunctival autografting**, and the graft can sometimes detach. *B- radiation* - **Beta-radiation** (strontium-90) is a form of adjuvant therapy applied to the scleral bed immediately after pterygium excision to inhibit fibroblast proliferation and reduce recurrence. - It is effective but associated with potential complications such as **scleral melt**, corneal scarring, and cataract formation, making it a less preferred option than conjunctival autografting, especially in primary cases.
Question 8: A 35-year-old woman underwent rhinoplasty 6 months ago and now presents with nasal valve collapse and breathing difficulty. Examination shows pinched nasal tip and alar retraction. Preoperative photos show she had thin skin and weak lower lateral cartilages. Evaluate the most likely cause and best preventive strategy.
- A. Excessive cartilage resection; should have preserved structural support and used spreader grafts (Correct Answer)
- B. Infection causing cartilage dissolution; prophylactic antibiotics would have prevented this
- C. Keloid formation; preoperative steroid injection indicated
- D. Normal healing process; no preventive strategy needed
Explanation: ***Excessive cartilage resection; should have preserved structural support and used spreader grafts*** - The patient presents with **nasal valve collapse**, **pinched tip**, and **alar retraction**, which are classic signs of iatrogenic deformity caused by aggressive removal of the **lower lateral cartilages**. - In patients with **thin skin** and **weak cartilages**, maintaining structural integrity is crucial; **spreader grafts** are indicated to support the internal nasal valve and prevent postoperative narrowing. *Infection causing cartilage dissolution; prophylactic antibiotics would have prevented this* - While **nasal infections** can cause structural damage, they typically present with acute **erythema, pain, and purulent drainage** in the immediate postoperative period rather than gradual collapse after 6 months. - Prophylactic antibiotics are standard in rhinoplasty, but they do not compensate for the **mechanical failure** of the nasal framework caused by over-resection. *Keloid formation; preoperative steroid injection indicated* - **Keloids** are abnormal fibrous growths that result in excess tissue mass, not the **pinched appearance** or structural collapse observed in this patient. - Nasal tip surgery in patients with **thin skin** usually carries a higher risk of showing underlying **cartilage irregularities** rather than keloid-related breathing difficulties. *Normal healing process; no preventive strategy needed* - A **pinched nasal tip** and **breathing difficulty** resulting from nasal valve collapse are pathological outcomes and should never be considered part of the **normal healing process**. - Successful rhinoplasty requires a balance between aesthetic refinement and the preservation of the **nasal airway**; preventive structural strategies are standard of care in high-risk patients.
Question 9: A 40-year-old man with total nasal reconstruction using paramedian forehead flap develops partial flap necrosis at the tip on post-op day 5. Doppler shows absent flow in distal 1 cm. Previous history reveals he is a heavy smoker (20 cigarettes/day). What would be the best surgical strategy if this procedure were to be revised?
- A. Use a wider pedicle with earlier division at 2 weeks
- B. Perform two-stage delay procedure before flap transfer and continue smoking cessation (Correct Answer)
- C. Convert to free radial forearm flap with microsurgical anastomosis
- D. Use bilateral nasolabial flaps instead of forehead flap
Explanation: ***Perform two-stage delay procedure before flap transfer and continue smoking cessation*** - A **two-stage delay procedure** induces a **vascular delay phenomenon**, which enhances the flap's blood supply by stimulating **neovascularization** and compensatory metabolic changes before the final transfer. - In a **heavy smoker**, the microvasculature is compromised due to nicotine-induced vasoconstriction; therefore, **smoking cessation** combined with a delay provides the safest physiologic environment for flap survival. *Use a wider pedicle with earlier division at 2 weeks* - Increasing the **pedicle width** does not necessarily improve the perfusion to the distal flap tip if the underlying problem is **smoking-related microvascular disease**. - **Early division** at 2 weeks is contraindicated in high-risk patients as it may lead to total flap loss before sufficient **neovascularization** from the recipient site has occurred. *Convert to free radial forearm flap with microsurgical anastomosis* - While **free flaps** provide healthy tissue, they are technically more complex and still carry a high risk of **microvascular thrombosis** in active heavy smokers. - The **paramedian forehead flap** remains the **gold standard** for total nasal reconstruction due to its color and texture match; optimization is preferred over changing the entire technique. *Use bilateral nasolabial flaps instead of forehead flap* - **Bilateral nasolabial flaps** are typically insufficient for a **total nasal reconstruction**, as they lack the surface area and structural integrity required for large defects. - This approach avoids the forehead donor site but does not address the systemic **vascular compromise** caused by the patient's smoking history.
Question 10: A 28-year-old woman undergoes open rhinoplasty. On table, after osteotomies, significant asymmetry is noted with deviation of nasal bones to the right. Analysis reveals the right osteotomy is more lateral than the left. What is the best explanation for the persistent deviation?
- A. Postoperative edema causing temporary deviation
- B. Incomplete mobilization of nasal bones due to retained periosteum
- C. Asymmetric osteotomy created unequal bone segments (Correct Answer)
- D. Septal deviation pulling the dorsum to right
Explanation: ***Asymmetric osteotomy created unequal bone segments*** - Placing the **right lateral osteotomy** more laterally than the left results in a wider right **nasal bone segment**, preventing the pyramid from shifting into a midline position. - This geometric imbalance causes the **nasal dorsum** to remain deviated toward the side with the larger bone segment, necessitating **revision osteotomy** for symmetry. *Postoperative edema causing temporary deviation* - While **edema** can mask underlying symmetry, it does not explain significant intraoperative deviation immediately following **osteotomies**. - Intraoperative asymmetry is typically **structural** rather than a result of soft tissue swelling occurring at that moment. *Incomplete mobilization of nasal bones due to retained periosteum* - **Periosteal attachments** can resist movement, but the scenario specifically identifies a **technical error** in the placement of the osteotomy lines. - Even if mobilized, the **unequal width** of the segments would still cause a structural deviation rather than simple stiffness. *Septal deviation pulling the dorsum to right* - A **deviated septum** can certainly cause nasal deviation, but the analysis in this case specifically links the issue to the **asymmetric osteotomy** placement. - The **"open-roof"** or lateral bone segments effectively determine the dorsal position; fixing the septum won't correct the asymmetry of **unequal nasal bones**.
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