FMGE 2025 - Surgery Practice Questions

Q: Identify the pathology in the child.

Umbilical Hernia. ***Umbilical Hernia*** - This is a protrusion of abdominal contents through a weak spot at the **umbilicus** (belly button), which is clearly depicted in the image. It occurs due to the incomplete closure of the umbilical ring after birth. - Umbilical hernias are very common in infants, particularly those born prematurely, and most resolve spontaneously without intervention by the age of 4-5 years. *Spigelian Hernia* - A Spigelian hernia occurs through the **Spigelian fascia**, located at the lateral edge of the rectus abdominis muscle, typically below the umbilicus. The bulge in the image is midline, not lateral. - This type of hernia is rare, especially in the pediatric population, and presents as a palpable mass on the side of the lower abdomen. *Inguinal Hernia* - An inguinal hernia involves the protrusion of abdominal contents through the **inguinal canal**, resulting in a bulge in the groin or scrotum. The location in the image is the umbilicus, not the groin. - While common in children, inguinal hernias are anatomically distinct and are located inferior and lateral to the umbilicus. *Femoral Hernia* - A femoral hernia occurs through the **femoral canal**, presenting as a bulge in the upper thigh, just below the inguinal ligament. This location is significantly different from the periumbilical bulge shown. - These hernias are rare in children and are more commonly seen in adult females due to the wider pelvis.

Q: During an explosion, a patient sustains a crushed lower limb injury by collapse of a building. What type of blast injury does this represent?

Tertiary. ***Tertiary*** - **Tertiary blast injuries** occur when victims are thrown by the **blast wind** or when structures collapse onto them due to the explosion. - A crushed lower limb from a **building collapse** following an explosion is a classic example of tertiary blast injury mechanism. *Primary* - Primary blast injuries are caused by the direct effect of **blast wave overpressure** on the body. - They typically affect **gas-containing organs** like lungs and ears, causing **blast lung** or **tympanic membrane rupture**, not crush injuries. *Secondary* - Secondary blast injuries result from being struck by **flying debris or fragments** (shrapnel) propelled by the explosion. - This mechanism causes **penetrating trauma** from projectiles, not crush injuries from structural collapse. *Quaternary* - Quaternary blast injuries include **burns**, **toxic inhalation**, and **exacerbation of pre-existing medical conditions**. - This category does not include **structural collapse injuries**, which are classified as tertiary mechanisms.

Q: In the given image, which vein is mainly affected?

Great saphenous vein. ***Great saphenous vein*** - The image displays prominent varicose veins along the **medial aspect of the leg**, which corresponds to the anatomical path of the **great saphenous vein (GSV)**. - The GSV is the most frequently affected vein in varicose vein disease due to valvular incompetence, leading to venous reflux and the characteristic tortuous dilatation seen in the picture. *Short saphenous vein* - The **short saphenous vein (SSV)** ascends along the **posterior aspect of the calf**. Varicosities primarily from the SSV would be most visible on the back of the leg. - While some posterior varicosities may be present, the predominant involvement shown is medial, making the GSV the main affected vessel. *Femoral vein* - The **femoral vein** is a major vessel of the **deep venous system**, not the superficial system. - Varicose veins are a disease of **superficial veins**; deep veins like the femoral vein do not become varicose. *Perforator veins* - **Perforator veins** connect the superficial venous system to the deep system. Their incompetence is a crucial factor in the development of venous hypertension and varicosities. - However, the large, dilated vessels visible on the skin are part of a major superficial trunk (the GSV in this case), not the perforators themselves, which are much smaller connecting vessels.

Q: After the parotidectomy operation, a patient presents with excessive sweating and redness over the parotid region. What is the diagnosis?

Frey’s Syndrome. ***Frey’s Syndrome***- It is a common post-parotidectomy complication resulting from **aberrant regeneration** of the severed **auriculotemporal nerve**.- The parasympathetic secretomotor fibers meant for the parotid gland mistakenly reinnervate the overlying cutaneous sweat glands and blood vessels, causing **gustatory sweating** and **flushing (redness)** in the parotid region upon chewing or eating.*Horner’s syndrome*- This syndrome results from interruption of the **cervical sympathetic trunk** and presents with the classic triad of **ptosis** (droopy eyelid), **miosis** (constricted pupil), and **anhidrosis** (lack of sweating) on the affected side of the face.- It is unrelated to the auriculotemporal nerve damage common after parotidectomy and involves *lack* of sweating, contrary to the patient's complaint of *excessive* sweating.*Bell’s Palsy*- This is an **idiopathic acute peripheral facial nerve palsy**, leading to unilateral weakness or paralysis of the muscles of facial expression (e.g., inability to close the eye or raise the eyebrow).- While the facial nerve (CN VII) is at risk during parotidectomy, Bell's Palsy itself does not account for the specific symptoms of post-operative gustatory sweating and redness.*Glossopharyngeal neuralgia*- This condition involves brief, severe episodes of stabbing pain in the throat, tonsillar area, back of the tongue, or ear due to irritation of the **glossopharyngeal nerve (CN IX)**.- It is a disorder characterized purely by pain, often triggered by **swallowing** or **talking**, and is not associated with post-operative salivary gland complication symptoms like gustatory sweating.

Q: A professional singer presents with difficulty in raising the pitch of her voice following thyroid surgery. There is no hoarseness, but high-pitched voice production is impaired. Which nerve is most likely injured?

External branch of the superior laryngeal nerve (EBSLN). ***Correct: External branch of the superior laryngeal nerve (EBSLN)*** - The EBSLN innervates the **cricothyroid muscle**, which is responsible for increasing **vocal cord tension** - Injury results in inability to tense the vocal cords, causing **loss of high-pitched voice** production - Crucially, there is **NO hoarseness** because vocal cord adduction (brought together by other muscles) remains intact - Classic presentation: Professional singers or teachers notice difficulty hitting high notes after thyroid surgery *Incorrect: Recurrent laryngeal nerve (RLN)* - RLN innervates all intrinsic laryngeal muscles **except** the cricothyroid - Injury causes **hoarseness** due to impaired vocal cord adduction - This patient has no hoarseness, making RLN injury unlikely *Incorrect: Internal branch of the superior laryngeal nerve (IBSLN)* - IBSLN is purely **sensory** to the supraglottic larynx - Injury causes loss of sensation above the vocal cords, leading to **aspiration risk** - Does not affect voice pitch or motor function *Incorrect: Glossopharyngeal nerve* - Provides motor innervation to stylopharyngeus and sensory to pharynx/posterior tongue - **Not involved in laryngeal function** or voice production - Injury would cause dysphagia and loss of gag reflex, not voice changes

Question 1

Identify the pathology in the child.

Accepted Answer

Umbilical Hernia

Answer

Inguinal Hernia

Answer

Femoral Hernia

Answer

Spigelian Hernia

Question 2

During an explosion, a patient sustains a crushed lower limb injury by collapse of a building. What type of blast injury does this represent?

Accepted Answer

Tertiary

Answer

Primary

Answer

Quaternary

Answer

Secondary

Question 3

In the given image, which vein is mainly affected?

Accepted Answer

Great saphenous vein

Answer

Perforator veins

Answer

Femoral vein

Answer

Short saphenous vein

Question 4

After the parotidectomy operation, a patient presents with excessive sweating and redness over the parotid region. What is the diagnosis?

Accepted Answer

Frey’s Syndrome

Answer

Bell’s Palsy

Answer

Glossopharyngeal neuralgia

Answer

Horner’s syndrome

Question 5

A professional singer presents with difficulty in raising the pitch of her voice following thyroid surgery. There is no hoarseness, but high-pitched voice production is impaired. Which nerve is most likely injured?

Accepted Answer

External branch of the superior laryngeal nerve (EBSLN)

Answer

Glossopharyngeal nerve

Answer

Internal branch of the superior laryngeal nerve (IBSLN)

Answer

Recurrent laryngeal nerve (RLN)

FMGE 2025 — Surgery