General Surgery Principles Practice Questions

Q: The term "universal tumor" refers to which of the following?

Lipoma. **Explanation:** **Lipoma** is termed the **"universal tumor"** because it is the most common benign mesenchymal tumor and can occur in almost any part of the body where fat is present. It is most frequently found in the subcutaneous tissues of the trunk, neck, and proximal extremities, but it can also occur in internal organs (e.g., gastrointestinal tract, heart, or brain). **Why the other options are incorrect:** * **Adenoma:** This is a benign tumor of glandular origin (e.g., pleomorphic adenoma of the parotid). It is tissue-specific and not "universal." * **Papilloma:** This is a benign epithelial tumor growing exophytically (outward) in nipple-like projections. It is common in the skin, bladder, or breast ducts but lacks the ubiquitous distribution of lipomas. * **Fibroma:** While common, these are benign tumors of connective tissue that are less frequent than lipomas and do not carry the specific clinical moniker of "universal tumor." **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Sign:** Lipomas are typically soft, painless, mobile, and possess a characteristic **"slip sign"** (the tumor slips away from the finger on palpation). * **Dercum’s Disease (Adiposis Dolorosa):** A rare condition characterized by multiple painful lipomas, usually in postmenopausal women. * **Madelung’s Disease:** Symmetric lipomatosis involving the neck, head, and upper trunk, often associated with chronic alcoholism. * **Histology:** They are composed of mature adipocytes and are usually enclosed within a delicate capsule. * **Treatment:** Most are asymptomatic and require no treatment. If symptomatic or for cosmetic reasons, surgical excision or liposuction is performed.

Q: What is the most common clinical presentation of basal cell carcinoma?

Nodular. **Explanation:** **Basal Cell Carcinoma (BCC)** is the most common skin cancer worldwide, arising from the non-keratinizing cells of the basal layer of the epidermis. **1. Why Nodular is Correct:** The **Nodular variant** is the most common clinical subtype, accounting for approximately 60–80% of all BCC cases. It typically presents as a slow-growing, "pearly" or translucent papule or nodule with overlying telangiectasia (dilated blood vessels) and rolled-out borders. As it grows, the center often undergoes necrosis, leading to a central ulceration—a classic presentation known as a **"Rodent Ulcer."** It is most frequently found on sun-exposed areas, particularly the face (above the line joining the lobe of the ear to the angle of the mouth). **2. Why Other Options are Incorrect:** * **Morpheaform (Sclerosing):** This is an aggressive, infiltrative variant that looks like a flat, waxy scar or plaque. It is less common but clinically significant due to its indistinct margins. * **Superficial:** The second most common type, often appearing as a red, scaly patch. It is typically found on the trunk and limbs rather than the face. * **Keratotic:** Also known as Basosquamous carcinoma, this is a rare subtype that shares features of both BCC and Squamous Cell Carcinoma; it is more aggressive and prone to metastasis. **Clinical Pearls for NEET-PG:** * **Risk Factor:** Chronic UV light exposure (UVB) is the primary trigger. * **Metastasis:** BCC is locally invasive but **rarely metastasizes** (unlike Squamous Cell Carcinoma). * **Gold Standard Diagnosis:** Incisional or punch biopsy. * **Treatment of Choice:** Surgical excision with safe margins. For high-risk areas (face), **Mohs Micrographic Surgery** offers the highest cure rate. * **Inherited Syndrome:** Gorlin Syndrome (Basal Cell Nevus Syndrome) is associated with multiple BCCs at a young age.

Q: What is the instrument shown below?

Tracheal dilator. ***Tracheal dilator*** - This is **Trousseau's dilator**, characterized by its distinctive **two curved spreading arms** that open the tracheal opening during emergency procedures. - Specifically designed for **tracheostomy procedures** to maintain airway patency and facilitate tube insertion. *Urethral dilator* - **Hegar's dilators** or **metal bougies** are typically straight, graduated instruments used for urethral stricture management. - They have a **smooth, tapered design** without the characteristic spreading arms seen in this instrument. *Aneurysm needle* - **Aneurysm needles** are thin, curved instruments with a **blunt tip** used for passing ligatures around blood vessels. - They have a **needle-like appearance** with an eye for threading sutures, completely different from this spreading instrument.

Q: Non-blanchable erythema of the skin is classified as which stage of a decubitus ulcer?

Stage I. **Explanation:** Decubitus ulcers (pressure sores) are staged based on the depth of tissue involvement according to the National Pressure Ulcer Advisory Panel (NPUAP) guidelines. **1. Why Stage I is correct:** **Stage I** is characterized by **non-blanchable erythema** of intact skin. This means that when pressure is applied to the reddened area, it does not turn white (blanch), indicating that microvascular damage has occurred but the skin barrier remains intact. It is the earliest clinically recognizable stage of a pressure ulcer. **2. Why other options are incorrect:** * **Stage II:** Involves **partial-thickness skin loss** involving the epidermis, dermis, or both. It clinically presents as a shallow open ulcer with a red-pink wound bed or as an intact/ruptured serum-filled blister. * **Stage III:** Involves **full-thickness skin loss**. Subcutaneous fat may be visible, but bone, tendon, or muscle are NOT exposed. Slough may be present. * **Stage IV:** Involves **full-thickness tissue loss** with exposed bone, tendon, or muscle. Osteomyelitis is a common complication at this stage. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** The **Sacrum** is the most common site overall, followed by the ischial tuberosity and greater trochanter. * **Unstageable Ulcer:** If the wound bed is covered by slough or eschar such that the true depth cannot be determined, it is classified as "Unstageable." * **Deep Tissue Injury (DTI):** Presents as a purple or maroon localized area of discolored intact skin or a blood-filled blister due to damage of underlying soft tissue. * **Prevention:** The most effective preventive measure is frequent repositioning (every 2 hours).

Q: Odontoma is treated by:

Excision. **Explanation:** **Odontomas** are the most common odontogenic tumors. They are technically considered **hamartomas** (developmental malformations of dental tissues) rather than true neoplasms. They consist of enamel, dentin, cementum, and pulp tissue. 1. **Why Excision is Correct:** Odontomas are typically well-encapsulated and separated from the surrounding bone by a thin layer of fibrous connective tissue. Because they are benign, slow-growing, and non-invasive, **simple surgical excision (enucleation)** is the definitive treatment. Once the lesion and its surrounding capsule are removed, the recurrence rate is nearly zero. 2. **Why Incorrect Options are Wrong:** * **Resection:** This involves removing the lesion along with a margin of healthy bone (e.g., segmental resection). This is unnecessarily aggressive for a benign, encapsulated hamartoma like an odontoma and is reserved for aggressive or malignant tumors (e.g., Ameloblastoma). * **Curettage:** While similar to excision, pure curettage (scraping) without removing the entire capsule may lead to incomplete removal of dental fragments. Excision/Enucleation is the standard term for removing the mass in its entirety. * **Radiotherapy:** Odontomas are radioresistant. Radiation is contraindicated for benign dental lesions due to the risk of osteoradionecrosis and secondary malignancies. **NEET-PG High-Yield Pearls:** * **Types:** * **Compound Odontoma:** Multiple small tooth-like structures (denticles); most common in the **anterior maxilla**. * **Complex Odontoma:** An amorphous mass of dental tissue; most common in the **posterior mandible**. * **Radiographic Appearance:** A radiopaque mass surrounded by a narrow **radiolucent halo** (the capsule). * **Clinical Presentation:** Often associated with a **retained deciduous tooth** or an **unerupted permanent tooth**.

Q: Which of the following suture materials is absorbable?

Polyglactine. **Explanation:** Suture materials are broadly classified into **absorbable** (broken down by the body via hydrolysis or enzymatic digestion) and **non-absorbable** (remain permanently or require manual removal). **Correct Answer: A. Polyglactine** Polyglactine 910 (commonly known by the brand name **Vicryl**) is a synthetic, braided, multifilament **absorbable** suture. It is composed of a copolymer of glycolide and lactide. It is degraded by **hydrolysis**, maintaining significant tensile strength for approximately 3–4 weeks and being completely absorbed within 60–90 days. It is widely used for soft tissue approximation and ligation. **Analysis of Incorrect Options:** * **B. Polypropylene (Prolene):** A synthetic, monofilament **non-absorbable** suture. It has the lowest rates of infection and is the material of choice for vascular anastomoses and skin closure (subcuticular). * **C. Polyethylene:** A synthetic **non-absorbable** suture often used in orthopedic surgeries (e.g., tendon repairs) due to its high tensile strength. * **D. Polybutester (Novafil):** A synthetic **non-absorbable** monofilament suture known for its high elasticity, making it ideal for wound closure where significant edema is expected. **High-Yield Clinical Pearls for NEET-PG:** * **Natural Absorbable:** Catgut (derived from bovine/ovine submucosa). Note: Chromic catgut is treated with chromium salts to delay absorption. * **Fastest Absorbing:** Catgut (5–7 days); **Slowest Absorbing Synthetic:** Polydioxanone (PDS), which takes about 180–210 days. * **Suture of choice for Biliary/Urinary tracts:** Absorbable sutures (to prevent them from acting as a nidus for stone formation). * **Suture of choice for contaminated wounds:** Monofilament (to prevent "wicking" of bacteria seen in braided sutures).

Q: Using monopolar cautery during circumcision in children is not advised due to the risk of penile coagulation. What is the mechanism behind this phenomenon?

Channeling. **Explanation:** The correct answer is **Channeling (Option A)**. In monopolar cautery, the electrical current travels from the active electrode, through the patient’s body, to a return plate (grounding pad). When used on a narrow, terminal appendage like the penis—especially in children—the current becomes concentrated as it travels through the narrow base of the organ. This "channeling" effect leads to high current density, causing unintended thermal injury, thrombosis of the dorsal penile arteries, and subsequent total penile necrosis or gangrene. For this reason, bipolar cautery or cold dissection is preferred for circumcision. **Analysis of Incorrect Options:** * **B. Capacitance Coupling:** This occurs when current is transferred from an active electrode through intact insulation into adjacent non-target tissues (common in laparoscopy). It is not the primary mechanism of injury in circumcision. * **C. Electrocution:** This refers to a fatal or severe electric shock caused by current passing through the heart or brain, rather than localized tissue coagulation. * **D. Explosion:** This is a risk when cautery is used in the presence of flammable gases (e.g., bowel gas containing methane/hydrogen or alcohol-based skin preps), but it does not describe the mechanism of penile necrosis. **High-Yield Clinical Pearls for NEET-PG:** * **Bipolar Cautery:** Safer for terminal appendages because the current only flows between the two tips of the forceps, eliminating the channeling effect. * **Pacemakers:** Monopolar cautery can interfere with pacemakers; always use bipolar or place the grounding pad far from the heart. * **Direct Coupling:** Occurs when the active electrode accidentally touches another conductive instrument (e.g., a laparoscope), causing injury at a distant site.

Q: What is the name of the retractor shown in the image?

Deaver retractor. ***Deaver retractor*** - Features a **large curved flat blade** with a **right-angle handle**, making it ideal for retracting heavy organs like the liver during abdominal surgery. - Commonly used in **laparotomy** procedures to provide excellent exposure of deep abdominal structures. *Richardson retractor* - Has a **straight blade** with a curved handle, unlike the distinctive right-angle configuration of the Deaver. - Primarily used for **superficial tissue retraction** rather than deep organ manipulation. *Malleable retractor* - Made of **flexible metal** that can be bent and shaped according to surgical needs during the procedure. - Lacks the **rigid curved blade** and fixed right-angle handle characteristic of the Deaver retractor. *Goulet retractor* - Features **multiple prongs** or **teeth** for grasping tissue, completely different from the smooth blade design. - Used for **tissue grasping** rather than the broad retraction provided by flat-bladed retractors.

Q: What is the most common type of cyst found in the spleen?

Pseudocyst. **Explanation:** Splenic cysts are broadly classified into **Primary (True) cysts**, which possess an epithelial lining, and **Secondary (False) cysts**, which lack one. **Why Pseudocyst is correct:** Pseudocysts (Secondary cysts) are the **most common** type of splenic cyst, accounting for approximately **75-80%** of all non-parasitic splenic cysts. They typically develop as a late complication of **trauma** (post-traumatic), though they can also result from splenic infarction or infection. Because they lack a cellular lining and are composed of fibrous tissue, they are termed "pseudocysts." **Analysis of Incorrect Options:** * **Hydatid Cyst (Option A):** Caused by *Echinococcus granulosus*, this is the most common **parasitic** cyst of the spleen. While common in endemic areas, it is less frequent globally than post-traumatic pseudocysts. * **Dermoid Cyst (Option B):** These are extremely rare primary (true) cysts of the spleen. They are congenital and contain skin appendages. * **Lymphangioma (Option C):** This is a benign malformation of the lymphatic system. While it is the most common **primary benign neoplasm** of the spleen that can appear cystic, it is not the most common splenic cyst overall. **High-Yield Clinical Pearls for NEET-PG:** * **True Cysts:** Most common is the **Epidermoid cyst** (congenital, possesses epithelial lining, often positive for CEA or CA 125). * **Imaging:** Ultrasound is the first-line investigation; CT is used for surgical planning. * **Management:** Small, asymptomatic cysts (<5 cm) are managed conservatively. Large or symptomatic cysts require **Spleen-preserving surgery** (e.g., partial splenectomy or cyst decortication) to avoid Post-Splenectomy Overwhelming Infection (OPSI).

Q: Marjolin's ulcer is a:

Malignant ulcer found on the scar of a burn. **Explanation:** **Marjolin’s ulcer** refers to a squamous cell carcinoma (SCC) that arises in areas of chronic inflammation, long-standing scars, or non-healing wounds. The most classic and high-yield association is with **post-burn scars** (cicatrix). 1. **Why Option A is correct:** Chronic irritation and poor lymphatic drainage in a dense burn scar lead to repeated tissue breakdown and repair. Over a long latent period (average 25–30 years), this cellular stress triggers malignant transformation, typically into a well-differentiated squamous cell carcinoma. 2. **Why other options are incorrect:** * **Option B:** While SCC can occur in chronic osteomyelitis sinuses or diabetic foot ulcers, the specific eponym "Marjolin’s" is most strictly tied to scar-based malignancy. * **Option C:** A **Trophic ulcer** (Punched-out ulcer) is a neurotrophic ulcer caused by pressure in a denervated area (e.g., Leprosy or Diabetes), not a malignancy. * **Option D:** **Meleney’s gangrene** is a synergistic bacterial gangrene of the abdominal wall, usually following surgery; it is an infective process, not neoplastic. **Clinical Pearls for NEET-PG:** * **Most common histological type:** Squamous Cell Carcinoma (SCC). * **Characteristics:** It is typically **painless** (as the scar lacks sensory nerves), has everted edges, and is **slow to metastasize** because the dense scar tissue limits lymphatic spread. However, once it spreads, the prognosis is poor. * **Management:** Wide local excision (2 cm margin) is the treatment of choice. * **Latent Period:** Can be "Acute" (within 1 year) or "Chronic" (most common).

Question 1

The term "universal tumor" refers to which of the following?

Accepted Answer

Lipoma

Answer

Adenoma

Answer

Papilloma

Answer

Fibroma

Question 2

What is the most common clinical presentation of basal cell carcinoma?

Accepted Answer

Nodular

Answer

Morpheaform

Answer

Superficial

Answer

Keratotic

Question 3

What is the instrument shown below?

Accepted Answer

Tracheal dilator

Answer

Urethral dilator

Answer

Aneurysm needle

Question 4

Non-blanchable erythema of the skin is classified as which stage of a decubitus ulcer?

Accepted Answer

Stage I

Answer

Stage II

Answer

Stage III

Answer

Stage IV

Question 5

Odontoma is treated by:

Accepted Answer

Excision

Answer

Resection

Answer

Curettage

Answer

Radiotherapy

Question 6

Which of the following suture materials is absorbable?

Accepted Answer

Polyglactine

Answer

Polypropylene

Answer

Polyethylene

Answer

Polybutester

Question 7

Using monopolar cautery during circumcision in children is not advised due to the risk of penile coagulation. What is the mechanism behind this phenomenon?

Accepted Answer

Channeling

Answer

Capacitance coupling

Answer

Electrocution

Answer

Explosion

Question 8

What is the name of the retractor shown in the image?

Accepted Answer

Deaver retractor

Answer

Richardson retractor

Answer

Malleable retractor

Answer

Goulet retractor

Question 9

What is the most common type of cyst found in the spleen?

Accepted Answer

Pseudocyst

Answer

Hydatid cyst

Answer

Dermoid cyst

Answer

Lymphangioma

Question 10

Marjolin's ulcer is a:

Accepted Answer

Malignant ulcer found on the scar of a burn

Answer

Malignant ulcer found on an infected foot

Answer

Trophic ulcer

Answer

Meleney's gangrene

General Surgery Principles — MCQs

General Surgery Principles — MCQs

On this page

Practice by Chapter

Want unlimited practice?