Anorectal Malformations — MCQs
Oesophageal atresia may occur as part of the VACTERL group of anomalies. What does "TE" refer to in this context?
Esophageal atresia may occur as a part of VACTERL group of anomalies. What does 'TE' stand for?
Subpubic angle in females is
If a baby has a XX or XY genotype, normal internal gonads, but ambiguous external genitalia, it is called?
Which one of the following life-threatening congenital anomalies in the newborn presents with polyhydramnios, aspiration pneumonia, excessive salivation and difficulty in passing a nasogastric tube?
Shirodkar cerclage may be associated with all complications except:
Moschcowitz repair is done for:
What is the diagnosis based on the image shown?
What are the primary criteria for considering operative treatment in Hirschsprung's disease?
A 29-year-old male who is a doctor by profession, gives a history of prolonged sitting in his OPD hours and presents with discharge and pain. Clinical presentation of the patient is given in the image. What is the most likely diagnosis?
Anorectal Malformations Indian Medical PG Practice Questions and MCQs
Question 1: Oesophageal atresia may occur as part of the VACTERL group of anomalies. What does "TE" refer to in this context?
- A. Tetralogy of Fallot
- B. Thoracic empyema
- C. Tracheo-oesophageal fistula (Correct Answer)
- D. Talipes equinovarus
Explanation: ***Tracheo-oesophageal fistula*** - The acronym VACTERL stands for **V**ertebral defects, **A**nal atresia, **C**ardiac defects, **T**racheo-**E**sophageal fistula, **R**enal anomalies, and **L**imb defects. - Oesophageal atresia often coexists with a **tracheo-oesophageal fistula (TE)**, which explains the "TE" component in the VACTERL association. *Tetralogy of Fallot* - This is a type of **cardiac defect (C)**, which is covered by the "C" in VACTERL, not "TE." - It involves four specific heart abnormalities but doesn't directly relate to the **oesophageal or tracheal components**. *Thoracic empyema* - **Thoracic empyema** describes a collection of pus in the pleural space, usually due to infection, and is not a congenital anomaly. - It is an **acquired condition** and not part of the VACTERL association. *Talipes equinovarus* - This condition, also known as **clubfoot**, is a **limb defect (L)**. - While it is a recognized part of the VACTERL association, it specifically relates to the "L" and not the "TE."
Question 2: Esophageal atresia may occur as a part of VACTERL group of anomalies. What does 'TE' stand for?
- A. Tracheo-esophageal fistula (Correct Answer)
- B. Thoracic empyema
- C. Talipes equinovarus
- D. Tetralogy of Fallot
Explanation: ***Tracheo-esophageal fistula*** - The 'TE' in **VACTERL** stands for **Tracheo-Esophageal fistula**, which is a common congenital anomaly associated with esophageal atresia. - This condition involves an abnormal connection between the **trachea** and the esophagus, often leading to feeding difficulties and respiratory complications. *Thoracic empyema* - **Thoracic empyema** is an accumulation of pus in the pleural cavity, typically a complication of pneumonia or chest trauma. - It is an acquired condition and not a congenital anomaly part of the **VACTERL** association. *Talipes equinovarus* - **Talipes equinovarus**, also known as **clubfoot**, is a congenital deformity of the foot. - While it is a congenital anomaly, it is represented by the 'L' (Limb defects) in the **VACTERL** association, not 'TE'. *Tetralogy of Fallot* - **Tetralogy of Fallot** is a complex congenital heart defect involving four specific abnormalities. - This condition is represented by the 'C' (Cardiac defects) in the **VACTERL** association, as it's a type of cardiac anomaly.
Question 3: Subpubic angle in females is
- A. 120 degrees
- B. 180 degrees
- C. 70 degrees
- D. 90 degrees (Correct Answer)
Explanation: ***90 degrees*** - The **subpubic angle** in females typically ranges from **80-90 degrees**, making **90 degrees** the most accurate answer among the given options. - This wider angle is a distinguishing feature of the **female pelvis**, reflecting adaptations for childbirth and is significantly wider than the male angle (50-60 degrees). - Standard anatomy references cite the female subpubic angle as approximately **90 degrees** at the upper limit of normal. *120 degrees* - While the female pelvis has a wider angle than males, **120 degrees** exceeds the normal anatomical range. - This value is an overestimation and not representative of the typical female subpubic angle. *180 degrees* - A subpubic angle of **180 degrees** would imply a completely flat, straight line between the pubic rami, which is anatomically impossible. - This value does not represent any normal anatomical configuration in the human pelvis. *70 degrees* - An angle of **70 degrees** is characteristic of the **male subpubic angle**, which is narrower (typically 50-60 degrees, but can be up to 70 degrees). - This narrower angle is not conducive to childbirth and distinguishes the male from the female pelvis.
Question 4: If a baby has a XX or XY genotype, normal internal gonads, but ambiguous external genitalia, it is called?
- A. True hermaphrodite
- B. Disorder of Sex Development (DSD) (Correct Answer)
- C. Intersex (outdated term)
- D. Any of the above
- E. Pseudohermaphrodite
Explanation: ***Disorder of Sex Development (DSD)*** - This is the **current preferred medical terminology** that encompasses conditions where there is a discrepancy between chromosomal sex, gonadal sex, and anatomical sex. - The scenario described—normal XX or XY genotype and normal internal gonads with **ambiguous external genitalia**—fits the definition of a DSD. - This **umbrella term** has replaced older terminology and is the most appropriate answer in modern medical practice. *True hermaphrodite* - A true hermaphrodite, now referred to as **ovotesticular DSD**, possesses both ovarian and testicular tissue simultaneously. - The question specifies **normal internal gonads** (either ovaries or testes, not both), which excludes this diagnosis. *Intersex (outdated term)* - While "intersex" was historically used to describe individuals with atypical sexual characteristics, it is now considered an **outdated and less precise** term in medical contexts. - "Disorder of Sex Development" is the preferred and more comprehensive medical classification. *Pseudohermaphrodite* - This was the **classical medical term** for exactly this presentation: normal chromosomal sex and appropriate internal gonads but ambiguous external genitalia. - Examples include 46,XX DSD with virilization (e.g., **congenital adrenal hyperplasia**) or 46,XY DSD with undervirilization (e.g., **androgen insensitivity syndrome**). - This term has been **replaced by DSD terminology** in modern medical practice to avoid stigmatizing language. *Any of the above* - While multiple terms have been used historically, **DSD is the most accurate and currently accepted medical term** for this specific presentation. - Therefore, this option is incorrect as it suggests all answers are equally valid.
Question 5: Which one of the following life-threatening congenital anomalies in the newborn presents with polyhydramnios, aspiration pneumonia, excessive salivation and difficulty in passing a nasogastric tube?
- A. Choanal atresia
- B. Gastroschisis
- C. Diaphragmatic hernia
- D. Tracheo-esophageal fistula (Correct Answer)
Explanation: ***Tracheo-esophageal fistula*** - This condition presents with **polyhydramnios** due to the fetus being unable to swallow amniotic fluid, **excessive salivation** from accumulated secretions in the blind-ending esophageal pouch, and difficulty passing a **nasogastric tube** because of the esophageal obstruction. - **Aspiration pneumonia** is a common complication as saliva and gastric contents can be aspirated into the lungs through the fistula. *Choanal atresia* - Characterized by **blocked nasal passages**, leading to **cyclical cyanosis** relieved by crying, but not typically associated with polyhydramnios or excessive salivation in this manner. - While it can cause respiratory distress, it does not involve esophageal obstruction or directly cause aspiration pneumonia from swallowed fluids. *Gastroschisis* - This is an **abdominal wall defect** where intestines protrude outside the body, unrelated to swallowing difficulties, polyhydramnios caused by inability to swallow, or excessive salivation. - It does not involve difficulty in passing a nasogastric tube or directly cause aspiration pneumonia. *Diaphragmatic hernia* - Involves **abdominal contents herniating into the chest cavity**, leading to **pulmonary hypoplasia** and respiratory distress. - It does not explain polyhydramnios due to impaired swallowing, excessive salivation, or the characteristic inability to pass a nasogastric tube.
Question 6: Shirodkar cerclage may be associated with all complications except:
- A. Enterocele
- B. Ureteral injury
- C. Subacute intestinal obstructions
- D. Paresthesia over inner aspect (Correct Answer)
Explanation: ***Paresthesia over inner aspect*** - Paresthesia over the inner thigh is typically associated with injury to the **femoral nerve** or its branches, or the **obturator nerve**. - While surgery in the pelvic region always carries some nerve injury risk, a Shirodkar sling operation, which is a cervical cerclage, is **unlikely to directly cause paresthesia** in this specific distribution. *Enterocele* - An **enterocele** is a type of pelvic organ prolapse where the small bowel descends into the lower pelvic cavity, creating a bulge in the vagina. - The Shirodkar sling procedure involves placing a suture around the cervix, which can alter pelvic anatomy and potentially contribute to the development or worsening of an enterocele, by **changing pressure dynamics** or creating adhesion. *Ureteral injury* - The **ureters** pass close to the cervix as they course into the bladder, especially where the uterosacral ligaments attach. - During the placement of the Shirodkar cervical cerclage, there is a risk of **ligating or damaging the ureters** due to their proximity to the surgical field. *Subacute intestinal obstructions* - Any pelvic surgery, including a Shirodkar sling operation, carries a risk of **adhesion formation**. - These **post-surgical adhesions** can involve segments of the bowel, potentially leading to kinking or narrowing of the intestinal lumen, which can cause symptoms of subacute intestinal obstruction.
Question 7: Moschcowitz repair is done for:
- A. Vault prolapse
- B. Adenomyosis
- C. Enterocele (Correct Answer)
- D. Chronic inversion of uterus
Explanation: ***Enterocele*** - The **Moschcowitz repair** is a historical procedure designed to repair an **enterocele** by obliterating the cul-de-sac. - It involves placing a series of high **purse-string sutures** in the posterior cul-de-sac peritoneum to elevate it and prevent bowel herniation. *Vault prolapse* - Vault prolapse involves the **prolapse of the vaginal apex** after hysterectomy. - While it can coexist with an enterocele, the Moschcowitz repair specifically targets the **enterocele defect**, not the overall vault support. *Adenomyosis* - **Adenomyosis** is a condition where endometrial tissue grows into the muscular wall of the uterus. - It is managed medically or surgically via **hysterectomy**, and is unrelated to surgical repairs for pelvic organ prolapse. *Chronic inversion of uterus* - **Chronic uterine inversion** is a rare condition where the uterus turns inside out, typically following childbirth. - Management involves **manual or surgical repositioning of the uterus** and is unrelated to the Moschcowitz repair for enterocele.
Question 8: What is the diagnosis based on the image shown?
- A. Ileal diverticulum
- B. Urachal cyst
- C. Umbilical fistula (Correct Answer)
- D. Omphalocele
Explanation: ***Umbilical fistula*** - The image shows a **patent vitelline duct (omphalomesenteric duct)**, which creates a direct connection between the umbilicus and the ileum, visible as an umbilical fistula. - This condition presents with **fecal discharge from the umbilicus** or **umbilical prolapse of intestinal mucosa**. *Ileal diverticulum* - An ileal diverticulum, such as a **Meckel's diverticulum**, is a blind pouch protruding from the ileum, usually not communicating with the umbilicus. - It would typically be noted as an **outpouching of the ileal wall**, without an external opening at the umbilicus unless complicated by rupture. *Urachal cyst* - A urachal cyst is a remnant of the **urachus**, which connects the bladder to the umbilicus during fetal development. - It would be located **between the umbilicus and the bladder** and contain urine or serous fluid, not intestinal contents. *Omphalocele* - An omphalocele is a **congenital abdominal wall defect** where abdominal organs protrude into the base of the umbilical cord. - The defect is **covered by a membrane**, and it involves herniation of abdominal contents, not a fistula with the intestine.
Question 9: What are the primary criteria for considering operative treatment in Hirschsprung's disease?
- A. Has failed to respond to conservative treatment (Correct Answer)
- B. Is 2 years of age
- C. Has no distension of abdomen
- D. Is at least 8 kg in weight and thriving
Explanation: ***Has failed to respond to conservative treatment*** - Children with **Hirschsprung's disease** who do not respond to initial **conservative management**, such as bowel irrigation and laxatives, require surgical intervention to remove the aganglionic segment. - **Persistent symptoms** like severe constipation, abdominal distension, and failure to thrive despite medical therapy indicate the need for operative treatment. *Is 2 years of age* - Age itself is **not a primary criterion** for deciding operative treatment in Hirschsprung's disease; the decision is based on clinical presentation and response to treatment. - While many cases are diagnosed and treated surgically in infancy, some present later, and the timing of surgery depends on symptom severity and the child's overall condition. *Has no distension of abdomen* - The presence of **abdominal distension** is a common symptom in Hirschsprung's disease, and its absence would suggest **less severe disease** or effective conservative management, rather than an indication for surgery. - If a child has no distension, it implies that obstruction is not significant or is being managed, making operative intervention less urgent. *Is at least 8 kg in weight and thriving* - Being **at least 8 kg in weight and thriving** generally indicates a child is in good health and a suitable candidate for surgery, but these are **preconditions for safe surgery** rather than the primary criteria for deciding *if* surgery is needed. - The decision to operate is driven by the failure of conservative treatment and the persistence of disease-related symptoms, not solely by the child's weight or general thriving status.
Question 10: A 29-year-old male who is a doctor by profession, gives a history of prolonged sitting in his OPD hours and presents with discharge and pain. Clinical presentation of the patient is given in the image. What is the most likely diagnosis?
- A. Anal fissure
- B. Pilonidal sinus (Correct Answer)
- C. Anal fistula
- D. Sentinel pile
Explanation: ***Pilonidal sinus*** - The image shows a **pit** or **opening** in the **natal cleft** with surrounding inflammation and discharge, which is characteristic of a pilonidal sinus. - The history of **prolonged sitting** (*a doctor by profession has prolonged sitting hours in OPD*) and the patient's age (29-year-old male) are common risk factors for pilonidal disease. *Anal fissure* - An anal fissure is a **tear** in the **lining of the anal canal**, typically causing severe pain during and after defecation, and often bright red rectal bleeding. - The lesion in the image is located in the **natal cleft**, not within the anal canal, and presents as a sinus with discharge rather than a linear tear. *Anal fistula* - An anal fistula is an abnormal tunnel connecting the **anal canal to the skin outside** the anus, usually presenting as a small opening with intermittent or persistent discharge of pus or blood. - While it involves discharge, an **anal fistula** typically has an external opening closer to the anus, and the image clearly shows the lesion in the **sacrococcygeal region**, consistent with a pilonidal sinus. *Sentinel pile* - A sentinel pile is a **skin tag** that often accompanies a **chronic anal fissure**, located at the external edge of the fissure. - It is essentially excess skin and usually does not present with **discharge** or the characteristic **sinus tract** seen in the image.
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