Sexual Offences and Abortion Practice Questions

Q: A 22-year-old woman alleges rape. Examination shows annular hymen with no tears but notch at 3 o'clock position extending to base. PSA positive vaginal swab, no spermatozoa seen. Which interpretation is MOST appropriate?

Congenital notch, recent intercourse confirmed. ***Congenital notch, recent intercourse confirmed*** - A **notch** at the 3 o'clock or 9 o'clock position in the hymen is typically considered a **congenital variation** resulting from embryological fusion rather than a traumatic tear. - The presence of **Prostate Specific Antigen (PSA)** on the vaginal swab is a highly specific marker for semen, confirming **recent sexual intercourse** even in the absence of spermatozoa. *Recent intercourse but virginity status indeterminate* - While PSA confirms recent intercourse, the description of a notch at 3 o'clock helps distinguish between **congenital** and traumatic findings, allowing for a more specific interpretation than "indeterminate." - Traumatic hymeneal tears in sexual assault usually occur in the **posterior segment** (between 4 and 8 o’clock), which are missing here. *Recent sexual intercourse confirmed, virgin before assault* - The absence of recent tears does not prove she was a **virgin** prior to the assault, as the hymen can be elastic or have a **congenital notch** independent of previous activity. - Medical examination can confirm signs of trauma or semen, but it cannot definitively certify the legal status of **virginity**. *Old healed tear, assault claim contradicted* - **Congenital notches** are frequently misidentified as old healed tears; however, tears typically heal by forming **cicatrix** or scar tissue and are rarely located at the 3 o'clock position. - The presence of PSA confirms recent sexual contact, which supports the physical possibility of the **assault claim** rather than contradicting it.

Q: A victim of alleged sexual assault presents 36 hours post-incident. Vaginal swab shows motile spermatozoa. Laboratory reports normal vaginal pH and absence of infection. Which factor BEST explains this finding?

Victim is in ovulatory phase of menstrual cycle. ***Victim is in ovulatory phase of menstrual cycle*** - Under normal vaginal conditions, **motile spermatozoa** typically disappear within 12 to 24 hours due to the acidic environment. - During the **ovulatory phase**, the **cervical mucus** is alkaline and abundant, providing a protective environment that can maintain sperm motility for up to **3–5 days**. *Contamination of sample during collection* - While forensic contamination can occur, it would lead to exogenous DNA or debris, but not explain the **sustained motility** of sperm in a biological timeframe inconsistent with normal physiology. - Proper forensic protocols involve **sterile techniques** that make such significant contamination an unlikely primary explanation for timed findings. *False positive result due to vegetable cells* - **Vegetable cells** or starch granules can sometimes be mistaken for sperm heads, but they never exhibit **motility**. - The observation of **active movement** is a definitive indicator of live spermatozoa and cannot be mimicked by plant-based artifacts. *Recent consensual intercourse unrelated to assault* - While recent intercourse could introduce sperm, the finding of **motile sperm at 36 hours** still requires a favorable physiological environment regardless of the source. - The question asks for the factor that **explains the finding** of motility at this specific duration, which is biochemically dependent on the **vaginal/cervical pH** related to the menstrual cycle.

Q: A 30-year-old male presents with alleged sodomy 12 hours ago. Which finding would be MOST consistent with recent anal penetration?

Fresh tears at 6 and 12 o'clock position with bleeding. ***Fresh tears at 6 and 12 o'clock position with bleeding*** - **Fresh tears** or fissures at the **6 and 12 o'clock positions** are the most characteristic acute findings in recent forceful anal penetration due to the relative lack of muscular support in these midlines. - These injuries, often accompanied by **active bleeding** or inflammation, are highly consistent with the **12-hour timeline** described in the case. *Dilated anal orifice with loss of sphincter tone* - This finding suggests **chronic sodomy** or repeated acts over a long period rather than a single recent event. - Acute penetration typically results in **reflex sphincter spasm** (anal tenesmus) as a protective reaction to pain, rather than immediate dilation. *Thickened perianal skin with loss of rugosity* - Loss of the normal **perianal rugae** (wrinkles) and thickening of the skin (lichenification) are features of **long-term habitual sodomy**. - These permanent structural changes occur due to frequent mechanical friction and do not manifest within **12 hours** of an incident. *Funneling of anus on spreading buttocks* - The **funnel-shaped** appearance of the anus is a classic sign of **chronic passive pederasty**, where the external sphincter loses its tone. - While important in forensic examination, it indicates **repeated past activity** and is not a specific marker for recent trauma.

Question 1

In a case of alleged child sexual abuse, a 12-year-old girl shows healed complete hymenal transection at 7 o'clock position reaching the base, normal anal examination, and negative biological evidence. Medical history reveals road traffic accident 6 months ago with perineal injury. Synthesize the BEST medicolegal opinion.

Accepted Answer

RTA-related straddle injury consistent with complete tear, sexual abuse not proven

Answer

Complete transection confirms penetrative sexual abuse regardless of history

Answer

Normal anal examination excludes any form of sexual abuse

Answer

Recent sexual abuse with complete healing, biological evidence degraded

Question 2

A forensic expert examines a 28-year-old alleged rape victim 72 hours post-incident. Vulval swab negative for spermatozoa and PSA, but high vaginal swab shows presence of sperm heads without tails. Internal examination shows old hymenal scars. Evaluate the MOST valid medicolegal conclusion.

Accepted Answer

Sexual assault occurred approximately 48-72 hours ago, victim not virgin

Answer

Contaminated sample, repeat examination required

Answer

No evidence of recent sexual intercourse, false allegation

Answer

Recent consensual intercourse, assault claim invalid

Question 3

A 22-year-old woman alleges rape. Examination shows annular hymen with no tears but notch at 3 o'clock position extending to base. PSA positive vaginal swab, no spermatozoa seen. Which interpretation is MOST appropriate?

Accepted Answer

Congenital notch, recent intercourse confirmed

Answer

Recent intercourse but virginity status indeterminate

Answer

Recent sexual intercourse confirmed, virgin before assault

Answer

Old healed tear, assault claim contradicted

Question 4

A victim of alleged sexual assault presents 36 hours post-incident. Vaginal swab shows motile spermatozoa. Laboratory reports normal vaginal pH and absence of infection. Which factor BEST explains this finding?

Accepted Answer

Victim is in ovulatory phase of menstrual cycle

Answer

Contamination of sample during collection

Answer

False positive result due to vegetable cells

Answer

Recent consensual intercourse unrelated to assault

Question 5

A 30-year-old male presents with alleged sodomy 12 hours ago. Which finding would be MOST consistent with recent anal penetration?

Accepted Answer

Fresh tears at 6 and 12 o'clock position with bleeding

Answer

Dilated anal orifice with loss of sphincter tone

Answer

Thickened perianal skin with loss of rugosity

Answer

Funneling of anus on spreading buttocks

Sexual Offences and Abortion — MCQs

Sexual Offences and Abortion — MCQs

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