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OG26.1-2,OG27.1-3 | Genital Trauma and Infections — PBL Case

CLINICAL SETTING

Priya, a 24-year-old married woman from a semi-urban background, presents to the outpatient gynaecology clinic with a 3-day history of lower abdominal pain, low-grade fever, and foul-smelling vaginal discharge. She has been married for 2 years and has been trying to conceive without success for 18 months. On directed history, she reports two prior episodes of similar pain and discharge over the past 18 months, each treated briefly with oral antibiotics at a local clinic, but she does not know the diagnosis or the antibiotics she received. Her menstrual cycle is irregular — she reports scanty periods over the past 8 months. She denies any history of tuberculosis in herself, but her father-in-law was treated for pulmonary tuberculosis 3 years ago. On examination: temperature 38.1°C, pulse 96/min, BP 110/72 mmHg. Abdomen: mild lower abdominal tenderness bilaterally. Speculum examination: mucopurulent cervical discharge; cervix slightly friable. Bimanual examination: cervical motion tenderness (positive), bilateral adnexal fullness and tenderness, uterus anteverted and normal-sized.

Trigger 1: Initial Assessment — Putting Together the Clinical Picture

The intern working up Priya lists the following problems: (1) lower abdominal pain + fever + mucopurulent discharge = likely pelvic infection; (2) 18 months of infertility; (3) irregular scanty periods for 8 months; (4) positive cervical motion tenderness; (5) household contact with pulmonary TB. She is unsure whether to treat for PID empirically or investigate further before prescribing.

DISCUSSION POINTS

  • Based on the CDC minimum diagnostic criteria, is the clinical threshold for empirical PID treatment met in Priya's case? What is the clinical rationale for the deliberately low threshold?
  • The intern is considering waiting for high vaginal swab and cervical culture results before prescribing antibiotics. What are the consequences of this delay in PID, and how does syndromic management address this problem?
  • What is the significance of Priya's two prior 'treated' PID episodes on her current presentation and her fertility prospects? How does cumulative PID affect tubal anatomy?
  • What combination of clinical features — irregular scanty periods, 18 months infertility, household TB contact — makes the intern consider a second diagnosis alongside PID?
Click to reveal Trigger 2: Investigations — The Dual Diagnosis Emerges (discuss previous trigger first!)

Trigger 2: Investigations — The Dual Diagnosis Emerges

The team starts empirical PID treatment (ceftriaxone 250 mg IM + doxycycline 100 mg BD + metronidazole 400 mg BD). Initial investigations: High vaginal swab — pus cells +++, no organisms on Gram stain; cervical swab NAAT — positive for Chlamydia trachomatis. Serum beta-hCG — negative. FBC: Hb 10.2 g/dL, WBC 11,200 cells/µL, ESR 78 mm/hr. Mantoux test: 18 mm induration. Chest X-ray: shows old calcified right hilar lymph node. Transvaginal ultrasound: uterus normal size with irregular endometrial echo; bilateral adnexal thickening, no discrete abscess.

DISCUSSION POINTS

  • The Chlamydia NAAT is positive. Does this change the empirical antibiotic regimen already started, or does it confirm the regimen is appropriate? Explain your reasoning.
  • The combination of positive Mantoux, calcified hilar node, elevated ESR, irregular endometrial echo, and bilateral adnexal thickening raises concern for genital tuberculosis. How does genital TB present differently from PID, and why is it called a 'great masquerader'?
  • The team decides to perform an endometrial curettage for histology and culture. What histological finding would confirm the diagnosis of genital TB? Why is the bacteriological yield from endometrial curettage in genital TB typically poor (paucibacillary disease)?
  • If the curettage histology shows caseating granulomas with Langhans giant cells, does Priya still need to complete her PID antibiotic course? Explain the overlap and distinction between treating the STI and the TB.
Click to reveal Trigger 3: Diagnosis Confirmed — Counselling Priya (discuss previous trigger first!)

Trigger 3: Diagnosis Confirmed — Counselling Priya

Endometrial curettage histology report: 'Endometrial tissue showing multiple caseating granulomas with Langhans-type giant cells, consistent with endometrial tuberculosis. No viable AFB on smear; culture pending.' The NAAT-positive chlamydial PID is treated and Priya completes 14 days of antibiotics with resolution of fever and pain. The team now must tell Priya she has genital tuberculosis and explain its implications for her fertility.

DISCUSSION POINTS

  • How would you explain to Priya the relationship between genital TB and her 18 months of infertility? What is the most common anatomical site of genital TB, and why does it cause infertility?
  • Priya asks: 'Doctor, if you give me TB treatment, will I be able to get pregnant?' What is the correct answer? What evidence should you use to counsel her about fertility outcomes after ATT?
  • Priya's husband is present and asks if he is at risk. How does genital TB spread — is sexual transmission a route? What should he be offered?
  • What is the standard ATT regimen for genital tuberculosis? Why is it the same regimen as pulmonary TB? What monitoring is required during treatment?
Click to reveal Trigger 4: Long-Term Sequelae and Prevention (discuss previous trigger first!)

Trigger 4: Long-Term Sequelae and Prevention

Six months after completing 6-month ATT, Priya returns. Her menstrual cycles remain scanty. Hysterosalpingography (HSG) shows bilateral tubal occlusion and a filling defect in the uterine cavity suggestive of intrauterine adhesions. She is referred for assisted reproduction counselling. Meanwhile, the team reviews the syndromic management charts for the community clinic and identifies that chlamydia is the most common STI detected in young women attending the clinic, and that partner treatment rates are very low.

DISCUSSION POINTS

  • Priya's HSG confirms bilateral tubal block and intrauterine adhesions. ATT was completed successfully. What options remain for her to achieve pregnancy? What are the likely outcomes of IVF in a patient with endometrial TB (Asherman syndrome)?
  • The intrauterine adhesions are eponymously termed. What is the eponym, and what are the clinical features that characterise this condition (menstrual change + infertility + recurrent miscarriage)?
  • Regarding the low partner treatment rates at the community clinic: what are the public health consequences of untreated chlamydia in male partners? How does syndromic management specifically address the partner?
  • Looking back over the whole case — what were the missed opportunities in the health system that could have prevented Priya's current outcome? Identify three specific public health or clinical interventions.
Click to reveal Trigger 5: Integration — Genital Infections as a Public Health Challenge (discuss previous trigger first!)

Trigger 5: Integration — Genital Infections as a Public Health Challenge

The team is preparing a case-based presentation for the departmental meeting. The case is to be titled 'The Double Jeopardy of STI and Genital TB in Young Indian Women.' They need to summarise the dual epidemiological burden, the diagnostic challenges, and the reproductive health consequences to educate junior colleagues.

DISCUSSION POINTS

  • How does India's dual burden of high STI prevalence (especially chlamydia/gonorrhoea) and high TB prevalence create a specific vulnerability for young women's reproductive health that is not seen in low-TB settings?
  • The NACO syndromic management algorithm uses clinical syndromes rather than pathogens. Summarise the three main STI syndromes (genital ulcer disease, vaginal/urethral discharge, inguinal bubo) and the corresponding first-line treatments in NACO guidelines.
  • A final-year student asks: 'How is genital TB prevented?' Construct a prevention framework at three levels: primary (preventing TB transmission), secondary (early detection of genital TB), and tertiary (reducing reproductive consequences once genital TB is established).
  • What role does the graduating doctor have in reducing the double burden of PID and genital TB — at the individual consultation level, at the community health level, and at the health-system advocacy level?

Group Task Assignments

  • Construct a comparative diagnostic table: PID vs Genital TB — clinical features, investigations, management, and prognosis.
  • Role-play the counselling session where Priya is told her fertility prognosis after genital TB. One student plays the doctor, one plays Priya, one plays the husband.
  • Map the pathogenesis of how a single episode of chlamydial PID, if untreated, can progress to tubal occlusion, infertility, and ectopic pregnancy — draw this as a causal chain diagram.
  • Identify the three main points in this case where a different clinical or public health decision could have altered Priya's outcome. Defend each choice.

Learning Issues

Research these questions and bring your findings to the discussion.

  1. [OG27.3] What are the CDC minimum diagnostic criteria for PID, and why is the threshold set deliberately low?
  2. [OG27.3] What is the correct inpatient antibiotic regimen for moderate-to-severe PID (CDC Regimen A and B)?
  3. [OG27.3] How does cumulative tubal damage from repeated PID episodes affect fertility risk quantitatively?
  4. [OG27.1] What are the NACO syndromic management algorithms for the three major STI syndromes in India?
  5. [OG27.2] Why is genital tuberculosis paucibacillary, and what is the sensitivity of each diagnostic test?
  6. [OG27.2] Does anti-tubercular therapy restore fertility in women with genital TB?
  7. [OG27.2] What is Asherman syndrome, and how does it arise as a complication of endometrial tuberculosis?