O&G · Gynaecological health — upper genital tract infection
Pelvic inflammatory disease & tubo-ovarian abscess — CDC 2021 management at fellowship depth
Also known as PID · Pelvic inflammatory disease · Salpingitis · Tubo-ovarian abscess · TOA · Fitz-Hugh-Curtis syndrome · Perihepatitis · Tubal factor infertility
Exam-exhaustive FRANZCOG fellowship topic on pelvic inflammatory disease (PID) and tubo-ovarian abscess (TOA), extending the existing MBBS PID leaf to fellowship depth. Reproduces the CDC 2021 minimum and specificity-increasing diagnostic criteria and the outpatient (ceftriaxone 500 mg IM + doxycycline 100 mg BD + metronidazole 500 mg BD, both 14 days) and parenteral regimens verbatim; the admission criteria; the TOA drainage-versus-conservative decision with size and inflammatory predictors (TOAST and Fouks data); the Fitz-Hugh-Curtis syndrome; and the Westrom data on tubal-factor infertility, ectopic pregnancy and chronic pelvic pain by episode number and severity. Cross-links the MBBS PID topic without duplicating it.
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Target exams
Red flags
- Empirically treat PID on any ONE of cervical motion, uterine or adnexal tenderness in a sexually active at-risk woman once other causes are excluded — do not wait for swab results, because delay scars tubes
- A tubo-ovarian abscess can rupture — producing acute peritonitis and septic shock; a third of medically-managed TOAs need surgical or radiological intervention
- Right upper quadrant pleuritic pain with normal liver enzymes in suspected PID is Fitz-Hugh-Curtis perihepatitis
- Pregnant, severe illness, vomiting, a TOA, or failure of oral therapy — admit for parenteral antibiotics
- The first PID episode carries about a 12% tubal-factor infertility risk; each further episode multiplies it — treat partners and retest at 3 months
A 21-year-old presents with a week of bilateral pelvic pain, a discharge and dyspareunia. Your decision in the next ten minutes decides whether she carries a 1% or a 50% chance of tubal-factor infertility. The trap is not the diagnosis — it is the delay. PID scars tubes hour by hour, and the majority of tubal damage happens in women who never had a recognised acute episode. Treat on minimum criteria, the same visit.[1][4]
Overview and definition
PID is a spectrum — the CDC's verbatim framing — of inflammatory disorders of the upper female genital tract, "including any combination of endometritis, salpingitis, tubo-ovarian abscess, and pelvic peritonitis".[1]
The upper tract is normally sterile, defended by the cervical mucus plug, secretory IgA and a Lactobacillus-dominated acidic vagina. PID is a breach of that barrier: a sexually transmitted pathogen plus opportunistic vaginal organisms traverse the cervix and establish infection in tissue that is normally defended. The skill is in three judgement calls:[1][10]
- Recognise the atypical and silent case — two-thirds of women with tubal-factor infertility give no history of an acute episode.[4][10]
- Treat empirically and immediately on minimum criteria, before NAAT results return — because delay increases tubal scarring.[1]
- Distinguish PID from its surgical mimics (ectopic, appendicitis, torsion, ruptured TOA) and decide who needs admission.[1][10]
This fellowship page extends the MBBS PID topic (cross-linked under related); the foundational definitions, organisms and outpatient regimen are covered there. Here we go deeper on the CDC 2021 evidence, the tubo-ovarian abscess decision, Fitz-Hugh-Curtis, and the Weström sequelae data — the fellowship-level corners the examiner probes.[1]
References11ShowHide
- [1]Workowski KA, Bachmann LH, Chan PA, et al. Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR Recomm Rep, 2021.PMID 34292926
- [2]Ross J, Guaschino S, Cusini M, Jensen J 2017 European guideline for the management of pelvic inflammatory disease. Int J STD AIDS, 2018.PMID 29198181
- [3]Ness RB, Soper DE, Holley RL, Peipert J, Randall H, Sweet RL, Sondheimer SJ, Hendrix SL, Amortegui A, Trucco G, et al. Effectiveness of inpatient and outpatient treatment strategies for women with pelvic inflammatory disease: results from the Pelvic Inflammatory Disease Evaluation and Clinical Health (PEACH) Randomized Trial. Am J Obstet Gynecol, 2002.PMID 12015517
- [4]Weström LV Sexually transmitted diseases and infertility. Sex Transm Dis, 1994.PMID 8042113
- [5]Westrom L Effect of pelvic inflammatory disease on fertility. Venereology, 1995.PMID 12291198
- [6]Marshall A, Wimsett J, Handforth C, Unsworth L, Wilson J, Van Der Merwe AM, Oyston C The Tubo-ovarian abscess study (TOAST): A single-center retrospective review of predictors of failed medical management. Int J Gynaecol Obstet, 2025.PMID 40162547
- [7]Fouks Y, Cohen A, Shapira U, Solomon N, Almog B, Levin I Surgical Intervention in Patients with Tubo-Ovarian Abscess: Clinical Predictors and a Simple Risk Score. J Minim Invasive Gynecol, 2019.PMID 29966713
- [8]Baer A, Lia M, Weisgerber C, Aktas B, Wolf B Predicting the Need for Surgery in Tubo-Ovarian Abscess: A Clinical Evaluation and External Validation of Risk Scores. J Minim Invasive Gynecol, 2026.PMID 41845991
- [9]Sánchez-Oro R, Jara-Díaz AM, Martínez-Sanz G Fitz-Hugh-Curtis syndrome: A cause of right upper quadrant abdominal pain. Med Clin (Barc), 2020.PMID 32145988
- [10]Curry A, Williams T, Penny ML Pelvic Inflammatory Disease: Diagnosis, Management, and Prevention. Am Fam Physician, 2019.PMID 31524362
- [11]Coremans L, de Clerck F Fitz-Hugh-Curtis syndrome associated with tuberculous salpingitis and peritonitis: a case presentation and review of the literature. BMC Gastroenterol, 2018.PMID 29558895