Introduction

Diagnostic laparoscopy serves as the gold standard for confirming Fitz-Hugh-Curtis Syndrome (FHCS), a condition where pelvic infection ascends to cause inflammation of the liver capsule. While clinical presentation and non-invasive imaging provide initial clues, they lack specificity. Laparoscopy offers direct, real-time visualisation of the abdominal and pelvic cavities, enabling the identification of pathognomonic features that are unique to FHCS and allowing for concurrent therapeutic intervention.

Overview of Fitz-Hugh-Curtis Syndrome

Fitz-Hugh-Curtis Syndrome is defined as perihepatitis associated with pelvic inflammatory disease. It represents an extra-pelvic manifestation where infectious agents, most commonly Chlamydia trachomatis and Neisseria gonorrhoeae, incite an inflammatory response on the surfaces of the liver and the adjacent parietal peritoneum. The syndrome predominantly affects individuals of reproductive age and underscores the systemic potential of localised genital tract infections.

Pathophysiology

The development of FHCS follows the ascent of microorganisms from the lower genital tract. After establishing infection in the fallopian tubes (salpingitis), pathogens can disseminate to the upper abdomen via the paracolic gutters, peritoneal fluid, or lymphatic channels. This migration results in a localised fibrinous peritonitis on the diaphragmatic and anterior hepatic surfaces. The subsequent healing process, involving fibrin deposition and organisation, leads to the formation of the characteristic adhesions.

Clinical Presentation

Patients typically present with acute or subacute sharp, pleuritic pain in the right upper quadrant (RUQ) or right shoulder. This is frequently accompanied by symptoms of concurrent pelvic inflammatory disease, such as lower abdominal pain, cervical motion tenderness, and abnormal vaginal discharge. Fever and nausea may be present. The constellation of RUQ pain and pelvic symptoms is a key clinical indicator, though the absence of overt pelvic symptoms can complicate the presentation.

Role of Laparoscopy in Diagnosis

Laparoscopy is indicated when the diagnosis is uncertain based on clinical and imaging findings, or when a patient presents with acute abdominal pain of unknown aetiology. Its primary roles are:

1. Visual Confirmation: To directly identify the specific lesions of perihepatitis
2. Exclusion of Differential Diagnoses: To inspect the gallbladder, appendix, and other abdominal organs
3. Therapeutic Intervention: To perform adhesiolysis and obtain microbiological samples
4. Assessment of Pelvic Severity: To evaluate the extent of tubo-ovarian damage from PID

Characteristic Laparoscopic Findings

The laparoscopic appearance of FHCS is distinctive and is categorised by two primary findings:

1. "Violin-String" Adhesions: These are the hallmark features. They consist of delicate, avascular, fibrous bands stretching between the anterior surface of the liver (Glisson's capsule) and the parietal peritoneum of the anterior abdominal wall or the diaphragm. They are typically filmy, under tension, and resemble the strings of a musical instrument. Their presence is nearly pathognomonic for FHCS in the correct clinical context
2. Perihepatitis (Fitz-Hugh-Curtis Lesions): The liver capsule itself exhibits signs of acute inflammation. Findings range from erythema and oedema to a dense, sticky, fibrinous or purulent exudate coating the surface, sometimes described as a "frosted glass" or "velvet-like" appearance. In more chronic or healing stages, this may progress to more organised, cohesive adhesions

Concurrent Pelvic Findings: Laparoscopy almost invariably reveals signs of active or recent salpingitis. This includes tubal erythema, oedema, purulent exudate from the fimbriated ends (pyosalpinx), and pelvic adhesions. The presence of these pelvic findings is essential for linking the perihepatic inflammation to an ascending genital infection.

Differential Diagnosis

During laparoscopy, the surgeon must systematically exclude other causes of RUQ pain and perihepatitis. Key conditions to visually differentiate include:

• Biliary disease: Acute cholecystitis presents with a distended, erythematous gallbladder, potentially with necrosis or surrounding fluid
• Hepatitis: Viral or autoimmune hepatitis affects the liver parenchyma but typically spares the capsule; the liver may appear swollen but without the classic adhesions
• Perihepatitis of other aetiologies: Conditions like systemic lupus erythematosus (Libman-Sacks) or tuberculous peritonitis can cause perihepatic inflammation but present with different adhesive patterns and associated findings
• Referred pain from pneumonia/pleurisy: The diaphragm and upper abdominal organs appear normal

Management and Treatment

Laparoscopy is directly integrated into the management pathway:

1. Adhesiolysis: The thin "violin-string" adhesions are easily lysed using laparoscopic scissors or electrocautery. This procedure typically provides immediate and significant relief from the RUQ pain
2. Culture Acquisition: Peritoneal fluid and tubal exudate can be sampled for culture and nucleic acid amplification testing to guide targeted antimicrobial therapy
3. Medical Therapy: Empiric, broad-spectrum intravenous or oral antibiotics covering C. trachomatis and N. gonorrhoeae must be initiated immediately and adjusted based on results. A full course is mandatory to treat the underlying PID
4. Partner Management: Expedited partner therapy is required to break the cycle of reinfection

Prognosis

The immediate prognosis following laparoscopic adhesiolysis and antibiotic treatment is excellent, with rapid resolution of acute pain. The long-term prognosis, however, is intrinsically linked to the sequelae of the concomitant PID. Patients are at increased risk for chronic pelvic pain, tubal factor infertility, and ectopic pregnancy due to intra-pelvic adhesive disease and tubal damage. Therefore, a diagnosis of FHCS necessitates counselling and follow-up regarding reproductive health.

Summary

Laparoscopic findings provide the definitive visual diagnosis of Fitz-Hugh-Curtis Syndrome. The identification of "violin-string" adhesions between the liver and abdominal wall, coupled with evidence of perihepatitis and concurrent salpingitis, is unique and conclusive. This procedure transcends mere diagnosis, offering immediate therapeutic benefit through adhesiolysis and facilitating optimal medical management. Recognising these characteristic features is crucial for surgeons and clinicians to ensure prompt and accurate treatment, thereby alleviating acute symptoms and mitigating the long-term reproductive complications associated with severe pelvic inflammatory disease.