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Fitz-Hugh-Curtis syndrome lacking typical characteristics of pelvic inflammatory disease. A 23-year-old Japanese woman, previously a commercial sex worker, presented with a 2-day history of right upper quadrant (RUQ) abdominal pain, worse on deep inspiration. She had noticed increased vaginal discharge 2 months earlier and had developed dull, lower abdominal pain 3 weeks prior to presentation. Although pelvic examination and transvaginal ultrasonography revealed neither a tubal nor ovarian pathology, abdominal CT scan with contrast demonstrated early enhancement of the hepatic capsule, a finding pathognomonic for Fitz-Hugh-Curtis syndrome (FHCS). Cervical discharge PCR assay confirmed Chlamydia trachomatis infection. This case highlights that normal gynaecological evaluation may be insufficient to rule out FHCS, for which physicians should have a high index of suspicion when seeing any woman of reproductive age with RUQ pain.