Rare Roman Bladder Stone Surgery Tool Discovered at Ancient Bulgarian City
Archaeologists excavating the ancient Roman city of Heraclea Sintica in southwestern Bulgaria have uncovered an exceptionally rare surgical instrument used to remove bladder stones, providing remarkable new evidence of the sophistication of Roman medicine nearly 1,700 years ago.
The bronze instrument was discovered in a room adjoining the Temple of Hercules during ongoing excavations at the archaeological site. Experts identify the object as a lithulkos, a specialized surgical tool used during lithotomy, a delicate operation performed to remove painful bladder stones.
According to excavation director Professor Lyudmil Vagalinski, the discovery is one of the rarest examples of ancient medical equipment ever found.Image Credit : Archaeologia Bulgarica
"The instrument is an extremely rare find not only for Bulgaria, but also worldwide," Vagalinski explained. Based on currently available scientific literature, only one other comparable example has previously been discovered in Italy.
Although the curved hooks that originally formed part of the instrument are missing, archaeologists recovered its beautifully preserved bronze handle. Decorative embossed rings remain clearly visible, allowing researchers to identify the object despite its incomplete condition.
The lithulkos belonged to a highly specialized surgical kit used by skilled physicians. While Roman doctors commonly employed scalpels, probes, forceps, needles, spoons, and curettes, instruments designed specifically for bladder stone surgery are exceptionally uncommon. Their rarity reflects the complexity of the procedure and the advanced medical knowledge required to perform it.
The discovery dates to the 3rd century AD, when Heraclea Sintica was flourishing as an important Roman city. Its presence suggests that highly trained physicians practiced in the settlement, providing sophisticated medical care during one of the city's most prosperous periods.
Ancient medical writers described bladder stones as one of the most agonizing conditions known in antiquity. Roman author Pliny the Elder referred to the intense suffering caused by the disease, while the Greek physician Ammonius of Alexandria, who lived during the 3rd century BC, became famous for developing improved surgical methods and specialized instruments for removing bladder stones. His innovations earned him the nickname "Lithotomos," meaning "The Stone Cutter."
The location of the discovery has generated particular interest among archaeologists. The instrument was recovered from a room immediately adjacent to the Temple of Hercules, raising the possibility that the building served both religious and medical purposes.
Researchers speculate that pilgrims seeking divine healing at the temple may also have received treatment from physicians working nearby. Such a combination of spiritual belief and practical medicine would not have been unusual in the Roman world, where healing sanctuaries often attracted both worshippers and medical practitioners.
Professor Vagalinski emphasized that this interpretation remains a working hypothesis until additional evidence is uncovered. Ongoing excavations may reveal further architectural features or medical artifacts that clarify the function of the building.
The excavation team, consisting of seven archaeologists and dozens of workers, continues to investigate the area surrounding the Temple of Hercules. Thick deposits of river sediment are first removed using heavy machinery before delicate archaeological excavation proceeds by hand to document the ancient structures and artifacts.
The remarkable discovery highlights the advanced state of Roman surgical practice and demonstrates that specialized medical knowledge extended well beyond the major cities of the empire. It also reinforces Heraclea Sintica's importance as one of Bulgaria's most significant archaeological sites, continuing to reveal new evidence about daily life, religion, and healthcare during the Roman period.
As researchers continue their investigations, the rare lithulkos promises to become one of the most important archaeological discoveries illustrating the remarkable achievements of ancient Roman medicine.