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A new organ has been found behind your nose.

For centuries, every anatomy textbook swore there were only three pairs of major salivary glands. Turns out the books were wrong — and the missing ones were hiding in plain sight.

In 2020, Dutch researchers scanning head-and-neck cancer patients with a cutting-edge PET/CT technique (PSMA PET-CT) noticed an unexpected glow deep in the nasopharynx, right where the nasal cavity drains into the throat. No textbook had ever marked a salivary gland there.

They double-checked: 100 consecutive patients → same structure in every single one. Then they dissected two fresh cadavers and there they were: a previously unknown pair of macroscopic salivary glands, roughly 3.9 cm long, draped over the tubarium (the cartilage of the Eustachian tube). The team named them the tubarial glands.

Their job? Keep the upper throat and the back of the nose moist during talking, swallowing, and breathing — an area that gets painfully dry after radiation.

Here’s why this matters: radiation oncologists had never been told to spare this spot. The researchers re-analyzed treatment plans from 723 patients and found the more radiation the tubarial region received, the worse the toxicity — more trouble swallowing, thicker saliva, constant dry mouth.

A simple anatomical blind spot had been quietly worsening outcomes for years.

Now that we know these glands exist, new radiation protocols can shield them, giving thousands of head-and-neck cancer patients an easier road to recovery.