“The Cutters inside my skull are also at risk,” Hellishomar said. “Tell them.”
Without taking time to reply Lioren switched to the public channel and began to speak.
Although he could not be absolutely certain because of the small amount of information that the patient had been able to give him, Lioren said that he felt sure the original cause of the black intercranial growth was due to infestation by a species of parasitic vegetable vermin known to the Groalterri as a skin- sticker, which was considered to be a periodic nuisance rather than a threat to life. Nothing was known about the life cycle or reproduction mechanism of the skinsticker because they could be easily removed, brushed away with the manipulatory tentacles or by rubbing the affected area of tegument against a tree, and a life-form with the enormous physical mass and limited dexterity of the Groalterri had neither the desire nor the ability to investigate the habits of a near-microscopic form of plant life.
Skinstickers were black, spherical, and covered with a vegetable adhesive which enabled them to attach themselves to the host’s body and extend their single feeder root while they were still too small to be seen. They required only an organic food source and the presence of light and air to grow very quickly to the size when they became a nuisance and were removed. They could be destroyed by crushing between hard surfaces or by burning, and after removal the root, which had a high liquid content, withered quickly and fell out of the wound it had made.
Lioren went on, “My theory is that this case was the result of infestation by a single skinsticker which gained entry via a small abrasion which the patient no longer remembers or through the puncture wound left by the root of an earlier and unsuccessful skinsticker, and was carried through the circulatory system until it lodged in the cranium. Once there it had a virtually limitless food supply but not, apart from the tiny amount of oxygen it was able to absorb from the local blood supply, the light and air its metabolism required for optimum growth. The growth rate was inhibited but it has had a great many years, a young Groalterri’s very long lifetime, in which to grow to its present size.”
Except for the slow and near-silent beating of Prilicla’s wings, the ward might have been a still picture as Lioren finished speaking. It was Conway who reacted first.
“An ingenious theory, Lioren,” the Diagnostician said, “and while obtaining this information and discussing it between you, you have succeeded in pacifying our patient. That was well done. But whether or not your theory is correct, and I believe that it is, our procedure must continue as originally planned.”
Imperceptibly Conway’s manner changed from one of person-to-person conversation to that of lecturer-student instruction as it went on. “This foreign tissue, tentatively identified as a massively overgrown Groalter skinsticker, will be excised in very small pieces whose size will be dictated by the maximum orifice setting of our suction unit. Many hours of patient, careful work will be required to accomplish this, particularly in the later stages if there are adhesions to healthy brain tissue, and rest periods or relays of surgeons may be necessary. However, since the patient has shown no impairment or deterioration in mentation since its arrival here, and the growth has been present for a very long time, its removal may be considered necessary but nonurgent. We will be able to take all the time we need to insure that-”
“No,” Lioren said harshly.
‘ ‘No?” Conway sounded too surprised to be angry, but Lioren knew that the anger would not be long in coming. “Why not, dammit?”
“With respect,” Lioren said, “the screen shows that your original incision is widening and extending in length. Let me remind you that the skinsticker grows rapidly in the presence of light and air and, after a great many years in the airless dark, light and air are again present.”
For a few moments Conway directed angry and self-abusive words at itself, then suddenly the main screen turned black as it switched off its helmet lighting and said, “This will slow the rate of growth a little. I need time to think …”