[PPTH Diagnostics Conference Room — December 8, 2004, 11:00 AM]
The patient's name was Martin Hale, and Isaac had never seen him before.
Not in person — that was expected. But not on television either. Not in any episode, any season, any fragment of the Memory Palace's carefully organized wing of show knowledge. Isaac ran the search three times while House wrote symptoms on the whiteboard, flipping through mental files organized by presenting complaint, patient demographics, and diagnostic outcome. Nothing matched.
Forty-two-year-old male. High school principal. Presented with progressive bilateral leg weakness over two weeks, accompanied by intermittent double vision and unexplained weight loss. No fever. No pain. Just a man whose legs were slowly refusing to work, and a body that was consuming itself for reasons nobody could name.
Isaac sat at the conference table with his coffee — he'd started buying it from the cart vendor on Nassau Street instead of drinking the hospital's industrial brew, a small upgrade that had become the highlight of his mornings — and watched House fill the whiteboard with the particular intensity that meant this case was interesting enough to warrant his full attention.
"Two weeks of progressive weakness," House said, writing. "Neuro exam shows upper motor neuron signs — hyperreflexia, positive Babinski. Double vision intermittent, worse with fatigue. Ten-pound weight loss in a month." He capped the marker. "Differential."
"ALS," Foreman said. "Progressive weakness with upper motor neuron signs in a man his age. Classic presentation."
"ALS doesn't cause double vision," Cameron countered. "Cranial nerve involvement suggests something higher — brainstem lesion, maybe."
"MS could give you all three." Chase had abandoned his crossword — the case was interesting enough to pull him in. "Brainstem plaque causing the diplopia, spinal cord involvement for the leg weakness, and weight loss from chronic inflammation."
"MRI of the brain and spine was done at his primary care office. Clean." House tapped the whiteboard. "No plaques. No masses. No lesions. His doctor sent him to us because two weeks of workup produced nothing, and the patient keeps getting worse."
Isaac searched the Memory Palace one final time. Martin Hale. Bilateral weakness. Double vision. Weight loss. Clean imaging. Nothing. The show either hadn't featured this case or Isaac's memory — imperfect, human, organized but not omniscient — had lost it. Either way, he was flying without a net.
The realization should have been frightening. Instead, something loosened in his chest — a tension he hadn't known he was carrying. For the first time since the transmigration, he was going to work a case the way every other doctor in this room worked cases. Without knowing the answer. Without the safety net of meta-knowledge. Without the particular strain of holding back information while pretending to search for it.
Just medicine.
"Could be paraneoplastic syndrome," Isaac said. The words came from the Memory Palace's medical wing — Burke's training, organized and accessible, cross-referenced against the presenting symptoms. "Occult malignancy producing antibodies that attack the nervous system. Would explain the progressive weakness, cranial nerve involvement, and weight loss without any imaging findings — the tumor could be tiny, hiding in the lung or ovary or thymus."
House's marker tapped against the whiteboard. Not writing yet. Considering.
"Paraneoplastic." He tested the word like a sommelier testing a wine. "Which antibodies?"
"Anti-Hu would explain the sensorimotor neuropathy. Anti-CV2 could give you the cranial nerve involvement." Isaac was building the differential in real-time, pulling from textbooks he'd memorized, from journal articles Burke's body had once studied, from the structured medical knowledge that existed independent of any supernatural advantage. "If it's paraneoplastic, we need an antibody panel and a CT of the chest, abdomen, and pelvis to find the primary."
"Or it's Lambert-Eaton," Foreman said. "Paraneoplastic variant, often associated with small cell lung cancer. Progressive weakness, autonomic dysfunction, can affect ocular muscles."
"Lambert-Eaton is lower motor neuron," Cameron said. "The reflexes should be decreased, not increased. His exam shows hyperreflexia."
"Unless there's dual pathology." Chase leaned forward. "Paraneoplastic antibodies attacking both upper and lower motor neurons. It happens."
The differential expanded. House wrote possibilities on the board — ALS (still), paraneoplastic syndrome, sarcoidosis, lymphoma with CNS involvement, chronic inflammatory demyelinating polyneuropathy. The list grew and the team argued and Isaac contributed, and the work felt different from every other case he'd touched since arriving.
It felt earned.
---
[PPTH Patient Room 412 — 2:30 PM]
Isaac examined Martin Hale while Cameron took a detailed history. The principal was a large man — six-two, broad-shouldered, the kind of frame that suggested a former athlete who'd maintained partial discipline. His legs were thin beneath the hospital gown, the muscle wasting visible even without Transparent World.
Isaac used the power anyway. A surface scan — five seconds, quick enough to avoid the headache — confirming what the physical exam already showed. Motor neuron degeneration in both legs, the nerve signals weakening as they traveled from spine to muscle. Upper motor neuron pattern. No visible tumor, no inflammation, no vascular abnormality.
But something else. Faint, barely visible at the surface scan level — a shimmer in the vascular system of Hale's chest. Not a mass. Not an obstruction. A diffuse metabolic signature that Isaac didn't have the experience to interpret. He filed it in the Memory Palace and moved on.
"Mr. Hale, have you had any recent infections? Vaccinations? New medications?"
"Nothing." Hale's voice was steady, but his hands gripped the bed rails with the white-knuckle tension of a man watching his body betray him. "I was healthy. Coaching the basketball team, running three miles a day. Then my left leg started dragging, and now I can barely walk."
Cameron was asking about family history — cancer, autoimmune disease, neurological conditions. Hale answered patiently. His wife sat in the corner chair, knitting needles still in her bag, hands clasped in her lap with the forced composure of someone holding herself together through grip strength alone.
Isaac finished the exam and left Cameron to complete the history. In the hallway, he pulled out his phone — Burke's Nokia — and checked the time. 3:15 PM. He'd spent forty-five minutes on the exam and history, the kind of thorough, unhurried visit that would look normal on any chart review. No clinic-speed efficiency. No impossible shortcuts.
The antibody panel results came back at 5:00 PM. Isaac was in the conference room with Foreman, both of them reviewing labs, when Cameron walked in with the printout.
"Anti-CV2 antibodies positive." Cameron set the paper on the table. "Strongly positive."
Foreman looked at Isaac. The expression wasn't quite respect — Foreman didn't give respect casually — but it was the closest thing: professional acknowledgment from a competitor who recognized a good call.
"Paraneoplastic," Foreman said. "Nice catch."
"We need to find the primary tumor." Isaac pulled up the antibody reference in his Memory Palace — anti-CV2 most commonly associated with small cell lung cancer, thymoma, and occasionally sarcoma. "CT chest, abdomen, pelvis. And a PET scan if the CT is equivocal."
House appeared in the doorway. He'd been listening — how long, Isaac couldn't tell. The cane was quiet against the carpet.
"Paraneoplastic was your call?" House directed the question at the room, but his eyes were on Isaac.
"Joint effort. Foreman suggested Lambert-Eaton, which put us in the paraneoplastic territory."
"Mm." House's noncommittal sound — the one that meant he was filing information without commenting on it. "Run the imaging. If there's a tumor, find it."
The CT found a two-centimeter mass in the right lung apex. Small cell carcinoma, early stage, operable. The tumor was producing antibodies that were attacking Martin Hale's nervous system from the inside — a cancer so small it hadn't caused a single respiratory symptom, announcing itself only through the collateral damage of its immunological signature.
Isaac stood at the light box with the team, looking at the tiny white dot in Hale's lung, and the satisfaction was clean. Not the tainted relief of the pilot case, where he'd known the answer and performed the dance of discovery. Not the hollow victory of the maternity ward, where Transparent World had done the work and pattern recognition had provided the alibi.
This was a diagnosis built from training, collaboration, and the kind of medical reasoning that didn't require supernatural assistance. Foreman's Lambert-Eaton suggestion had steered the conversation. Cameron's history had provided context. Chase's dual-pathology idea had broadened the framework. Isaac's paraneoplastic call had been the right one, but it had been a call — a guess, informed but uncertain, the kind of diagnostic leap that any well-read fellow might make on a good day.
"Good work," House said. Two words. From House, a medal ceremony.
Isaac walked to the whiteboard after the team dispersed and erased the differential. The marker came off clean — no residue, no ghost of the writing underneath. A case solved the honest way, leaving no evidence of anything impossible.
The relief was so sharp it almost hurt.
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