There are multiple definitions:

1. plasma thromboplastin component(English)

   • Hematology

2. pheochromocytoma with thyroid medulla carcinoma(English)

   • Oncology, Thyroid and parathyroid

3. posterior thigh circumflex vein(English)

   • SSV, AGSV
   • Anatomy

4. peritubular capillary [rarefaction](English)

   • commonly detected in CKD such as hypertensive nephrosclerosis and diabetic nephropathy
   • CKD
   • Nephrology, Diabetes, Hypertension
   • https://doi.org…90/ijms21218255

5. phase-transfer catalyst(English)

   • Biophysics

6. percutaneous transhepatic cholangiography(English)

   • a radiographic technique employed in the visualization of the biliary tree; can be the first step in a number of percutaneous biliary interventions such as biliary stent placement
   • MRCP, TIPS, PTC, ERCP
   • Biliary tract, Radiology
   • http://patholog….edu/pc/ptc.php

7. pseudotumor cerebri(English)

   • a clinical condition characterized by signs and symptoms of increased intracranial pressure, such as headache and papilledema
   • Brain (dys)function, Headache
   • https://doi.org…dev.2012.08.008

8. premature termination codon(English)

   • arises from a single nucleotide mutation that converts a canonical triplet nucleotide codon into one of three stop codons, e.g., TAG, TGA, or TAA. Often more deleterious than missense mutations because they result in the loss of protein expression
   • ACE-tRNA, RDEB-HS
   • Biochemistry, Genetics
   • https://doi.org…467-019-08329-4
   • https://doi.org…0X.2012.03638.x

9. phenylthiocarbamide(English)

   • sensitivity evaluated in relation to oral nutritional supplement hedonic palatability ratings
   • ONS
   • Nutrition, Diet, Taste / Gustatory sense, Scoring systems/scales
   • https://doi.org…11.2018.1428260

10. parathyroid cell(English)

    • hyperplasia of the parathyroid gland (PTG) is associated with changes of characteristics of these cells including hyperproliferative activity, low contents of vitamin D and calcium-sensing receptors
    • PDIT, PTG
    • Thyroid and parathyroid, Calcium, Vitamin
    • https://doi.org…/ndtplus/sfn095

11. psychophysical tuning curve(English)

    • CI, DR, PTP, TEN
    • Audiology
    • https://doi.org…005364000000131
    • https://doi.org…027.2013.840931

12. proximal thoracic curve(English)

    • AIS, ES, IS, MTC, RSH
    • Spine (or spinal cord), Risk factor
    • https://doi.org…000000000002423

13. premature termination codon(English)

    • arises from single nucleotide mutations that convert a canonical triplet nucleotide codon into one of three stop codons, e.g., TAG, TGA, or TAA. PTCs are often more deleterious than missense mutations because they result in the loss of protein expression
    • mRNA, NAS, NMD
    • Biochemistry
    • https://doi.org…467-019-08329-4

14. papillary thyroid cancer/carcinoma(English)

    • the most common malignant tumor of the endocrine system affecting more than 50,000 patients annually in the USA
    • ATG, CLND, CN, HT, PG, TPOAb, CND, LNY, PLN, RCLD, RATH, TAA, TARA, TGDCa, RET, WDPTC
    • Thyroid and parathyroid, Oncology, Endocrinology, Surgery
    • https://doi.org…000000000031257
    • https://doi.10.7150/ijms.29935
    • https://doi.org…ogy.2021.105567
    • https://doi.org…2957-016-1003-5
    • https://doi.org…0434-012-2674-y
    • https://doi.org…medchem.0c02167