PTH and pachyonychia congenita: In our cohort, most of the patients with pHPT and PTC had moderately elevated PTH (77.78%) and normocalcemic or mildly elevated albumin-corrected serum calcium levels (88.89%), but interestingly, when pHPT due to PC was associated with PTC (two cases), higher levels of PTH (in both cases) and calcium (one case) were recorded.