Note that MN 10, the Satipaṭṭhāna sutta, stops right after section 4.5 (just mentioning the Truths) before going directly to the concluding paragraphs. However, DN 22, the Mahāsatipaṭṭhāna sutta, elaborates in detail on the four truths (sections 4.5.1 → 4.5.4).
Note that this detailed analysis of the truths can be found separately in MN 141 (Saccavibhaṅga). It’s as if the early compilers of the canon did some cutting and pasting such that DN 22 = MN 10 + MN 141, approximately.