has part has part has_part occurs in occurs in characteristic of part of has modifier pigmentation abnormal extracutaneous pigmentation abnormal leptomeninges pigmentation MP:0009391 MPheno.ontology any anomaly in the coloring of the two innermost layers of the meninges, including the pia mater and the arachnoid, due to changes in the amount, shape, or distribution of cells producing pigment quality abnormal leptomeninx