1), which on immunohistochemistry [table 1] were CD20, CD5 (fig. 2), bcl-2 (fig. 3), CD23 (fig. 4) positive, CD10 and cyclin D1 negative compatible with small lymphocytic lymphoma. Only a single section showed a small metastatic focus of MM (fig. 5), measuring 1.5 mm in maximum diameter. This was of the epithelioid type that expressed MM markers, (fig. 6, 7) consistent with the previous diagnosis. This evidence concerns the gene MS4A1 and Miyoshi myopathy.