marine city en Investigation into rare cancer cases in Michigan gets help <p>Earlier this year, public health officials in St. Clair County began investigating whether environmental factors might be contributing to rare kidney cancers in some kids in the Marine City-China Township area.</p><p>Now, the investigation is getting the help of an epidemiologist.</p><p>More from the <a href="">Times Herald of Port Huron</a>:</p><blockquote><p>An investigation into a possible cancer cluster is expected to pick up next month.</p><p>A part-time epidemiologist starts Oct. 1.</p> Thu, 15 Sep 2011 15:55:35 +0000 Mark Brush 4164 at Investigation into rare cancer cases in Michigan gets help St. Clair Co. officials expand look into cancers <p>MARINE CITY, Mich. (AP) - Public health officials in St. Clair County are expanding their investigation into whether environmental or other factors could be responsible for a rare form of kidney cancer diagnosed in children in the Marine City area.</p><p>The investigation started this year looking into five cases of Wilms&#39; tumor since 2007 in southeastern St. Clair County. <a href="|topnews|text|FRONTPAGE">The Times Herald of Port Huron</a> reported Thursday that eight cases now are included, including two in the Port Huron area and one in Richmond.</p><p>Officials say another case in the St. Clair Shores area isn&#39;t being considered because it&#39;s too far away.</p><p>Marine City, which is located about 40 miles northeast of Detroit, has industrial plants and is about 10 miles from petrochemical plants in Sarnia, Ontario. But health officials say there&#39;s no established link. Fri, 13 May 2011 12:39:21 +0000 The Associated Press 2480 at