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Dahlem Strong

Mark Dahlem was told he had a mass in his brain on November 27, 2017 after going to the doctor for painful headaches. Mark had brain surgery three days later and was diagnosed with an aggressive Gliboblastoma brain cancer (GBM-Grade IV). Mark underwent immediate treatment and struggled through radiation and chemotherapy through February, 2018 while also fighting a saddle pulmonary embolism. Mark and his family went to Duke University for a second opinion. At Duke, Mark was diagnosed with adult Pilocytic Anaplasia (APA), a less aggressive form of brain cancer. That was welcome news, especially since Mark continued to recover from the side effects of his surgery and treatments. This news also provided hope that there would not be a regrowth for several years. Under the care of Duke University, Mark fought his way back to health and returned to full duty at the Palatine Police Department. Mark, Kim and their children were able to return to life as (mostly) normal for a short time.

Recently,  Mark had a scan of his brain which indicated a new growth in the frontal lobe. The Duke  medical team believes it to be another APA tumor as it is rapidly growing. Research is not yet able to understand how and why this type of tumor regrows in adults.  Mark started a chemotherapy drug on December 6th.  Unfortunately, Mark's body is rejecting treatment.

Mark was hospitalized this past week as he was unable to tolerate any food or liquids. His liver began to fail him so medications were halted to provide his body some  rest.  Doctors recently discharged Mark to his house with in-home medical support so he could be with his family for Christmas.

The next several days and weeks are uncertain with regard to the level of required care, in-home treatment , travel, and the possibility of another craniotomy (brain surgery) with rehab. The upcoming year will certainly bring new medical bills, deductibles and travel costs associated with Mark's treatment.

Mark & Kim continue to focus their efforts on Mark's treatment and on maintaining a stable family environment for Abby and Jack. Mark & Kim also work full-time as public servants when they are able to maintain a consistent work schedule. Mark's doctors continue to monitor his care and recommend updated treatment options as necessary. 

This page was created by Mark's Brothers & Sisters in Blue  ‍♀️‍♂️ in hopes of reducing the upcoming financial strain for the family. We want Mark & Kim to focus their time & energy on family & health. Merry Christmas, and  please keep Mark, Kim, Abby and Jack in your prayers.


  • Anonymous
    • $200 
    • 5 yrs

Organizer and beneficiary

Angela Thurman Bonneville
Lake in the Hills, IL
Kimberly Dahlem

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