DISCUSSION
Primary brain tumors account for about 2% of all malignant neoplasms in adults. About half of them represent gliomas. Glioblastoma multiforme derived from neuroepithelial cells is the most frequent and deadly primary malignant central nervous system tumor in adults.8 About 50% of patients with glioblastomas are aged ≥ 65 years at diagnosis.9 A retrospective study of Centers for Medicare and Medicaid Services claims data paired with the Surveillance, Epidemiology, and End Results database indicated a median survival of 4 months for patients with glioblastoma multiforme aged > 65 years, including all treatment modalities.10 Surgical resection combined with radiation and chemotherapy offers the best prognosis for the preservation of neurologic function.11 However, comorbidities, adverse drug effects, and the potential for postoperative complications pose significant risks, especially for older patients. Ultimately, goals of care conversations and advance directives play a very important role in evaluating benefits vs risks with this malignancy.
Our patient was aged 80 years and had previously been diagnosed with metastatic prostate malignancy. His goals of care focused on spending time with his friends, leaving his room to eat in the facility dining area, and continuing his daily walks. He remained clear that he did not want his care team to institute life-sustaining treatments to be kept alive and felt the information regarding the risks vs benefits of accepting chemotherapy was not aligned with his goals of care. Over the 6 months that he received hospice care, he gained weight, improved his hemoglobin and serum albumin levels, and ambulated with the use of a 4-wheeled walker. As the patient exhibited no functional decline or new comorbidities and his functional status improved, the clinical staff felt he no longer needed hospice services. The patient had an ECOG score of 2 and a KPS score of 70% at his hospice graduation.
Medical prognostication is one of the biggest challenges clinicians face. Clinicians are generally “over prognosticators,” and their thoughts tend to be based on the patient relationship, overall experiences in health care, and desire to treat and cure patients.12 In hospice we are asked to define the usual, normal, or expected course of a disease, but what does that mean? Although metastatic malignancies usually have a predictable course in comparison to diagnoses such as dementia, chronic obstructive pulmonary disease, or congestive heart failure, the challenges to improve prognostic ability andpredict disease course continue.13-15 Focusing on functional status, goals of care, and comorbidities are keys to helping with prognosis. Given the challenge, we find the PPS, KPS, and ECOG scales important tools.
When prognosticating, we attempt to define quantity and quality of life (which our patients must define independently or from the voice of their surrogate) and their ability to perform daily activities. Quality of life in patients with glioblastoma is progressively and significantly impacted due to the emergence of debilitating neurologic symptoms arising from infiltrative tumor growth into functionally intact brain tissue that restricts and disrupts normal day-to-day activities. However, functional status plays a significant role in helping the hospice team improve its overall prognosis.
Conclusions
This case study illustrates the difficulty that comes with prognostication(s) despite a patient's severely morbid disease, history of metastatic prostate cancer, and advanced age. Although a diagnosis may be concerning, documenting a patient’s status using functional scales prior to hospice admission and during the recertification process is helpful in prognostication. Doing so will allow health care professionals to have an accepted medical standard to use regardless how distinct the patient's diagnosis. The expression, “as the disease does not read the textbook,” may serve as a helpful reminder in talking with patients and their families. This is important as most patient’s clinical disease courses are different and having the opportunity to use performance status scales may help improve prognostic skills.