Cases That Test Your Skills

Depression, or something else?

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On mental status examination, Ms. A is calm and she has no abnormal movements. She says she is depressed. Her affect is reactive and labile. She is alert and oriented to person, place, and time. Her attention, registration, and recall are intact. Her executive function is not tested. However, Ms. A’s insight and judgment seem poor.

To address Ms. A’s worsening depression, the psychiatry team increases her duloxetine from 30 to 60 mg/d, and she continues quetiapine, 50 mg every night at bedtime, for mood lability. Buspirone is not continued because she was not taking a therapeutic dosage in the community.

Within 4 days, Ms. A shows improvement in sleep, appetite, and mood. She has no further suicidal ideation.

The authors’ observations

Ms. A had a recurrence of what was presumed to be major depressive disorder (MDD) in the context of her mother’s death. However, she also exhibited irritability, mood lability, and impulsivity, all of which could be part of her depression, or a separate problem related to her brain tumor. Because Ms. A had never displayed bizarre behavior before the past few weeks, it is likely that her CNS lesion was directly affecting her personality and possibly underlying her planned suicide attempt.

Psychiatric symptoms of brain tumors

Fifty to 80% of patients with CNS tumors, either primary or metastatic, present with psychiatric symptoms.1 Table 11-3 lists common psychiatric symptoms of brain tumors. Unfortunately, there is little reliable evidence that directly correlates tumor location with specific psychiatric symptoms. A 2010 meta-analysis found a statistically significant link between anorexia nervosa and hypothalamic tumors.1 However, for other brain regions, there is only an increased likelihood that any given tumor location will produce psychiatric symptoms.1,4 For instance, compared to patients with tumors in other locations, those with temporal lobe tumors are more likely to present with mood disorders, personality changes, and memory problems.1 In contrast, patients with frontal lobe tumors have an increased likelihood of psychosis, mood disorders, and personality changes.1 Patients with tumors in the pituitary region often present with anxiety.1

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