Psychiatric symptoms, true except -a) More common with supra than infratentorial tumorsb) More common with slow growingc) More with temporal than frontal lobe tumoursd) More with brain stem lesions

**Core Concept**
Psychiatric symptoms can arise from various intracranial processes, particularly those affecting the brain's structure or function. The relationship between tumor location and psychiatric manifestations is influenced by the brain's anatomical and functional organization.

**Why the Correct Answer is Right**
Psychiatric symptoms are indeed more common with infratentorial tumors, such as those located in the posterior fossa, due to their proximity to critical brain regions involved in mood regulation, cognition, and emotional processing. These areas include the brainstem, cerebellum, and posterior cerebral cortex. The infratentorial location of tumors can lead to increased intracranial pressure, edema, and direct compression of these critical structures, resulting in a higher likelihood of psychiatric symptoms. In contrast, supratentorial tumors, which are located above the tentorium, are less likely to cause direct compression of these areas.

**Why Each Wrong Option is Incorrect**
**Option A:** This statement is incorrect because psychiatric symptoms are actually more common with infratentorial tumors, not supratentorial tumors.
**Option B:** This statement is incorrect because the growth rate of tumors does not directly correlate with the likelihood of psychiatric symptoms. Both slow-growing and rapidly growing tumors can cause psychiatric symptoms, depending on their location and impact on brain function.
**Option C:** This statement is incorrect because temporal lobe tumors are more likely to cause psychiatric symptoms, particularly those related to mood and emotional regulation, rather than frontal lobe tumors, which are more likely to cause cognitive and motor symptoms.
**Option D:** This statement is incorrect because while brainstem lesions can cause psychiatric symptoms, they are not more common than those caused by infratentorial tumors.

**Clinical Pearl / High-Yield Fact**
When evaluating a patient with a new-onset psychiatric symptom, always consider the possibility of an underlying intracranial process, particularly if the patient has a history of cancer or a recent change in neurological status.

**Correct Answer: D. More with brain stem lesions