Pituitary Tumors: Recognizing the Signs and Knowing When to Act

Pituitary tumors are common, but they rarely present in a way that makes them easy to diagnose. 

Many are found incidentally. Others develop slowly, with symptoms that are subtle, nonspecific, or attributed to other conditions. By the time patients are referred for evaluation, they may have already experienced meaningful changes in vision, hormonal function, or overall quality of life. 

For referring providers, the challenge is not just identifying a pituitary tumor. It is understanding when that tumor becomes clinically significant and when it requires a higher level of evaluation. 

At Atlantic Health, that process is approached with a multidisciplinary lens. Yaron Moshel, MD, neurosurgeon, and Giant Lin, MD, an ear, nose and throat specialist with expertise in skull base surgery, work together to evaluate and treat these patients. Their approach starts with a simple principle: the tumor itself is only part of the story. 

“The pituitary gland is the master gland of the body,” Dr. Moshel explained. “Even a relatively small tumor can have wide-ranging effects because of where it sits and what it controls.” 

What a Pituitary Tumor Is and Why It Matters Clinically 

The pituitary gland is about the size of a pea, located at the base of the brain just above the nasal cavity and between the optic nerves. Despite its size, it plays a central role in regulating hormones across multiple organ systems. 

“It controls everything from thyroid function to cortisol levels to reproductive hormones,” Dr. Moshel said. “So when something disrupts that system, patients can present in very different ways.” 

Most pituitary tumors are benign adenomas. That distinction is important, but it can also be misleading. Benign does not mean insignificant. 

These tumors can affect patients in two primary ways. They can compress nearby structures, particularly the optic nerves, or they can alter hormone production, either increasing or decreasing output. Understanding those two pathways is key to recognizing when a tumor needs to be addressed. 

Common Pituitary Tumor Symptoms: Vision Changes and Hormonal Imbalance 

One of the more consistent triggers for evaluation is visual disturbance. 

“A lot of patients come to attention because the tumor has grown enough to press on the optic nerves,” Dr. Moshel said. “They may notice changes in their peripheral vision or difficulty seeing clearly.” 

This often develops gradually. Patients may not recognize the change until it begins to interfere with daily activities, such as driving. 

Hormonal symptoms can be more variable and, at times, more difficult to connect to the underlying cause. 

Depending on the type of tumor, patients may experience fatigue, unexplained weight changes, or shifts in libido or menstrual cycles. In other cases, the tumor may suppress normal pituitary function, leading to deficiencies rather than excess hormone production. 

“Some patients don’t have dramatic symptoms,” Dr. Moshel said. “They just don’t feel like themselves, and it can take time to connect that back to the pituitary.” 

Incidental Pituitary Tumors on MRI: When to Monitor vs Act 

With more imaging being performed for unrelated reasons, incidental pituitary tumors are being identified more frequently. 

These cases require a different level of consideration. 

Not every tumor needs immediate intervention. Some can be monitored safely with imaging and endocrine evaluation. The key is determining whether the tumor is stable or progressing, and whether it is affecting surrounding structures or hormone function. 

“There are definitely patients we follow over time,” Dr. Moshel said. “The decision to intervene is based on what the tumor is doing, not just the fact that it’s there.” 

When to Refer for a Pituitary Tumor: Clinical Triggers for Evaluation 

While some cases can be observed, there are clear scenarios where further evaluation is warranted. 

Visual symptoms remain one of the most important indicators. Compression of the optic apparatus is a strong driver for intervention, particularly when there is evidence of progression. 

“If the tumor is affecting vision, that becomes a priority,” Dr. Moshel said. “The goal is to relieve that pressure before it causes permanent damage.” 

Hormone-secreting tumors represent another category where early referral is important. Excess hormone production can lead to significant systemic effects, including conditions like Cushing’s disease or acromegaly. 

In these cases, the goal extends beyond tumor removal. It includes restoring hormonal balance and preventing long-term complications. 

Tumor growth pattern also plays a role. Some tumors extend beyond the sella into surrounding structures, including areas where surgical access becomes more complex. 

“There are situations where part of the tumor may be near critical structures like the carotid artery,” Dr. Moshel said. “Those decisions about how aggressively to treat are made as a team.” 

Multidisciplinary Pituitary Tumor Care: Why a Team-Based Approach Matters 

One of the defining features of pituitary tumor care at Atlantic Health is the team-based approach. 

“These cases are not managed in isolation,” Dr. Lin said. “They involve neurosurgery, ENT, endocrinology, radiology, and often ophthalmology. Each plays a role in how we evaluate and treat the patient.” 

This collaboration starts before surgery is even considered. 

Patients are reviewed in a multidisciplinary setting where imaging, lab work, and clinical findings are discussed collectively. This ensures that the treatment plan is tailored to the individual patient, not just the tumor. 

“There’s a lot of planning that goes into these cases,” Dr. Lin said. “The surgery itself is one day. The preparation and follow-up are just as important.” 

Minimally Invasive Pituitary Surgery: How Treatment Has Evolved 

Historically, many pituitary tumors required open surgical approaches, including craniotomy. That has changed significantly over the past two decades. 

Advances in endoscopic techniques now allow many of these tumors to be approached through the nasal cavity, avoiding external incisions and minimizing disruption to the brain. 

“We’re able to do most of these cases in a minimally invasive way now,” Dr. Lin said. “That has changed the patient experience in a meaningful way.” 

This evolution in technique is one of the reasons why early evaluation matters. Patients who are referred at the right time often have more options available to them. 

Clinical Perspective for Referring Providers 

Pituitary tumors often present with subtle, evolving symptoms. Early recognition requires a high index of suspicion and an understanding of how these tumors affect both structure and function. 

For referring providers, the key is not reacting to the imaging alone, but recognizing patterns that suggest clinical impact. Visual changes, hormonal abnormalities, and evidence of progression should prompt further evaluation. 

“When these patients are evaluated in the right setting, we can put all the pieces together,” Dr. Moshel said. “That’s what allows us to determine the best course of action.” 

Learn More or Refer a Patient 

To learn more about pituitary tumor care at Atlantic Health or to schedule a consultation with Dr. Moshel, Dr. Lin, and the multidisciplinary team, visit the Gerald J. Glasser Brain Tumor Center, or call us at 908-522-5914.