I have a 1cm pituitary adenoma (1cm = 10mm). I wrote from my experience and acquired knowledge of pituitary adenomas.
A pituitary adenoma that is 1 cm or larger is called a macro adenoma. A pituitary adenoma that is smaller than 1 cm is called a micro adenoma.
The pituitary gland sits in a bowl-shaped boney enclave at the base of the brain, just behind the sinuses, called the sella tursica. The pituitary gland is the size of a small pea.
Full brain CT scans and MRI scans can lack adequate imaging sensitivity to uncover a small pituitary micro adenoma. Detection of a micro adenoma often requires an MRI with specific focus of the sella tursica using gallium contrast. A Tesla T 4 magnet is often necessary to detect a micro adenoma. An older generation of MRI magnet (T 3 and lower) may be insufficient in imaging acuity to detect a micro adenoma.
As I mentioned to you in an early thread, a pituitary adenoma, in and of itself, is not necessarily symptomatic. It is estimated that 1 in every 5 individuals has a inconsequential pituitary adenoma. That is, 1 in every 5 individuals has a pituitary adenoma that has no adverse effects.
A pituitary adenoma of 6 mm would have no mass effect on brain tissue. A 6 mm pituitary adenoma is too small to have any effect compressing adjacent brain tissue nor cause a mid-line shift in brain tissue. A 6 mm adenoma would have an adverse effect depending on whether or not it secrets an excessive amount of one of the pituitary gland’s primary hormones. An adenoma that secretes excessive cortisol, for example, is the basis of Cushing’s syndrome. Pituitary adenomas form by over-replication of one of the pituitary gland’s primary hormones. The basis by which a micro adenoma forms is owing to an over abundance of one of the pituitary’s primordial cell types. As an example, my pituitary adenoma was growth hormone secreting.
To be honest, the symptoms that you list (numbness of the side of your face and leg; profound leg weakness; loss of motor control to a leg) are not symptoms typical of a pituitary adenoma. Your symptoms are more suggestive of a central nervous system demyelination process or small foci white matter strokes/cerebral blood flow disruption or a movement disorder with origin in the deep motor nuclei (ex. Parkinson’s).
What type of physician (speciality of practice) are you seeing?
Bottom Line: A pituitary micro adenoma is often too small to be detected by a full brain MRI. The adenoma seem on a CY exam may be too small to be seen by a whole brain MRI. To visualize a microadenoma via MRI the better option is to ordeee a MTi aoecific to the pituitary gland with administration of IV gallium as a contrast agent. The symptoms you cite are not commonly associated with a pituitary adenoma. Symptoms of a pituitary adenoma are aligned with the excess hormone being secretes. Ex. My growth hormone secreting adenoma caused symptoms of bone and joint pain, enlarged feet/shoe size.
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