Tram tracking is a phrase used to describe findings in medical conditions that bear some resemblance to tramway track

Tramway track

Tramway track is used on tramways or light rail operations. Grooved rails are often used in order to make street running feasible...

s.

Pulmonology

Tram tracking is a radiologic sign

Radiologic sign

A radiologic sign is an "objective" indication of some medical fact or quality that is detected by a physician during examination of a radiograph .-Examples:*Football sign*Hampton's hump*Omental cake*Pneumatosis intestinalis...

 seen with pulmonary edema

Pulmonary edema

Pulmonary edema , or oedema , is fluid accumulation in the air spaces and parenchyma of the lungs. It leads to impaired gas exchange and may cause respiratory failure...

 due to congestive heart failure

Congestive heart failure

Heart failure often called congestive heart failure is generally defined as the inability of the heart to supply sufficient blood flow to meet the needs of the body. Heart failure can cause a number of symptoms including shortness of breath, leg swelling, and exercise intolerance. The condition...

 and in Bronchiectasis. Tram tracking refers to the thickening of bronchial walls on lateral chest radiograph.

Nephrology

"Tram-tracking" is also used to describe the basement membrane

Basement membrane

The basement membrane is a thin sheet of fibers that underlies the epithelium, which lines the cavities and surfaces of organs including skin, or the endothelium, which lines the interior surface of blood vessels.- Composition :...

 duplication found on light microscopy that is characteristic of membranoproliferative glomerulonephritis

Membranoproliferative glomerulonephritis

Membranoproliferative glomerulonephritis , also known as mesangiocapillary glomerulonephritis, is a type of glomerulonephritis caused by deposits in the kidney glomerular mesangium and basement membrane thickening, activating complement and damaging the glomeruli.MPGN accounts for approximately 4%...

 (MPGN) type I. (It is less commonly associated with types II and III.)

Neurology

The term has also been used to describe findings associated with optic nerve sheath meningioma

Optic nerve sheath meningioma

Optic nerve sheath meningiomas are rare benign tumors of the optic nerve. 60–70% of cases occur in middle age females, and is more common in older adults . It is also seen in children, but this is rare. The tumors grow from cells that surround the optic nerve, and as the tumor grows, it compresses...

.