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Type I Diabetes II: Pathophysiology

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Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...

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Type I Diabetes III: Clinical Manifestations

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Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...

Diabetes Mellitus: Overview and Type I Subtype

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Related Experiment Video

Updated: May 9, 2026

Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells

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Published on: May 6, 2013

Breast inflammation in type 1 diabetes.

D Makanjuola¹, A Al Kushi, M Al Zaid

¹Medical Imaging Department, King Abdulaziz Medical City, Riyadh KSA.

West African Journal of Medicine

|August 6, 2013

Summary

Lymphocytic mastitis, a breast condition in diabetics, shows varied imaging. Follow-up reveals intense acoustic shadowing, suggesting type 1 diabetes in young women with breast abscess.

Area of Science:

Radiology
Endocrinology
Pathology

Background:

Lymphocytic mastitis is a rare fibroinflammatory breast condition associated with long-standing diabetes.
Imaging findings for lymphocytic mastitis can vary significantly across mammography, ultrasound, and MRI.
This study investigates imaging variations and presents cases of breast abscess as an initial manifestation of type 1 diabetes.

Observation:

The study included 13 women (ages 22-54) with pathologically confirmed lymphocytic mastopathy or breast abscess.
Clinical presentation varied from painless masses (lymphocytic mastitis) to painful masses (breast abscess), notably in young, non-lactating women.
Mammography commonly showed stromal distortion; ultrasound revealed initial stromal changes or mass-like lesions.

Findings:

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Follow-up imaging (2-4 years) demonstrated interval development of dense acoustic shadowing without masses in all cases.
Complete resolution occurred in 40% of lymphocytic mastitis cases, with partial resolution in the rest.
Breast abscesses in young, non-lactating females may indicate type 1 diabetes.

Implications:

Understanding varied imaging patterns is crucial for diagnosing lymphocytic mastitis.
Persistent acoustic shadowing on ultrasound is a characteristic chronic change.
Breast abscesses in young, non-lactating women warrant investigation for type 1 diabetes.