Superficial Thrombophlebitis of the Breast

A rare, benign inflammatory condition affecting the superficial veins of the breast and anterior chest wall, also known as Mondor disease.

It is characterised by a palpable, tender, cord-like induration typically following the course of a superficial vein, most commonly affecting the lateral thoracic or thoracoepigastric vein.

It is a self-limiting condition of no serious clinical significance in itself. However, it requires careful clinical assessment to exclude any underlying, associated pathology (including, uncommonly, an underlying breast malignancy), and appropriate reassurance given its sometimes alarming clinical appearance.

Pathophysiology

• The condition reflects localised thrombosis and associated inflammation of a superficial vein of the breast or anterior chest wall. The specific underlying trigger is frequently unclear.
• Recognised, potential associated factors include preceding trauma, surgery (including breast surgery or biopsy), and, in a small proportion of cases, an underlying breast malignancy producing local venous compression or a hypercoagulable state.
• The thrombosed, inflamed vein becomes palpable as a firm, cord-like structure, characteristically following the anatomical course of the affected superficial vein.
• The overlying skin frequently demonstrates a characteristic tethering or dimpling when the affected area is placed under gentle tension (reflecting the fibrous attachment of the thrombosed vein to the overlying skin). This is a useful, characteristic examination finding.
• The condition is generally self-limiting, with the thrombosed vein gradually resolving over the course of several weeks. The affected area may remain palpable as a firm, cord-like structure for a somewhat more prolonged period even after resolution of the acute inflammatory process.

• A tender, firm, cord-like palpable structure, typically following the course of a superficial vein of the breast or anterior chest wall (most commonly in the lateral or inferior aspect of the breast, corresponding to the typical course of the affected veins).
• This is the characteristic presentation, often with associated localised erythema in the acute phase.
• The characteristic skin dimpling or tethering when the affected area is placed under gentle tension, reflecting the specific relationship between the thrombosed superficial vein and the overlying skin, represents a useful, distinguishing clinical sign supporting this specific diagnosis.
• A relevant history of preceding trauma, strenuous physical activity, or breast surgery may be identifiable in some cases, though the condition frequently occurs without any clearly identified specific preceding trigger.
• Symptoms typically improve gradually over the course of several weeks, with the acute tenderness and erythema generally resolving before the palpable, cord-like firmness itself fully resolves.

• Diagnosis is generally established clinically, based on the characteristic presentation and examination findings, without the routine need for specific imaging investigation in a typical, straightforward presentation.
• This applies particularly where the characteristic cord-like structure and associated skin tethering are clearly apparent on examination.
• Ultrasound may be used to confirm the diagnosis and to exclude an alternative or associated pathology where there is any diagnostic uncertainty, typically demonstrating the characteristic appearance of a thrombosed, superficial vein.
• Given the recognised, though uncommon, association with underlying breast malignancy in a small proportion of cases, full breast examination is needed.
• Where any additional, relevant clinical concern is identified (including any coexisting discrete breast lump), appropriate further, full triple assessment is an important, prudent component of full evaluation, particularly in older women or where any other relevant risk factor or clinical concern is present.

• Reassurance regarding the benign, self-limiting nature of this condition, together with clear explanation of the underlying mechanism, represents the cornerstone of management once appropriate, full assessment has confirmed the diagnosis and excluded any relevant, associated concerning pathology.
• Simple analgesia, including a nonsteroidal anti-inflammatory drug where appropriate and not contraindicated, provides effective symptomatic relief for the acute tenderness and discomfort characteristic of the initial presentation.
• No specific, targeted treatment is generally required beyond this symptomatic approach, given the characteristically self-limiting natural history of this condition, with spontaneous resolution anticipated over the course of several weeks.
• Full patient education regarding the expected, generally favourable natural history.
• Give clear guidance to seek further assessment should any new or additional concerning feature develop (including a discrete, persistent lump distinct from the characteristic cord-like structure itself), underpins full, appropriately reassuring management of this uncommon, though benign and self-limiting, condition.