Although words like lymphocyte, lymph node, lymph, and lymphatic vessels are common in daily medical activities, Lymphology has always been considered as a sort of younger sister to Angiology or Phlebology. Also, apart from few pioneer physicians, it has never been investigated as a discreet, well identified area of research.

Therefore, the following “Dictionary” aims to be a sort of metaphorical “window” on the extensive and still poorly explored world of lymphatic diseases, as well as to provide some useful, basic information for a correct diagnosis of patients affected by lymphatic-lymph node disorders.

Questo “Dizionario” vuole, quindi, rappresentare una sorta di metaforica “finestra” sul vasto ed ancora poco inesplorato mondo della patologia linfatica e fornire utili elementi di conoscenza di base per una corretta diagnosi e gestione del paziente affetto da alterazioni del sistema linfatico-linfonoidale.


Neuro-muscular system dysfunction with indirect repercussions on the physiological progression of the lymph from the periphery to the trunk. Lymphatic drainage is significantly reduced by the absence, especially if prolonged, of muscular activity. Therefore, in individuals without a perfectly healthy and functioning lymph-venous system, a lymph-venous edema may develop, called functional “disuse” lymphedema. Patient’s conditions, however, can get better through reactivation of adequate motility or with the use of external muscle stimulators and or compression stockings, which, respectively, stimulate and amplify any contractile action deficit.


Combined, highly complex, physical therapy, also called CDP (Complex Decongestive Physiotherapy). It features the following actions: appropriate hygiene, manual lymphatic drainage, multilayer functional bandages, and physical exercise. In particular, manual lymphatic drainage was developed by Vödder from 1936 to 1939, and later upgraded and extended to a more modern technique by the “German School” of Prof. M. Földi, as part of the above mentioned CDP.


Genetically, it refers to an extremely heterogeneous group of clinical conditions associated with the presence of parasites of the Onchocercoidea family (Filarioidea superfamily) in the human body. More specifically, lymphatic filariasis is caused by two different nematode parasites: Wuchereria bancroftii and Brugia malayi. These parasites are transmitted in their larval stage by different types of Arthropoda (Anopheles, Aedes togoi, Mansonia), they then grow inside the human body, initially in the form of microfilarias and, at a later stage, about 90 days later, they become adults and stay so also for many years. Their entire growth takes place in subcutaneous tissues at the level of lymphatic collectors. Clinical manifestations associated with this parasitosis of the lymphatic structures may range from acute lymphangitis, to lymphadenitis, and the development of chronic lymphedema, as well as elephantiasis. The pathologic process often begins when the parasite dies, and granulomatous fibrosis is triggered by microorganism debris and by the products released during their maturation, causing thrombolymphangitis with eosinophylic invasion and, therefore, subsequent mechanical occlusion of the affected collectors, while setting up the physiopathological conditions for the development of chronic secondary post-infection lymphedema. Filariasis is endemic in India, China, South-East Asia, and Korea. Its diagnosis is mainly based on the patient’s medical history and clinical examination (in some specific and initial cases of W. bancroftii infections, microfilarias can be isolated in the blood during the night). Medical therapy against parasitic infection is mainly based on diethyl carbamazepin and other anti-parasitic drugs. Conversely, therapies in case of lymphangiologic complications (e.g. chronic secondary lymphedema) do not differ from the combined therapy successfully employed in the treatment of other chronic secondary lymphedemas.
Figure: Edema by past filiaria infection on an Ethiopian patient (posterior view).

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