25 Gaz. Méd. Paris, Dec. 10 and 17, 1881; Lond. Med. Record, Mar. 15, 1882, p. 113.
SYMPTOMS, COURSE, DURATION, TERMINATIONS, COMPLICATIONS, AND SEQUELÆ.—The prominent symptom of macroglossia is the enlarged tongue protruding beyond the mouth. The resemblance of the protruding tongue of a child with macroglossia to the tongue hanging from the mouth of a calf gave rise to the name lingua vitulina by which it has sometimes been designated. In some instances, where the enlargement is but moderate, the organ can be retained within the mouth. When bilateral, the enlargement may be symmetrical, or may interest one side of the tongue more than the other. When the enlargement is confined to the free portion of the tongue, it interferes little with respiration and with movements of suction. When occupying the base of the organ, it may seriously embarrass respiration, and even produce suffocation in some instances (Clarke). The mouth being maintained open, saliva dribbles away constantly except during alimentation. Thirst is often very great in consequence of this, and of the desiccation of the tongue and of the walls of the mouth by the unmodified air to which they are continuously exposed. The tongue is usually free from pain.
In some subjects, although the tongue, left to itself, protruded considerably, it has been found quite practicable to maintain it within the cavity of the mouth by means of bandages or other appliances secured to the back and top of the head. These bandages are removed from time to time to give relief from the restraint and to permit food and drink to be taken. Systematic compression, indeed, has been induced in this way in some instances, and has produced considerable diminution in the size of the organ—sufficient to maintain its concealment without the aid of an appliance. When the tongue cannot be retained within the mouth the patient becomes unable to close the jaws. Hence saliva dribbles constantly, save when food or drink is being taken. The protruded portion of the tongue undergoes a livid discoloration, sometimes diffuse, sometimes disseminated. Though sometimes remaining comparatively soft in texture, it usually becomes hard, dry, rough, fissured, ulcerated and sanious, covered with desiccating layers of mucus and epithelium, and marked by indentations made by the edges of the teeth, which sometimes seem almost to strangle it. Mastication, deglutition, and articulation often become very difficult, and respiration also, but less frequently. The lower lip becomes much everted. The larynx and hyoid bone become drawn upward and forward by the weight of the organ. The configuration of the lower jaw undergoes considerable change, and the teeth become pressed out of position. Dislocation of the jaw from this cause has been noticed (Chalk26).
26 Trans. Path. Soc. London, vol. viii. p. 305.
These symptoms undergo aggravation with the growth of the subject, and, while presenting general features of resemblance in all cases, vary considerably in individual instances. Great difficulty is encountered, as a rule, in taking food, and mastication has to be performed very slowly. In some instances mastication can be performed satisfactorily by the molars, owing to a compensatory curvature of the lower jaw, even though the anterior portions of the jaw may remain permanently separated (Harris). Some patients get along by using their fingers to push the bolus far enough back to permit of its deglutition. Some have used a cup with a long tube slightly curved to convey fluids to the back part of the mouth for a similar purpose. Some have been systematically fed by means of a catheter passed through a nasal passage and thus on into the oesophagus. The difficulties in nourishing patients reduce some of them to extreme emaciation.
Notwithstanding all these drawbacks, quite a number of cases are on record where the patients have reached well into adult life before being submitted to radical measures for relief. One patient is recorded as having reached the age of eighty, having worn for some sixty-five years a silver shield to conceal her deformity (Clarke).
PATHOLOGY AND PATHOLOGICAL ANATOMY.—The hypertrophy may involve all the structures of the tongue, but usually implicates the muscular tissue especially (Sédillot, Paget, Bouisson). In a case published by W. Fairlie Clarke it was found on microscopic examination that the papillæ as well as the mucous and submucous tissues were somewhat enlarged and thickened, while the bundles of muscular fibre were slightly coarser than natural. Maas reports a unilateral case of macroglossia in a male child two months of age associated with hyperdevelopment of the entire left side of the body.27 In some instances the blood-vessels and lymphatics are chiefly involved (Virchow, Billroth, Maas), two cases of which have been described by Virchow as cavernous lymphatic tumors.
27 Arch. klin. Chir., p. 413, Bd. xiii. Heft 3.
Hilliard reports28 a congenital case from vicious growth, removed at fourteen months of age. Microscopic sections showed the large lacunæ filled with corpuscles, blood-pigment in different stages of degeneration, and the papillæ much hypertrophied. Winiwarter29 reports a congenital macroglossia associated with congenital cysts of the neck.
28 Brit. Med. Journ., Nov. 26, 1870, p. 591.