A lipoma is a tumor consisting of adipose tissue. When there is much fibrous tissue in the tumor it is much firmer, and is known as a fibro-lipoma. Brander describes a young native of Manchuria, North China, from whom he removed a fibro-lipoma weighing 50pounds. The growth had progressively enlarged for eleven years, and at the time of extirpation hung as an enormous mass from beneath the left scapula. In operating the tumor had to be swung on a beam. The hemorrhage was slight and the patient was discharged in five days.
The true lipoma must be distinguished from diffuse accumulations of fat in different parts of the body in the same way that fibroma is distinguished from elephantiasis. Circumscribed lipoma appears as a lobulated soft tumor, more or less movable, lying beneath the skin. It sometimes reaches enormous size and assumes the shape of a pendulous tumor.
Diffuse lipoma, occurring in the neck, often gives the patient a grotesque and peculiar appearance. It is generally found in men addicted to the use of alcohol, and occurs between thirty-five and forty-five years of age; in no case has general obesity been described. In one of Madelung's cases a large lobe extended downward over the clavicle. The growth has been found between the larynx and the pharynx. Black reports a remarkable case of fatty tumor in a child one year and five months old which filled the whole abdominal cavity, weighing nine pounds and two ounces.
Chipault mentions a case of lipoma of the parietal region, observed by Rotter. This monstrous growth was three feet three inches long, descending to the knees. It had its origin in the left parietal region, and was covered by the skin of the whole left side of the face and forehead. The left ear was plainly visible in the upper third of the growth.
Chondroma, or enchondroma, is a cartilaginous tumor occurring principally where cartilage is normally found, but sometimes in regions containing no cartilage. Enchondroma may be composed of osteoid tissue, such as is found in the ossifying callous between the bone and the periosteum, and, according to Virchow, then takes the name of osteochondroma. Virchow has divided chondromata into two forms--those which he calls ecchondromata, which grow from cartilage, and those that grow independently from cartilage, or the enchondromata, which latter are in the great majority.
Enchondroma is often found on the long bones, and very frequently upon the bones of the hands or on the metatarsal bones.
Figure 244 represents an enchondroma of the thumb. Multiple enchondromata are most peculiar, and may attain enormous sizes.
Whittaker describes a farmer of forty who exhibited peculiar tumors of the fingers, which he calls multiple osteoecchondromata. His family history was negative. He stated that at an early age he received a stroke of lightning, which rendered him unconscious for some time. He knows of nothing else that could be in possible relation with his present condition.
Nine months after this accident there was noticed an enlargement of the middle joint of the little finger, and about the same time an enlargement on the middle finger. Gradually all the joints of the right hand became involved. The enlargement increased so that at the age of twelve they were of the size of walnuts, and at this time the patient began to notice the same process developing in the left hand. The growths continued to develop, new nodules appearing, until the fingers presented the appearance of nodulated potatoes.
One of the most frequent of the fibro-cartilaginous tumors is the "mixed cartilaginous" tumor of Paget, which grows in the interstitial tissues of the parotid gland, and sometimes attains enormous size. Matas presented the photograph of a negress having an enormous fibroma growing from the left parotid region; and there is a photograph of a similar case in the Mutter Museum of the College of Physicians, Philadelphia.
The hyaline enchondroma is of slow growth, but may at times assume immense proportions, as is shown in the accompanying illustration, given by Warren, of a patient in whom the growth was in the scapula.
In 1824 there is quoted the description of a peculiar growth which, though not definitely described, may be spoken of here. It was an enormous encysted tumor, springing from the clavicle of a Veronese nobleman. Contrary to general expectations it was successfully removed by Portalupi, a surgeon of Venice. It weighed 57 pounds, being 20 1/2 inches long and 30 inches in circumference. It is said this tumor followed the reception of a wound.
Among the benign bone tumors are exostoses--homologous outgrowths differing from hypertrophies, as they only involve a limited part of the circumference. When developmental, originating in childhood, the outgrowths may be found on any part of the skeleton, and upon many and generally symmetric parts at the same time, as is shown in Figure 248.
Barwell had a case of a girl with 38 exostoses. Erichsen mentions a young man of twenty-one with 15 groups of symmetric exostoses in various portions of the body; they were spongy or cancellous in nature.
Hartmann shows two cases of multiple exostoses, both in males, and universally distributed over the body.
Macland of the French navy describes an affection of the bones)of the face known as anakhre or goundron (gros-nez). It is so common that about one per cent of the natives of certain villages on the Ivory Coast, West Africa, are subject to it. As a rule the earliest symptoms in childhood are: more or less persistent headache, particularly frontal, sanguineous and purulent discharge from the nostrils, and the formation of symmetric swellings the size of an almond in the region of the nasal processes of the superior maxilla. The cartilage does not seem to be involved, and, although it is not so stated, the nasal duct appears to remain intact.
