Digestive System.—In the mouth and pharynx the lymphatic elements are very commonly affected when the cervical glands are enlarged, sometimes independently. The tonsils may form large masses, and with the follicles at the root of the tongue and at the pharynx produce great obstruction. Sloughing may occur. In the gullet and stomach secondary tumors have occasionally been seen. In Case VII. there was a flat elevated mass at the cardia beginning to ulcerate.
The small intestines may be extensively involved; the glands of Peyer enlarged and even ulcerated. In Case VII. there were over twenty ulcers in the jejunum and ileum, ranging in size from a split pea to a bean, edges elevated and indurated and the bases sloughing. The large intestines may be secondarily affected, the intertubular adenoid tissue be greatly developed and compress the crypts of Lieberkühn, and lead to thickening of the mucosa.
The liver is often enlarged, and presents scattered lymphoid tumors, rarely larger than a pea, of a white or yellow-white color, and may be readily mistaken for tubercles. They are most common beneath the capsule and in the interlobular tissue. A diffuse interacinous growth may also occur. Cirrhosis has been observed in the vicinity of the growths, and fatty degeneration.
The pancreas may be the seat of secondary masses.
Genito-urinary System.—The kidneys are very often the seat of new growths, usually small and of a character similar to those in the spleen and liver. When the disease is very rapid the tumors may be large and very vascular. The texture of the kidney is usually soft, and parenchymatous change is common. The testicles may also be the seat of adenoid growths; this was the case in one of Hodgkin's patients.
The Respiratory System.—Growths in the trachea are rare. The lungs are frequently affected, either by the direct invasion at the root from the bronchial glands (Case V.), or by numerous scattered nodules through the substance. They develop about the bronchi, and may reach the size of marbles. Intense bronchitis, oedema, and congestion may be secondary changes induced by pressure on the bronchi or trachea.
The serous membranes occasionally present lymphoid growths. Pleural effusion is not uncommon.
The heart presents no very constant changes. When the anæmia is profound it may be very fatty. It may be compressed by mediastinal growths, and has been found much atrophied. Lymphoid growths may occur in it.
The Nervous System.—The brain itself is rarely affected, but growths have been found in the dura mater. In Case VI. a secondary mass compressed the spinal cord, as in Hutchinson's case, producing paraplegia.
The skin may be the seat of adenoid growths, as in Greenfield's case.155 The growing tumors may involve it (Case IV.), and ulceration may occur.