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Mucous polypus of the nose, which is often described as a myxoma, is merely a pendulous process of œdematous mucous membrane. [Illustration: FIG.

Fibroid tumours of the uterus are described with myoma. Diffuse fibroma or Fibromatosis, analogous to lipomatosis, is met with in the connective tissue of the skin and sheaths of nerves, and constitutes one form of neuro-fibromatosis; a similar change is also met with in the stomach and colon. #Myxoma.# A myxoma is composed of tissue of a soft gelatinous, semifluid consistence.

#Tumours of Tendon Sheaths.# Innocent tumours, such as lipoma, fibroma, and myxoma, are rare. Special mention should be made of the myeloma which is met with at the wrist or ankle as an elongated swelling of slow development, or over the phalanx of a finger as a small rounded swelling.

Seiffert examined a case of this nature in a young man of nineteen, and, contrary to Kopp's supposition, found that in some skin from over the left second rib the elastic fibers were quite normal, but there was transformation of the connective tissue of the dermis into an unformed tissue like a myxoma, with total disappearance of the connective-tissue bundles.

The pure myxoma is extremely rare, and clinically resembles the lipoma. Myxomatous tissue is, however, frequently found in other connective-tissue tumours as a result of degeneration, for example, in cartilaginous tumours and in sarcomas. Myxomatous tissue is also a prominent constituent of the "innocent parotid tumour."

CLASSIFICATION OF TUMOURS: I. Connective-tissue tumours: Innocent: Lipoma, Xanthoma, Chondroma, Osteoma, Odontoma, Fibroma, Myxoma, Endothelioma, etc.; Malignant: Sarcoma II. Epithelial tumours: Innocent: Papilloma, Adenoma, Cystic Adenoma; Malignant: Epithelioma, Glandular Cancer, Rodent Cancer, Melanotic Cancer III. Dermoids IV. Teratoma.

New growths include the fibroma, the myxoma, the myeloma or giant-celled tumour, and various forms of sarcoma. #Diseases of Individual Bursæ.# The olecranon bursa is frequently the seat of pyogenic infection and of traumatic or trade bursitis, the latter being known as "miner's" or "student's elbow." [Illustration: FIG.

We have met with a fibroma in the interior of the lower end of the femur of an adult, causing expansion of the bone with decided increase in girth and liability to pathological fracture; it is possible that this represents the cured stage of osteomyelitis fibrosa. Myxoma, lipoma, and angioma of bone are all rare.