Type-selective muscular degeneration promotes infiltrative growth of intramuscular lipoma

Table 1 Immunohistochemical analysis of intramuscular lipomas.

Case	Age (year)	Gender	Location	Histological type	Atrophic muscle fiber*	Cathepsin-D
1	57	M	sternocleidomastoideus	infiltrative	slow-dominant atrophy	+
2	65	M	rectus femolis	infiltrative	slow-dominant atrophy	+
3	48	M	adductor longus	infiltrative	slow-dominant atrophy	+
4	43	M	vastus medialis	infiltrative	slow-dominant atrophy	+
5	71	M	trapezius	infiltrative	slow-dominant atrophy	+ +
6	64	F	vastus lateralis	infiltrative	fast-dominant atrophy	+ +
7	71	F	tensor fascia lata	infiltrative	fast-dominant atrophy	+
8	37	F	deltoideus	infiltrative	fast-dominant atrophy	+
9	47	F	latissimus dorsi	infiltrative	fast-dominant atrophy	+ +
10	66	F	deltoideus	infiltrative	fast-dominant atrophy	+ +
11	48	F	vastus medialis	infiltrative	non-dominant atrophy	+ +
12	59	F	brachioradialis	infiltrative	non-dominant atrophy	+
13	51	F	vastus medialis	infiltrative	non-dominant atrophy	+
14	43	F	longissimus thoracics	infiltrative	non-dominant atrophy	+ +
15	49	M	sartorius	infiltrative	non-dominant atrophy	+ +
16	15	F	rectus femolis	well-circumscribed	slow-dominant atrophy	+
17	54	F	levator scapulae	well-circumscribed	non-dominant atrophy	+
18	3	M	paravertebral muscle	well-circumscribed	-	-
19	57	F	sartorius	well-circumscribed	-	-
20	43	F	rhomboideus	well-circumscribed	-	-
21	21	F	hypotener	well-circumscribed	-	-
22	51	M	rectus femolis	well-circumscribed	-	-

*: Immunohistochemical evaluation using troponin T and SERCA -: Impossible specimens to evaluate immunohistochemically because of no muscle tissue +: Involving muscle tissues are positive to cathepsin-D. ++: Muscle tissues are stained with cathepsin-D around small fatty vacuoles or nuclear chain.

ISSN: 1471-2474