Table 2.

Comparison of lobe sum and TT4 medians of 100 cats with thyroid lobe enlargement

Lobe sum	Largest lobe	Number of cats	TT4 range (nmol/l)	Median TT4 (nmol/l)
1	1	34	14.2–37.3	25.7
2	1	6	15.4–30.9	24.5
2	2	23	15.4–42.5	25.7
3	2	8	20.6–46.3	28.3
3	3	5∗	16.7–128.7∗	47.6∗
4	2	3	33.5–61.8	33.5
4	3	2	29.6–46.3	38.6
4	4	5	68.2–100.4	74.6
5	3	1	60.5∗∗	60.5∗∗
5	4	1	99.1∗∗	99.1∗∗
5	5	3	136.4–213.6	139.0
6	4	2	82.4–203.3	142.9
6	6	3	150.6–306.3	208.5
7	4	1	236.8∗∗	236.8∗∗
7	5	1	149.3∗∗	149.3∗∗
8	4	1	158.3∗∗	158.3∗∗
12	6	1	193.0∗∗	193.0∗∗

Note: TT4 reference range = 10.2–51.5 nmol/l.

^∗Includes a cat with an enlarged intrathoracic thyroid lobe and a TT4 of 128.7 nmol/l.

^∗∗TT4 constant (n=1 in each case).